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Research Articles
Effect of irrigation protocols on smear layer removal, bond strength and nanoleakage of fiber posts using a self-adhesive resin cement
Rodrigo Stadler Alessi, Renata Terumi Jitumori, Bruna Fortes Bittencourt, Giovana Mongruel Gomes, João Carlos Gomes
Restor Dent Endod 2023;48(3):e28.   Published online July 27, 2023
DOI: https://doi.org/10.5395/rde.2023.48.e28
AbstractAbstract PDFPubReaderePub
Objectives

This study aimed to investigate the effect of the application method of 2% chlorhexidine (CHX) and its influence on the adhesion of fiberglass posts cemented with a self-adhesive resin cement.

Materials and Methods

Sixty human mandibular premolars were endodontically treated and divided into 5 groups (n = 12), according to the canal irrigant and its application method: 2 groups with conventional syringe irrigation (CSI)—2.5% sodium hypochlorite (NaOCl) (control) and 2% CHX— and 3 groups with 2% CHX irrigation/activation—by passive ultrasonic irrigation (PUI), Easy Clean file, and XP-Endo Finisher file. Two roots per group were evaluated for smear layer (SL) removal by scanning electron microscopy. For other roots, fiber posts were luted using a self-adhesive resin cement. The roots were sectioned into 6 slices for push-out bond strength (BS) (7/group) and nanoleakage (NL) (3/group). Data from SL removal were submitted to Kruskal-Wallis and Student-Newman-Keuls tests (α = 0.05). Data from BS and NL were evaluated by 2-way analysis of variance and Tukey’s test (α = 0.05).

Results

For SL removal and BS, the CHX irrigation/activation promoted better values than CSI with CHX (p < 0.05), but it was not significantly different from CSI with NaOCl (p > 0.05). For NL, the lowest values were obtained by the chlorhexidine irrigation/activation groups (p < 0.05).

Conclusions

Active 2% CHX irrigation can be used to improve the post space cleaning and adhesion before fiber post cementation with self-adhesive resin cements.

Citations

Citations to this article as recorded by  
  • Laser‐Activated Irrigation via Photon‐Induced Photoacoustic Streaming and Shock Wave Enhanced Emission on Smear Layer Removal Efficacy, Pushout Bond Strength, and Sealer Adaptation: A SEM Assessment
    Basil Almutairi, Fahad Alkhudhairy
    Microscopy Research and Technique.2025;[Epub]     CrossRef
  • Evaluation of Microleakage Using Different Luting Cements in Kedo Zirconia Crowns: An In Vitro Assessment
    Guru Vishnu, Ganesh Jeevanandan
    Cureus.2024;[Epub]     CrossRef
  • 379 View
  • 24 Download
  • 2 Web of Science
  • 2 Crossref
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Microleakage and characteristics of resin-tooth tissues interface of a self-etch and an etch-and-rinse adhesive systems
Xuan Vinh Tran, Khanh Quang Tran
Restor Dent Endod 2021;46(2):e30.   Published online May 18, 2021
DOI: https://doi.org/10.5395/rde.2021.46.e30
AbstractAbstract PDFPubReaderePub
Objectives

This study was conducted to compare the microleakage and characteristics of the resin-tooth tissue interface between self-etch and etch-and-rinse adhesive systems after 48 hours and 3 months.

Materials and Methods

40 extracted premolar teeth were randomly divided into 2 groups: 1-step self-etch adhesive system – Optibond™ All-In-One, and 2-step etch-and-rinse adhesive system - Adper™ Single Bond 2. Both groups were subjected to 500 thermocycles (5°C–55°C) before scanning electron microscope (SEM) analysis or microleakage trial at 48-hour and 3-month time periods.

Results

SEM images showed the hybrid layer thickness, diameter, and length of resin tags of the self-etch adhesive (0.42 ± 0.14 µm; 1.49 ± 0.45 µm; 16.35 ± 14.26 µm) were smaller than those of the etch-and-rinse adhesive (4.39 ± 1.52 µm; 3.49 ± 1 µm; 52.81 ± 35.81 µm). In dentin, the microleakage scores of the 2 adhesives were not different in both time periods (48 hours/3 months). However, the microleakage score of etch-and-rinse adhesive increased significantly after 3 months (0.8 ± 0.63 and 1.9 ± 0.88, p < 0.05).

Conclusions

The self-etch adhesive exhibited better long-term sealing ability in dentin when compared to that of the etch-and-rinse adhesive. The greater hybrid layer thickness and dimensions of resin tags did not guarantee reliable, long-lasting sealing in the bonding area.

Citations

Citations to this article as recorded by  
  • Efficacy of different adhesive systems in bonding direct resin composite restorations: a systematic review and meta-analysis
    Ravinder S. Saini, Rajesh Vyas, Sunil Kumar Vaddamanu, Syed Altafuddin Quadri, Seyed Ali Mosaddad, Artak Heboyan
    Evidence-Based Dentistry.2025;[Epub]     CrossRef
  • Resin tags formation by modified Renewal MI formulations in a carious dentine model
    Nabih Alkhouri, Wendy Xia, Paul Ashley, Anne Young
    Frontiers in Oral Health.2024;[Epub]     CrossRef
  • Effect of propolis added to single‐bottle adhesives on water permeation through the hybrid layer
    Lucineide Silva da Rocha, Daniela Ferreira de Oliveira, Cinthya Luna Veloso de Lima, Ticiano Gomes do Nascimento, Johnnatan Duarte de Freitas, Jeniffer Mclaine Duarte de Freitas, Isabel Cristina Celerino de Moraes Porto
    European Journal of Oral Sciences.2024;[Epub]     CrossRef
  • Exploration and preliminary clinical investigation of an adhesive approach for primary tooth restoration
    Xiangqin Xu, Jiansheng Zhu, May Lei Mei, Huaying Wu, Kaipeng Xie, Shoulin Wang, Yaming Chen
    The Journal of Biomedical Research.2023; 37(2): 138.     CrossRef
  • Adhesion to enamel and dentine: an update
    Rana Alkattan
    Primary Dental Journal.2023; 12(3): 33.     CrossRef
  • Effects of carbodiimide combined with ethanol–wet bonding pretreatment on dentin bonding properties: an in vitro study
    Xiaoxiao You, Long Chen, Jie Xu, Sihui Li, Zhenghao Zhang, Ling Guo
    PeerJ.2022; 10: e14238.     CrossRef
  • The effects of amalgam contamination and different surface modifications on microleakage of dentin bonded to bulk fill composite when using different adhesive protocols
    Nojoud Alshehri, Abdullah Aljamhan, Mohammed Bin-Shuwaish
    BMC Oral Health.2022;[Epub]     CrossRef
  • Development of low-shrinkage dental adhesives via blending with spiroorthocarbonate expanding monomer and unsaturated epoxy resin monomer
    Zonghua Wang, Xiaoran Zhang, Shuo Yao, Jiaxin Zhao, Chuanjian Zhou, Junling Wu
    Journal of the Mechanical Behavior of Biomedical Materials.2022; 133: 105308.     CrossRef
  • Influence of silver nanoparticles on the resin-dentin bond strength and antibacterial activity of a self-etch adhesive system
    Jia Wang, Wei Jiang, Jingping Liang, Shujun Ran
    The Journal of Prosthetic Dentistry.2022; 128(6): 1363.e1.     CrossRef
  • 261 View
  • 9 Download
  • 7 Web of Science
  • 9 Crossref
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Interface between calcium silicate cement and adhesive systems according to adhesive families and cement maturation
Nelly Pradelle-Plasse, Caroline Mocquot, Katherine Semennikova, Pierre Colon, Brigitte Grosgogeat
Restor Dent Endod 2021;46(1):e3.   Published online December 9, 2020
DOI: https://doi.org/10.5395/rde.2021.46.e3
AbstractAbstract PDFPubReaderePub
Objectives

This study aimed to evaluate the interface between a calcium silicate cement (CSC), Biodentine and dental adhesives in terms of sealing ability.

Materials and Methods

Microleakage test: 160 standardized class II cavities were prepared on 80 extracted human molars. The cavities were filled with Biodentine and then divided into 2 experimental groups according to the time of restoration: composite resin obturation 15 minutes after Biodentine handling (D0); restoration after 7 days (D7). Each group was then divided into 8 subgroups (n = 5) according to the adhesive system used: etch-and-rinse adhesive (Prime & Bond); self-etch adhesive 2 steps (Optibond XTR and Clearfil SE Bond); self-etch adhesive 1 step (Xeno III, G-aenial Bond, and Clearfil Tri-S Bond); and universal used as etch-and-rinse or self-etch (ScotchBond Universal ER or SE). After thermocycling, the teeth were immersed in a silver nitrate solution, stained, longitudinally sectioned, and the Biodentine/adhesive percolation was quantified. Scanning electron microscopic observations: Biodentine/adhesive interfaces were observed.

Results

A tendency towards less microleakage was observed when Biodentine was etched (2.47%) and when restorations were done without delay (D0: 4.31%, D7: 6.78%), but this was not significant. The adhesives containing 10-methacryloyloxydecyl dihydrogen phosphate monomer showed the most stable results at both times studied. All Biodentine/adhesive interfaces were homogeneous and regular.

Conclusions

The good sealing of the CSC/adhesive interface is not a function of the system adhesive family used or the cement maturation before restoration. Biodentine can be used as a dentine substitute.

Citations

Citations to this article as recorded by  
  • Effect of Er Cr YSGG laser etching procedure on the bond strength of different calcium silicate cements
    Yesim Sesen Uslu, Hakan Yasin Gönder, Pinar Sesen, Gizem Gunduz Bektaş
    Lasers in Dental Science.2024;[Epub]     CrossRef
  • Managing Cracked Teeth with Root Extension: A Prospective Preliminary Study Using Biodentine™ Material
    Kênia Maria Soares de Toubes, Isabella Sousa Corrêa, Regina Célia Lopes Valadares, Stephanie Quadros Tonelli, Fábio Fernandes Borém Bruzinga, Frank Ferreira Silveira, Dr Karthikeyan Ramalingam
    International Journal of Dentistry.2024;[Epub]     CrossRef
  • In Vitro Resistance of Natural Molars vs. Additive-Manufactured Simulators Treated with Pulpotomy and Endocrown
    Marie-Laure Munoz-Sanchez, Alexis Gravier, Olivier Francois, Emmanuel Nicolas, Martine Hennequin, Nicolas Decerle
    Journal of Functional Biomaterials.2023; 14(9): 444.     CrossRef
  • Characterisation of the calcium silicate‐based cement–composite interface and the bonding strength with total‐etch or single/two‐stage self‐etch adhesive systems
    Abidin Talha Mutluay, Merve Mutluay
    Australian Endodontic Journal.2022; 48(3): 501.     CrossRef
  • Bond Strength of Adhesive Systems to Calcium Silicate-Based Materials: A Systematic Review and Meta-Analysis of In Vitro Studies
    Louis Hardan, Davide Mancino, Rim Bourgi, Alejandra Alvarado-Orozco, Laura Emma Rodríguez-Vilchis, Abigailt Flores-Ledesma, Carlos Enrique Cuevas-Suárez, Monika Lukomska-Szymanska, Ammar Eid, Maya-Line Danhache, Maryline Minoux, Youssef Haïkel, Naji Kharo
    Gels.2022; 8(5): 311.     CrossRef
  • 326 View
  • 14 Download
  • 5 Web of Science
  • 5 Crossref
Close layer
Bacterial leakage and micro-computed tomography evaluation in round-shaped canals obturated with bioceramic cone and sealer using matched single cone technique
Kallaya Yanpiset, Danuchit Banomyong, Kanet Chotvorrarak, Ratchapin Laovanitch Srisatjaluk
Restor Dent Endod 2018;43(3):e30.   Published online July 5, 2018
DOI: https://doi.org/10.5395/rde.2018.43.e30
AbstractAbstract PDFPubReaderePub
Objectives

To evaluate sealing ability of root canals obturated with bioceramic-impregnated gutta percha cone (BCC) or gutta percha (GP), with bioceramic sealer (BCS) or AH Plus (AH; Dentsply-Maillefer), in roundly-prepared canals using matched single-cone technique, based on bacterial leakage test, and to analyze obturation quality using micro-computed tomography (CT) analysis.

Materials and Methods

Ninety-two distobuccal roots of maxillary molars were prepared using nickel-titanium files to apical size 40/0.06. The roots were divided into 4 groups (n = 20) that were obturated with a master cone and sealer: GP/AH, BCC/AH, GP/BCS, and BCC/BCS. Bacterial leakage model using Enterococcus faecalis was used to evaluate sealing ability for 60-day period. Obturated samples from each group (n = 4) were analyzed using micro-CT.

Results

All groups showed bacterial leakage at 20%–45% of samples with mean leakage times of 42–52 days. There were no significant differences in bacterial leakage among the groups. Micro-CT showed minimal gaps and voids in all groups at less than 1%.

Conclusions

In roundly-prepared canals, the single cone obturation with BCC/BCS was comparable to GP/AH for bacterial leakage at 60 days.

Citations

Citations to this article as recorded by  
  • In vitro comparative evaluation of apical leakage using a bioceramic sealer with three different obturating techniques: A glucose leakage model
    Tanvi S Agrawal, Shishir Singh, Rajesh S Podar, Gaurav Kulkarni, Anuprita Gadkari, Navin Agarwal
    Journal of Conservative Dentistry and Endodontics.2024; 27(1): 76.     CrossRef
  • In Vitro Microscopical and Microbiological Assessment of the Sealing Ability of Calcium Silicate-Based Root Canal Sealers
    Karin Christine Huth, Sabina Noreen Wuersching, Leander Benz, Stefan Kist, Maximilian Kollmuss
    Journal of Functional Biomaterials.2024; 15(11): 341.     CrossRef
  • Comparison between AH plus sealer and total fill bioceramic sealer performance in previously untreated and retreatment cases of maxillary incisors with large-sized periapical lesion: a randomized controlled trial
    Eisa Wahbi, Hassan Achour, Yasser Alsayed Tolibah
    BDJ Open.2024;[Epub]     CrossRef
  • Bacterial sealing ability of calcium silicate-based sealer for endodontic surgery: an in-vitro study
    Mai M. Mansour, Sybel M. Moussa, Marwa A. Meheissen, Mahmoud R. Aboelseoud
    BMC Oral Health.2024;[Epub]     CrossRef
  • Assessment the bioactivity of zinc oxid eugenol sealer after the addition of different concentrations of nano hydroxyapatite-tyrosine amino acid
    Rasha M. Al-Shamaa, Raghad A. Al-Askary
    Brazilian Journal of Oral Sciences.2024; 23: e243733.     CrossRef
  • Assessment of Bacterial Sealing Ability of Two Different Bio-Ceramic Sealers in Single-Rooted Teeth Using Single Cone Obturation Technique: An In Vitro Study
    Doaa M. AlEraky, Ahmed M. Rahoma, Hatem M. Abuohashish, Abdullh AlQasser, Abbas AlHamali, Hussain M. AlHussain, Hussain M. AlShoalah, Zakrya AlSaghah, Abdulrahman Khattar, Shimaa Rifaat
    Applied Sciences.2023; 13(5): 2906.     CrossRef
  • How do imaging protocols affect the assessment of root-end fillings?
    Fernanda Ferrari Esteves Torres, Reinhilde Jacobs, Mostafa EzEldeen, Karla de Faria-Vasconcelos, Juliane Maria Guerreiro-Tanomaru, Bernardo Camargo dos Santos, Mário Tanomaru-Filho
    Restorative Dentistry & Endodontics.2022;[Epub]     CrossRef
  • The impact of Morse taper implant design on microleakage at implant-healing abutment interface
    Soyeon KIM, Joo Won LEE, Jae-Heon KIM, Van Mai TRUONG, Young-Seok PARK
    Dental Materials Journal.2022; 41(5): 767.     CrossRef
  • A critical analysis of research methods and experimental models to study root canal fillings
    Gustavo De‐Deus, Erick Miranda Souza, Emmanuel João Nogueira Leal Silva, Felipe Gonçalves Belladonna, Marco Simões‐Carvalho, Daniele Moreira Cavalcante, Marco Aurélio Versiani
    International Endodontic Journal.2022; 55(S2): 384.     CrossRef
  • Micro‐CT assessment of gap‐containing areas along the gutta‐percha‐sealer interface in oval‐shaped canals
    Gustavo De‐Deus, Gustavo O. Santos, Iara Zamboni Monteiro, Daniele M. Cavalcante, Marco Simões‐Carvalho, Felipe G. Belladonna, Emmanuel J. N. L. Silva, Erick M. Souza, Raphael Licha, Carla Zogheib, Marco A. Versiani
    International Endodontic Journal.2022; 55(7): 795.     CrossRef
  • Comparison of Sealing Ability of Bioceramic Sealer, AH Plus, and GuttaFlow in Conservatively Prepared Curved Root Canals Obturated with Single-Cone Technique: An In vitro Study
    Shalan Kaul, Ajay Kumar, Bhumika Kamal Badiyani, Laxmi Sukhtankar, M. Madhumitha, Amit Kumar
    Journal of Pharmacy and Bioallied Sciences.2021; 13(Suppl 1): S857.     CrossRef
  • Micro-CT Evaluation of Four Root Canal Obturation Techniques
    Mahmood Reza Kalantar Motamedi, Amin Mortaheb, Maryam Zare Jahromi, Brett E. Gilbert, Marilena Vivona
    Scanning.2021; 2021: 1.     CrossRef
  • Effects of Both Fiber Post/Core Resin Construction System and Root Canal Sealer on the Material Interface in Deep Areas of Root Canal
    Hiroki Miura, Shinji Yoshii, Masataka Fujimoto, Ayako Washio, Takahiko Morotomi, Hiroshi Ikeda, Chiaki Kitamura
    Materials.2021; 14(4): 982.     CrossRef
  • Sealing ability and microbial leakage of root-end filling materials: MTA versus epoxy resin: A systematic review and meta-analysis
    Mario Dioguardi, Mario Alovisi, Diego Sovereto, Giuseppe Troiano, Giancarlo Malagnino, Michele Di Cosola, Angela Pia Cazzolla, Luigi Laino, Lorenzo Lo Muzio
    Heliyon.2021; 7(7): e07494.     CrossRef
  • Development of A Nano-Apatite Based Composite Sealer for Endodontic Root Canal Filling
    Angelica Bertacci, Daniele Moro, Gianfranco Ulian, Giovanni Valdrè
    Journal of Composites Science.2021; 5(1): 30.     CrossRef
  • BIOCERAMIC-BASED ROOT CANAL SEALERS
    L Somolová, Z Zapletalová, M Rosa, B Novotná, I Voborná, Y Morozova
    Česká stomatologie a praktické zubní lékařství.2021; 121(4): 116.     CrossRef
  • Calcium Silicate-Based Root Canal Sealers: A Narrative Review and Clinical Perspectives
    Germain Sfeir, Carla Zogheib, Shanon Patel, Thomas Giraud, Venkateshbabu Nagendrababu, Frédéric Bukiet
    Materials.2021; 14(14): 3965.     CrossRef
  • Physico-Chemical Properties of Calcium-Silicate vs. Resin Based Sealers—A Systematic Review and Meta-Analysis of Laboratory-Based Studies
    Viresh Chopra, Graham Davis, Aylin Baysan
    Materials.2021; 15(1): 229.     CrossRef
  • Comparison of apical sealing ability of bioceramic sealer and epoxy resin-based sealer using the fluid filtration technique and scanning electron microscopy
    Widcha Asawaworarit, Thitapa Pinyosopon, Kanittha Kijsamanmith
    Journal of Dental Sciences.2020; 15(2): 186.     CrossRef
  • Micro-computed tomographic evaluation of a new system for root canal filling using calcium silicate-based root canal sealers
    Mario Tanomaru-Filho, Fernanda Ferrari Esteves Torres, Jader Camilo Pinto, Airton Oliveira Santos-Junior, Karina Ines Medina Carita Tavares, Juliane Maria Guerreiro-Tanomaru
    Restorative Dentistry & Endodontics.2020;[Epub]     CrossRef
  • A micro-computed tomographic evaluation of root canal filling with a single gutta-percha cone and calcium silicate sealer
    Jong Cheon Kim, Maung Maung Kyaw Moe, Sung Kyo Kim
    Restorative Dentistry & Endodontics.2020;[Epub]     CrossRef
  • Comparative evaluation of sealing ability of gutta percha and resilon as root canal filling materials- a systematic review
    Pragya Pandey, Himanshi Aggarwal, A.P. Tikku, Arpit Singh, Rhythm Bains, Shambhavi Mishra
    Journal of Oral Biology and Craniofacial Research.2020; 10(2): 220.     CrossRef
  • Micro-computed tomographic evaluation of the flow and filling ability of endodontic materials using different test models
    Fernanda Ferrari Esteves Torres, Juliane Maria Guerreiro-Tanomaru, Gisselle Moraima Chavez-Andrade, Jader Camilo Pinto, Fábio Luiz Camargo Villela Berbert, Mario Tanomaru-Filho
    Restorative Dentistry & Endodontics.2020;[Epub]     CrossRef
  • Root fillings with a matched-taper single cone and two calcium silicate–based sealers: an analysis of voids using micro-computed tomography
    Eugenio Pedullà, Roula S. Abiad, Gianluca Conte, Giusy R. M. La Rosa, Ernesto Rapisarda, Prasanna Neelakantan
    Clinical Oral Investigations.2020; 24(12): 4487.     CrossRef
  • Influence of different disinfection protocols on gutta-percha cones surface roughness assessed by two different methods
    A.M. Nunes, J.P. Gouvea, L. da Silva
    Journal of Materials Research and Technology.2019; 8(6): 5464.     CrossRef
  • Endodontic sealers based on calcium silicates: a systematic review
    David Donnermeyer, Sebastian Bürklein, Till Dammaschke, Edgar Schäfer
    Odontology.2019; 107(4): 421.     CrossRef
  • 279 View
  • 7 Download
  • 26 Crossref
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In vitro evaluation of a newly produced resin-based endodontic sealer
Yoo-Seok Song, Yoorina Choi, Myung-Jin Lim, Mi-Kyung Yu, Chan-Ui Hong, Kwang-Won Lee, Kyung-San Min
Restor Dent Endod 2016;41(3):189-195.   Published online July 26, 2016
DOI: https://doi.org/10.5395/rde.2016.41.3.189
AbstractAbstract PDFPubReaderePub
Objectives

A variety of root canal sealers were recently launched to the market. This study evaluated physicochemical properties, biocompatibility, and sealing ability of a newly launched resin-based sealer (Dia-Proseal, Diadent) compared to the existing root canal sealers (AHplus, Dentsply DeTrey and ADseal, Metabiomed).

Materials and Methods

The physicochemical properties of the tested sealers including pH, solubility, dimensional change, and radiopacity were evaluated. Biocompatibility was measured using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. For microleakage test, single-rooted teeth were instrumented, and obturated with gutta-percha and one of the sealers (n = 10). After immersion in 1% methylene blue solution for 2 weeks, the specimens were split longitudinally. Then, the maximum length of staining was measured. Statistical analysis was performed by one-way analysis of variance followed by Tukey test (p = 0.05).

Results

Dia-Proseal showed the highest pH value among the tested sealers (p < 0.05). ADseal showed higher dimensional change compared to AHplus and Dia-Proseal (p < 0.05). The solubility values of AHplus and Dia-Proseal were similar, whereas ADseal had the lowest solubility value (p < 0.05). The flow values of sealer in increasing order were AHplus, DiaProseal, and ADseal (p < 0.05). The radiopacity of AHplus was higher than those of ADseal and Dia-Proseal (p < 0.05). The cell viability of the tested materials was statistically similar throughout the experimental period. There were no significant differences in microleakage values among the tested samples.

Conclusions

The present study indicates that Dia-Proseal has acceptable physicochemical properties, biocompatibility, and sealing ability.

Citations

Citations to this article as recorded by  
  • Stereomicroscopic evaluation of sealing ability of four different root canal sealers: an in-vitro study
    Sonam Sah, Panna Mangat, Ajay Kumar, Neha Sah, Ganiga Channaiah Shivakumar, Marco Di Blasio, Gabriele Cervino, Giuseppe Minervini
    BMC Oral Health.2024;[Epub]     CrossRef
  • Physicochemical properties of AH plus bioceramic sealer, Bio-C Sealer, and ADseal root canal sealer
    Tamer M. Hamdy, Manar M. Galal, Amira Galal Ismail, Shehabeldin Saber
    Head & Face Medicine.2024;[Epub]     CrossRef
  • Biological investigation of resinous endodontic sealers containing calcium hydroxide
    Carlos Roberto Emerenciano Bueno, Francine Benetti, Marina Tolomei Sandoval Cury, Ana Maria Veiga Vasques, Leopoldo Cosme-Silva, Índia Olinta de Azevedo Queiroz, Ana Cláudia Rodrigues da Silva, Rogério de Castilho Jacinto, Luciano Tavares Angelo Cintra, E
    PLOS ONE.2023; 18(7): e0287890.     CrossRef
  • Comparison of the apical seal obtained by Adseal, Proseal, and AH26 sealers in root canal obturation with lateral compaction technique
    Akam Saeidi, Romina Hajipour, Elham Mahmoudi, Farideh Feizi, Soraya Khafri
    Dental Research Journal.2023;[Epub]     CrossRef
  • Evaluation of Cytotoxicity of Calcium Silicate-based Mineral Trioxide Aggregate Sealers: A Systematic Review of In Vitro Studies
    Nezar Boreak, Mazen Ahmed Qadi, Faisal Hadi Khormi, Luay Mutaen Faqiri, Sadeem Omar Zaylai, Yaser Ali Jad, Bassam Ali Hamdi, Asayil Juraybi
    The Journal of Contemporary Dental Practice.2023; 24(8): 610.     CrossRef
  • Comparative evaluation of push-out bond strength of bioceramic and epoxy sealers after using various final irrigants: An in vitro study
    Chandrasekhar Veeramachaneni, Swathi Aravelli, Sreeja Dundigalla
    Journal of Conservative Dentistry.2022; 25(2): 145.     CrossRef
  • Comparative Evaluation of Root Reinforcement Using MTA-based, Epoxy Resin-based, and Silicone-based Endodontic Sealers in Canals Instrumented with Single-file Rotary System: An In Vitro Study
    Reshma Rajasekhar, Varsha Maria Sebastian, Farhat Nasreen, Pramod Junjanna, Azeem Hassan, Venkidesh Hari Maratt
    The Journal of Contemporary Dental Practice.2022; 22(10): 1098.     CrossRef
  • The Short-Term Antibacterial Activity of Three Selected Endodontic Sealers against Enterococcus faecalis Bacterial Culture
    Matej Rosa, Yuliya Morozova, Roman Moštěk, Pavel Holík, Lucia Somolová, Barbora Novotná, Soňa Zábojníková, Kateřina Bogdanová, Kateřina Langová, Iva Voborná, Lenka Pospíšilová, Josef Paul Kovařík
    Life.2022; 12(2): 158.     CrossRef
  • Antimicrobial potential of AH Plus supplemented with bismuth lipophilic nanoparticles on E. faecalis isolated from clinical isolates
    Jesús Alejandro Torres-Betancourt, Rene Hernandez-Delgadillo, Jorge Jaime Flores-Treviño, Juan Manuel Solís-Soto, Nayely Pineda-Aguilar, Maria Argelia Akemi Nakagoshi-Cepeda, Rosa Isela Sánchez-Nájera, Shankararaman Chellam, Claudio Cabral-Romero
    Journal of Applied Biomaterials & Functional Materials.2022;[Epub]     CrossRef
  • A micro-computed tomographic study using a novel test model to assess the filling ability and volumetric changes of bioceramic root repair materials
    Fernanda Ferrari Esteves Torres, Jader Camilo Pinto, Gabriella Oliveira Figueira, Juliane Maria Guerreiro-Tanomaru, Mario Tanomaru-Filho
    Restorative Dentistry & Endodontics.2021;[Epub]     CrossRef
  • Energy-Dispersive X-Ray Spectrometry Analysis and Radiopacity of Five Different Root Canal Sealers
    Gözde Kandemir Demirci, Mehmet Emin Kaval, Seniha Miçooğulları Kurt, Burcu Serefoglu, Pelin Güneri, Michael Hülsmann, Mehmet Kemal Caliskan
    Brazilian Dental Journal.2021; 32(5): 1.     CrossRef
  • Ultrasonic vibration and thermo‐hydrodynamic technique for filling root canals: Technical overview and a case series
    Yong‐Sik Cho
    International Endodontic Journal.2021; 54(9): 1668.     CrossRef
  • Physicochemical Properties of Two Generations of MTA-Based Root Canal Sealers
    Sawsan Abu Zeid, Hadeel Yaseen Edrees, Abeer Abdulaziz Mokeem Saleh, Osama S. Alothmani
    Materials.2021; 14(20): 5911.     CrossRef
  • Micro-computed tomographic evaluation of a new system for root canal filling using calcium silicate-based root canal sealers
    Mario Tanomaru-Filho, Fernanda Ferrari Esteves Torres, Jader Camilo Pinto, Airton Oliveira Santos-Junior, Karina Ines Medina Carita Tavares, Juliane Maria Guerreiro-Tanomaru
    Restorative Dentistry & Endodontics.2020;[Epub]     CrossRef
  • Radiopacity of endodontic materials using two models for conversion to millimeters of aluminum
    Victor Manuel OCHOA-RODRÍGUEZ, Jorge Homero WILCHES-VISBAL, Barbara ROMA, Hernán COAGUILA-LLERENA, Mário TANOMARU-FILHO, Andréa GONÇALVES, Rubens SPIN-NETO, Gisele FARIA
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Close layer
Marginal microleakage of cervical composite resin restorations bonded using etch-and-rinse and self-etch adhesives: two dimensional vs. three dimensional methods
Maryam Khoroushi, Ailin Ehteshami
Restor Dent Endod 2016;41(2):83-90.   Published online April 18, 2016
DOI: https://doi.org/10.5395/rde.2016.41.2.83
AbstractAbstract PDFPubReaderePub
Objectives

This study was evaluated the marginal microleakage of two different adhesive systems before and after aging with two different dye penetration techniques.

Materials and Methods

Class V cavities were prepared on the buccal and lingual surfaces of 48 human molars. Clearfil SE Bond and Single Bond (self-etching and etch-and-rinse systems, respectively) were applied, each to half of the prepared cavities, which were restored with composite resin. Half of the specimens in each group underwent 10,000 cycles of thermocycling. Microleakage was evaluated using two dimensional (2D) and three dimensional (3D) dye penetration techniques separately for each half of each specimen. Data were analyzed with SPSS 11.5 (SPSS Inc.), using the Kruskal-Wallis and Mann-Whitney U tests (α = 0.05).

Results

The difference between the 2D and 3D microleakage evaluation techniques was significant at the occlusal margins of Single bond groups (p = 0.002). The differences between 2D and 3D microleakage evaluation techniques were significant at both the occlusal and cervical margins of Clearfil SE Bond groups (p = 0.017 and p = 0.002, respectively). The difference between the 2D and 3D techniques was significant at the occlusal margins of non-aged groups (p = 0.003). The difference between these two techniques was significant at the occlusal margins of the aged groups (p = 0.001). The Mann-Whitney test showed significant differences between the two techniques only at the occlusal margins in all specimens.

Conclusions

Under the limitations of the present study, it can be concluded that the 3D technique has the capacity to detect occlusal microleakage more precisely than the 2D technique.

Citations

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Review Article
Current perspectives of bio-ceramic technology in endodontics: calcium enriched mixture cement - review of its composition, properties and applications
Shivani Utneja, Ruchika Roongta Nawal, Sangeeta Talwar, Mahesh Verma
Restor Dent Endod 2015;40(1):1-13.   Published online November 3, 2014
DOI: https://doi.org/10.5395/rde.2015.40.1.1
AbstractAbstract PDFPubReaderePub

Advancements in bio-ceramic technology has revolutionised endodontic material science by enhancing the treatment outcome for patients. This class of dental materials conciliates excellent biocompatibility with high osseoconductivity that render them ideal for endodontic care. Few recently introduced bio-ceramic materials have shown considerable clinical success over their early generations in terms of good handling characteristics. Calcium enriched mixture (CEM) cement, Endosequence sealer, and root repair materials, Biodentine and BioAggregate are the new classes of bio-ceramic materials. The aim of this literature review is to present investigations regarding properties and applications of CEM cement in endodontics. A review of the existing literature was performed by using electronic and hand searching methods for CEM cement from January 2006 to December 2013. CEM cement has a different chemical composition from that of mineral trioxide aggregate (MTA) but has similar clinical applications. It combines the biocompatibility of MTA with more efficient characteristics, such as significantly shorter setting time, good handling characteristics, no staining of tooth and effective seal against bacterial leakage.

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    Alaa E. Dawood, Peter Parashos, Rebecca H.K. Wong, Eric C. Reynolds, David J. Manton
    Journal of Investigative and Clinical Dentistry.2017;[Epub]     CrossRef
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    M. Collado‐González, D. García‐Bernal, R. E. Oñate‐Sánchez, P. S. Ortolani‐Seltenerich, A. Lozano, L. Forner, C. Llena, F. J. Rodríguez‐Lozano
    International Endodontic Journal.2017; 50(9): 875.     CrossRef
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    M. Collado‐González, D. García‐Bernal, R. E. Oñate‐Sánchez, P. S. Ortolani‐Seltenerich, T. Álvarez‐Muro, A. Lozano, L. Forner, C. Llena, J. M. Moraleda, F. J. Rodríguez‐Lozano
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    Eshagh A. Saberi, Narges Farhadmollashahi, Faroogh Ghotbi, Hamed Karkeabadi, Roholla Havaei
    Journal of Dental Research, Dental Clinics, Dental Prospects.2016; 10(2): 75.     CrossRef
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    Frangis Nikfarjam, Kim Beyer, Anke König, Matthias Hofmann, Manuel Butting, Eva Valesky, Stefan Kippenberger, Roland Kaufmann, Detlef Heidemann, August Bernd, Nadja Nicole Zöller, Dimitrios Karamichos
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    R. M. Baratt
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    So-Youn An, Jin-Kyoung Kim, Youn-Soo Shim
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Research Articles
Effect of 38% carbamide peroxide on the microleakage of silorane-based versus methacrylate-based composite restorations
Sedighe Sadat Hashemi Kamangar, Maryam Ghavam, Nazanin Mahinfar, Seyed Jalal Pourhashemi
Restor Dent Endod 2014;39(3):172-179.   Published online May 13, 2014
DOI: https://doi.org/10.5395/rde.2014.39.3.172
AbstractAbstract PDFPubReaderePub
Objectives

This study aimed to assess the effect of 38% carbamide peroxide on the microleakage of class V cavities restored with either a silorane-based composite or two methacrylate-based composites.

Materials and Methods

A total of 96 class V cavities were prepared on the buccal surface of extracted human teeth with both enamel and dentin margins and were randomly assigned into three groups of Filtek P90 (3M-ESPE) + P90 system adhesive (3M-ESPE)(group A), Filtek Z250 (3M-ESPE) + Adper Prompt L-Pop (3M-ESPE)(group B) and Filtek Z350XT (3M-ESPE) + Adper Prompt L-Pop (group C). Half of the teeth were randomly underwent bleaching (38% carbamide peroxide, Day White, Discus Dental, applying for 15 min, twice a day for 14 day) while the remaining half (control) were not bleached. Dye penetration was measured following immersion in basic fuchsine. Data were statistically analyzed using Kruskal-Wallis and Mann-Whitney U tests at a level of 0.05.

Results

No significant differences were found between composites in the control groups in enamel (p = 0.171) or dentin (p = 0.094) margins. After bleaching, microleakage of Z250 (in enamel [p = 0.867] or dentin [p = 0.590] margins) and Z350 (in enamel [p = 0.445] or dentin [p = 0.591] margins) did not change significantly, but the microleakage of P90 significantly increased in both enamel (p = 0.042) and dentin (p = 0.002) margins.

Conclusions

No significant differences were noted between the bleached and control subgroups of two methacrylate-based composites in enamel or dentin margins. Microleakage of silorane-based composite significantly increased after bleaching.

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Micro-CT evaluation of internal adaptation in resin fillings with different dentin adhesives
Seung-Hoon Han, Sung-Ho Park
Restor Dent Endod 2014;39(1):24-31.   Published online January 20, 2014
DOI: https://doi.org/10.5395/rde.2014.39.1.24
AbstractAbstract PDFPubReaderePub
Objectives

The purpose of present study was to evaluate the internal adaptation of composite restorations using different adhesive systems.

Materials and Methods

Typical class I cavities were prepared in 32 human third molars. The teeth were divided into the following four groups: 3-step etch-and-rinse, 2-step etch-and-rinse, 2-step self-etch and 1-step self-etch system were used. After the dentin adhesives were applied, composite resins were filled and light-cured in two layers. Then, silver nitrate solution was infiltrated, and all of the samples were scanned by micro-CT before and after thermo-mechanical load cycling. For each image, the length to which silver nitrate infiltrated, as a percentage of the whole pulpal floor length, was calculated (%SP). To evaluate the internal adaptation using conventional method, the samples were cut into 3 pieces by two sectioning at an interval of 1 mm in the middle of the cavity and they were dyed with Rhodamine-B. The cross sections of the specimens were examined by stereomicroscope. The lengths of the parts where actual leakage was shown were measured and calculated as a percentage of real leakage (%RP). The values for %SP and %RP were compared.

Results

After thermo-mechanical loading, all specimens showed significantly increased %SP compared to before thermo-mechanical loading and 1-step self-etch system had the highest %SP (p < 0.05). There was a tendency for %SP and %RP to show similar microleakage percentage depending on its sectioning.

Conclusions

After thermo-mechanical load cycling, there were differences in internal adaptation among the groups using different adhesive systems.

Citations

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  • Non-Destructive In Vitro Evaluation of an Internal Adaptation of Recent Pulp-Capping Materials in Permanent Teeth Using OCT and Micro-CT
    Ahmed Y. Alzahrani, Amani A. Al Tuwirqi, Nada O. Bamashmous, Turki A. Bakhsh, Eman A. El Ashiry
    Children.2023; 10(8): 1318.     CrossRef
  • Internal Adaptation of Cusp-weakened Class I Preparations Restored with Bulk-fill, Bi-layered, and Incremental Restorative Techniques: A Micro-CT Analysis
    DH Floriani, RN Rached, SA Ignácio, EM Souza
    Operative Dentistry.2022; 47(5): 527.     CrossRef
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    Priyanka Angadala, Jyothi Mandava, Ravichandra Ravi, KoteswarRao Hanumanthu, Prasanthi Penmatsa, Hema Pulidindi
    Dental Research Journal.2022; 19(1): 56.     CrossRef
  • Tomographic Evaluation of the Internal Adaptation for Recent Calcium Silicate‐Based Pulp Capping Materials in Primary Teeth
    A. A. Al Tuwirqi, E. A. El Ashiry, A. Y. Alzahrani, N. Bamashmous, T. A. Bakhsh, Iole Vozza
    BioMed Research International.2021;[Epub]     CrossRef
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    Mehrsima Ghavami-Lahiji, Reza Tayefeh Davalloo, Gelareh Tajziehchi, Paria Shams
    Imaging Science in Dentistry.2021; 51(4): 341.     CrossRef
  • Validation of a method of quantifying 3D leakage in dental restorations
    Fabio A.P. Rizzante, Rana A.F. Sedky, Adilson Y. Furuse, Sorin Teich, Sérgio K. Ishikiriama, Gustavo Mendonça
    The Journal of Prosthetic Dentistry.2020; 123(6): 839.     CrossRef
  • Comparison of micro-CT and conventional dye penetration for microleakage assessment after different aging conditions
    Rayssa Ferreira Zanatta, Annette Wiegand, Christian Dullin, Alessandra Bühler Borges, Carlos Rocha Gomes Torres, Marta Rizk
    International Journal of Adhesion and Adhesives.2019; 89: 161.     CrossRef
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    FS Alqudaihi, NB Cook, KE Diefenderfer, MC Bottino, JA Platt
    Operative Dentistry.2019; 44(1): E32.     CrossRef
  • Effects of occlusal cavity configuration on 3D shrinkage vectors in a flowable composite
    Dalia Kaisarly, Moataz El Gezawi, Guangyun Lai, Jian Jin, Peter Rösch, Karl-Heinz Kunzelmann
    Clinical Oral Investigations.2018; 22(5): 2047.     CrossRef
  • Bonding Strategies of Resin Cement to Er, Cr:YSGG Lased Dentin: Micro-CT Evaluation and Microshear Bond Strength Testing
    Gökçe Meriç, Simge Taşar, Kaan Orhan
    The International Journal of Artificial Organs.2016; 39(2): 72.     CrossRef
  • Calcium hypochlorite as a dentin deproteinization agent: Microleakage, scanning electron microscopy and elemental analysis
    Michele Bortoluzzi de Conto Ferreira, Bruno Carlini Júnior, Daniel Galafassi, Delton Luiz Gobbi
    Microscopy Research and Technique.2015; 78(8): 676.     CrossRef
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Effect of different air-drying time on the microleakage of single-step self-etch adhesives
Horieh Moosavi, Maryam Forghani, Esmatsadat Managhebi
Restor Dent Endod 2013;38(2):73-78.   Published online May 28, 2013
DOI: https://doi.org/10.5395/rde.2013.38.2.73
AbstractAbstract PDFPubReaderePub
Objectives

This study evaluated the effect of three different air-drying times on microleakage of three self-etch adhesive systems.

Materials and Methods

Class I cavities were prepared for 108 extracted sound human premolars. The teeth were divided into three main groups based on three different adhesives: Opti Bond All in One (OBAO), Clearfil S3 Bond (CSB), Bond Force (BF). Each main group divided into three subgroups regarding the air-drying time: without application of air stream, following the manufacturer's instruction, for 10 sec more than manufacturer's instruction. After completion of restorations, specimens were thermocycled and then connected to a fluid filtration system to evaluate microleakage. The data were statistically analyzed using two-way ANOVA and Tukey-test (α = 0.05).

Results

The microleakage of all adhesives decreased when the air-drying time increased from 0 sec to manufacturer's instruction (p < 0.001). The microleakage of BF reached its lowest values after increasing the drying time to 10 sec more than the manufacturer's instruction (p < 0.001). Microleakage of OBAO and CSB was significantly lower compared to BF in all three drying time (p < 0.001).

Conclusions

Increasing in air-drying time of adhesive layer in one-step self-etch adhesives caused reduction of microleakage, but the amount of this reduction may be dependent on the adhesive components of self-etch adhesives.

Citations

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    Hailin Zheng, Júlia Csemezová, Marcel Loomans, Shalika Walker, Florent Gauvin, Wim Zeiler
    Science of The Total Environment.2024; 918: 170734.     CrossRef
  • Development of Drying Process for Removal of Residual Moisture from Biomass Pretreated with Ethanol and Its Kinetic and Thermodynamic Analysis
    Seo-Young Park, Jin-Hyun Kim
    Biotechnology and Bioprocess Engineering.2021; 26(5): 814.     CrossRef
  • Effect of 9.3 μm CO2 and 2.94 μm Er:YAG Laser vs. Bur Preparations on Marginal Adaptation in Enamel and Dentin of Mixed Class V Cavities Restored With Different Restorative Systems
    Clara Isabel Anton y Otero, Enrico Di Bella, Ivo Krejci, Tissiana Bortolotto
    Frontiers in Dental Medicine.2021;[Epub]     CrossRef
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    Tae-Hun Yoon, Jin-Hyun Kim
    Biotechnology and Bioprocess Engineering.2020; 25(5): 777.     CrossRef
  • Effect of adhesive air-drying time on bond strength to dentin: A systematic review and meta-analysis
    Mohamed M. Awad, Ali Alrahlah, Jukka P. Matinlinna, Hamdi Hosni Hamama
    International Journal of Adhesion and Adhesives.2019; 90: 154.     CrossRef
  • Optical Evaluation of Enamel Microleakage with One-Step Self-Etch Adhesives
    Alaa Turkistani, Maha Almutairi, Nouf Banakhar, Reem Rubehan, Sulafa Mugharbil, Ahmed Jamleh, Adnan Nasir, Turki Bakhsh
    Photomedicine and Laser Surgery.2018; 36(11): 589.     CrossRef
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    Chung-Gi Lee, Jin-Hyun Kim
    Process Biochemistry.2015; 50(6): 1031.     CrossRef
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Effective application duration of sodium ascorbate antioxidant in reducing microleakage of bonded composite restoration in intracoronally-bleached teeth
Jae-Young Park, Tae-Yub Kwon, Young-Kyung Kim
Restor Dent Endod 2013;38(1):43-47.   Published online February 26, 2013
DOI: https://doi.org/10.5395/rde.2013.38.1.43
AbstractAbstract PDFPubReaderePub
Objectives

The aim of this study was to determine an appropriate application duration of sodium ascorbate (SA) antioxidant gel in reducing microleakage of bonded composite restoration in intracoronally-bleached teeth.

Materials and Methods

Eighty endodontically-treated human incisors were randomly divided into eight groups: control, no bleaching; IB and DB, immediate and delayed bonding after bleaching, respectively; S10m, S60m, S24h, S3d and S7d, bleaching + SA gel for 10 min, 60 min, 24 hr, 3 day and 7 day, respectively. For bleaching, a mixture of 30% hydrogen peroxide and sodium perborate was applied for 7 day. All access cavities were restored using One-Step adhesive (Bisco Inc.) and then Aelite LS Packable composite (Bisco Inc.). The bonded specimens were subjected to 500 thermal cycles, immersed in 1% methylene blue for 8 hr, and longitudinally sectioned. Microleakage was assessed with a 0 - 4 scoring system and analyzed using nonparametric statistical methods (α = 0.05).

Results

Group IB showed a significantly higher microleakge than the control group (p = 0.006) and group DB a statistically similar score to the control group (p > 0.999). Although groups S10m, S60m, and S24h exhibited significantly higher scores than group DB (p < 0.05), the microleakage in groups S3d and S7d was statistically similar to that in group DB (p = 0.771, p > 0.999).

Conclusions

Application of SA gel for 3 day after nonvital bleaching was effective in reducing microleakage of composite restoration in intracoronally-bleached teeth.

Citations

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  • Effect of Herbal Antioxidant on Push-out Bond Strength of Resin-based Composite to Dentin after Intracoronal Bleaching: An In Vitro Study
    Parinitha MS, Akshay G, Vidya G. Doddawad, Ashwini Tumkur Shivakumar, Sowmya Halasabalu Kalgeri
    Journal of Pharmacology and Pharmacotherapeutics.2024;[Epub]     CrossRef
  • Photon-Induced Photoacoustic Streaming Activation of the Postbleaching Antioxidant Application Rapidly Improves Bonding to Pulp Chamber Dentin
    Nasibe Aycan Yilmaz, Hicran Dönmez Özkan
    Photobiomodulation, Photomedicine, and Laser Surgery.2021; 39(4): 289.     CrossRef
  • Hypericum perforatum L.: A Potent Antioxidant Source for the Treatment of Oxidized Dentin: An Experimental In Vitro Study
    Nasibe Aycan Yilmaz, Rukiye Yavaser, Arife Alev Karagozler
    Journal of Advanced Oral Research.2021; 12(1): 57.     CrossRef
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    Muhammet Karadas, Sezer Demirbuga
    Microscopy Research and Technique.2019; 82(10): 1720.     CrossRef
  • Composite resin shear bond strength on bleached dentin increased by 35% sodium ascorbate application
    Tunjung Nugraheni, N Nuryono, Siti Sunarintyas, Ema Mulyawati
    Dental Journal (Majalah Kedokteran Gigi).2017; 50(4): 178.     CrossRef
  • Antioxidant therapy enhances pulpal healing in bleached teeth
    Adriano Fonseca Lima, Marcelo Rocha Marques, Diana Gabriela Soares, Josimeri Hebling, Giselle Maria Marchi, Carlos Alberto de Souza Costa
    Restorative Dentistry & Endodontics.2016; 41(1): 44.     CrossRef
  • Influence of Ethanol Pretreatment on the Bonding of Resin Composite to Bleached Dentin
    Ga-Eun Son, Tae-Yub Kwon, Young Kyung Kim
    Korean Journal of Dental Materials.2015; 42(4): 279.     CrossRef
  • Effect of 35% Sodium Ascorbate Treatment on Microtensile Bond Strength after Nonvital Bleaching
    Jason R. Hansen, Kenneth J. Frick, Mary P. Walker
    Journal of Endodontics.2014; 40(10): 1668.     CrossRef
  • Pull-out bond strength of a self-adhesive resin cement to NaOCl-treated root dentin: effect of antioxidizing agents
    Maryam Khoroushi, Marzieh Kachuei
    Restorative Dentistry & Endodontics.2014; 39(2): 95.     CrossRef
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Coronal microleakage of four temporary restorative materials in Class II-type endodontic access preparations
Sang-Mi Yun, Lorena Karanxha, Hee-Jin Kim, Sung-Ho Jung, Su-Jung Park, Kyung-San Min
Restor Dent Endod 2012;37(1):29-33.   Published online March 2, 2012
DOI: https://doi.org/10.5395/rde.2012.37.1.29
AbstractAbstract PDFPubReaderePub
Objectives

The purpose of this study was to evaluate the microleakage of 4 temporary materials in teeth with Class II-type endodontic access preparations by using a glucose penetration model.

Materials and Methods

Glucose reaction test was performed to rule out the presence of any reaction between glucose and temporary material. Class II-type endodontic access preparations were made in extracted human premolars with a single root (n = 10). Each experimental group was restored with Caviton (GC), Spacer (Vericom), IRM (Dentsply-Caulk), or Fuji II(GC). Microleakage of four materials used as temporary restorative materials was evaluated by using a glucose penetration model. Data were analyzed by the one-way analysis of variance followed by a multiple-comparison Tukey test. The interface between materials and tooth were examined under a scanning electron microscope (SEM).

Results

There was no significant reaction between glucose and temporary materials used in this study. Microleakage was significantly lower for Caviton and Spacer than for Fuji II and IRM. SEM observation showed more intimate adaptation of tooth-restoration interfaces in Caviton and Spacer than in IRM and Fuji II.

Conclusions

Compared to IRM and Fuji II, Caviton and Spacer can be considered better temporary sealing materials in Class II-type endodontic access cavities.

Citations

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  • Comparative Evaluation of Sealing Ability, Water Absorption, and Solubility of Three Temporary Restorative Materials: An in vitro Study
    AR Prabhakar, N Shantha Rani
    International Journal of Clinical Pediatric Dentistry.2017; 10(2): 136.     CrossRef
  • Sealing Ability of Three Different Materials Used as Retrograde Filling
    Ji-Hoon Park, Seung-Bok Kang, Yong-Hoon Choi, Ji-Hyun Bae
    Journal of Korean Dental Science.2012; 5(2): 60.     CrossRef
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Basic Researchs
The effects of total-etch, wet-bonding, and light-curing of adhesive on the apical seal of a resin-based root canal filling system
Won-Il Ryu, Won-Jun Shon, Seung-Ho Baek, In-Han Lee, Byeong-Hoon Cho
J Korean Acad Conserv Dent 2011;36(5):385-396.   Published online September 30, 2011
DOI: https://doi.org/10.5395/JKACD.2011.36.5.385
AbstractAbstract PDFPubReaderePub
Objectives

This study evaluated the effects of adhesion variables such as the priming concepts of canal wall and the curing modes of adhesives on the sealing ability of a resin-based root canal filling system.

Materials and Methods

Apical microleakage of the Resilon-RealSeal systems filled with 3 different combinations of adhesion variables was compared with the conventional gutta-percha filling using a dye penetration method. Experimental groups were SEDC, Resilon (Resilon Research LLC) filling with self-etch RealSeal (SybronEndo) primer and dual-cure RealSeal sealer; NELC, Resilon filling with no etching, Scotchbond Multi-Purpose (3M ESPE) primer application and light-curing adhesive; and TELC, Resilon filling with Scotchbond Multi-Purpose primer and adhesive used under total etch / wet bonding and light-cure protocols. GPCS, gutta-percha filling with conventional AH26 plus sealer, was the control group.

Results

The median longitudinal dye penetration length of TELC was significantly shorter than those of GPCS and SEDC (Kruskal-Wallis test, p < 0.05). In the cross-sectional microleakage scores, TELC showed significant differences from other groups at 2 to 5 mm from the apical foramen (Kruskal-Wallis test, p < 0.05).

Conclusions

When a resin-based root canal filling material was used, compared to the self-etching primer and the dual-cure sealer, the total etch/wet-bonding with primer and light-curing of adhesive showed improved apical sealing and was highly recommended.

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Influence of rebonding procedures on microleakage of composite resin restorations
Mi-Ae Lee, Duck-Kyu Seo, Ho-Hyun Son, Byeong-Hoon Cho
J Korean Acad Conserv Dent 2010;35(3):164-172.   Published online May 31, 2010
DOI: https://doi.org/10.5395/JKACD.2010.35.3.164
AbstractAbstract PDFPubReaderePub

During a composite resin restoration, an anticipating contraction gap is usually tried to seal with low-viscosity resin after successive polishing, etching, rinsing and drying steps, which as a whole is called rebonding procedure. However, the gap might already have been filled with water or debris before applying the sealing resin. We hypothesized that microleakage would decrease if the rebonding agent was applied before the polishing step, i.e., immediately after curing composite resin. On the buccal and lingual surfaces of 35 extracted human molar teeth, class V cavities were prepared withthe occlusal margin in enamel and the gingival margin in dentin. They were restored with a hybrid composite resin Z250 (3M ESPE, USA) using an adhesive AdperTM Single Bond 2 (3M ESPE). As rebonding agents, BisCover LV (Bisco, USA), ScotchBond Multi-Purpose adhesive (3M ESPE) and an experimental adhesive were applied on the restoration margins before polishing step or after successive polishing and etching steps. The infiltration depth of 2% methylene blue into the margin was measured using an optical stereomicroscope. The correlation between viscosity of rebonding agents and mciroleakage was also evaluated. There were no statistically significant differences in the microleakage within the rebonding procedures, within the rebonding agents, and within the margins. However, when the restorations were not rebonded, the microleakage at gingival margin was significantly higher than those groups rebonded with 3 agents (p < 0.05). The difference was not observed at the occlusal margin. No significant correlation was found between viscosity of rebonding agents and microleakage, except very weak correlation in case of rebonding after polishing and etching at gingival margin (r = -0.326, p = 0.041).

Citations

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  • Antibacterial effect of self-etching adhesive systems onStreptococcus mutans
    Seung-Ryong Kim, Dong-Hoon Shin
    Restorative Dentistry & Endodontics.2014; 39(1): 32.     CrossRef
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Original Articles
Effect of soft chelating irrigation on the sealing ability of GP/AH Plus root fillings
Yi-Suk Yu, Tae-Gun Kim, Kwang-Won Lee, Mi-Kyung Yu
J Korean Acad Conserv Dent 2009;34(6):484-490.   Published online November 30, 2009
DOI: https://doi.org/10.5395/JKACD.2009.34.6.484
AbstractAbstract PDFPubReaderePub

The purpose of this study was to evaluate the effect of soft chelating irrigant on the sealing ability of root fillings by using a glucose leakage test.

A total of 45 single-rooted teeth were selected for the study. The teeth were decoronated leaving a total length of 13mm. The root canals prepared using K3 NiTi rotary instruments to an apical dimension of size 45(0.06 taper). The specimens were then randomly divided into 3 experimental groups of 13 roots each and 2 control groups of 3 roots each. Specimen in each group were prepared with different irrigation protocols : group 1, 2.5% NaOCl; group 2, 2.5% NaOCl and 17% EDTA; group 3, 2.5% NaOCl and 15% HEBP. The root canals were filled with gutta-percha and AH Plus sealer using lateral condensation. After 7 days in 37℃, 100% humidity, the coronal-to-apical microleakage was evaluated quantitatively using a glucose leakage model. The leaked glucose concentration was measured with spectrophotometry at 1, 4, 7, 14, 21 and 28 days.

There was a tendency of increase in leakage in all experimental groups during experimental period. HEBP-treated dentin showed no significant difference with EDTA-treated dentin during experimental period. From the 21th day onward, HEBP-treated dentin showed significantly lower leakage than smear-covered dentin. HEBP-treated dentin displayed a similar sealing pattern to EDTA-treated dentin and a better sealing ability than smear-covered dentin. Consequently, a soft chelator(HEBP) could be considered as the possible alternative to EDTA.

Citations

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  • Effect of moisture on sealing ability of root canal filling with different types of sealer through the glucose penetration model
    Jin-Ah Jang, Hee-Lyang Kim, Mi-Ja Her, Kwang-Won Lee, Mi-Kyung Yu
    Journal of Korean Academy of Conservative Dentistry.2010; 35(5): 335.     CrossRef
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Comparison of marginal microleakage between low and high flowable resins in class V cavity
Sang-Bae Bae, Young-Gon Cho, Myeong-Seon Lee
J Korean Acad Conserv Dent 2009;34(6):477-483.   Published online November 30, 2009
DOI: https://doi.org/10.5395/JKACD.2009.34.6.477
AbstractAbstract PDFPubReaderePub

The purpose of this study was to compare the microleakage of low and high viscosity flowable resins in class V cavities applied with 1-step adhesives.

Forty class V cavities were prepared on the cervices of buccal and lingual surfaces of extracted molar teeth and divided into four groups (n=8). Cavities were restored with AQ Bond Plus/Metafil Flo α, G-Bond/UniFil LoFlo Plus (Low flow groups), AQ Bond Plus/Metafil Flo and G-Bond/UniFil Flow (High flow group), respectively.

Specimens were immersed in a 2% methylene blue solution for 24 hours, and bisected longitudinally. They were observed microleakages at the enamel and dentinal margins.

In conclusion, the low viscosity flowable resins showed lower marginal microleakage than do the high viscosity flowable resins in class V cavities.

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Apical microleakage of MTA with 4-META/MMA & TBB resin as a root-end filling material
Jin-Cheol Kim, Mi-Ri Kim, Hyun-Jung Ko, Won-Kyung Yang
J Korean Acad Conserv Dent 2009;34(4):371-376.   Published online July 31, 2009
DOI: https://doi.org/10.5395/JKACD.2009.34.4.371
AbstractAbstract PDFPubReaderePub

We evaluated in vitro microleakage of Mineral Trioxide Aggregate (MTA) powder with 4-methacryloxyethyl trimellitate anhydride (4-META) / methyl methacrylate (MMA) & tri-n-butylborane (TBB) resin as a retrograde filling material by using methylene blue dye method.

Fifty-two single rooted, extracted teeth were instrumented and obturated with gutta percha and AH plus sealer. The apical 3mm of each root was resected and 3mm deep ultrasonic root end preparation was done. External surface of roots was coated with nail varnish. Prepared teeth were randomly divided into five groups; Negative control: completely covered with nail varnish; Positive control: coated with nail varnish except for apical foramen; Group 1 (retrofilled with Portland cement); Group 2 (retrofilled with MTA); Group 3 (retrofilled with MTA powder mixed with 4-META/MMA & TBB resin). Immediately after completion of root-end filling, all specimens were submerged in methylene blue dye for 72 hours in 37℃ incubator. The roots were longitudinally sectioned and measured for extent of dye penetration by three different examiners under microscope (×10). The results were statistically analyzed using one way ANOVA and Turkey's HSD test. No leakage was evident in negative control and complete leakage in positive control group. Group 3 showed significantly less leakage than group 1 and 2 (p < 0.01). There was no significant difference between group 1 and 2 (p > 0.01).

It was concluded that MTA powder with 4-META/MMA & TBB resin was excellent in reducing initial apical microleakage.

Citations

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  • Characteristics of novel root-end filling material using epoxy resin and Portland cement
    Sang-Jin Lee, Jin Chung, Hee-Sam Na, Eun-Joo Park, Hyo-Jin Jeon, Hyeon-Cheol Kim
    Clinical Oral Investigations.2013; 17(3): 1009.     CrossRef
  • Sealing Ability of Three Different Materials Used as Retrograde Filling
    Ji-Hoon Park, Seung-Bok Kang, Yong-Hoon Choi, Ji-Hyun Bae
    Journal of Korean Dental Science.2012; 5(2): 60.     CrossRef
  • Physical properties of novel composite using Portland cement for retro-filling material
    Sang-Jin Lee, Ok-In Cho, Jiwan Yum, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim
    Journal of Korean Academy of Conservative Dentistry.2010; 35(6): 445.     CrossRef
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Microleakage of the experimental composite resin with three component photoinitiator systems
Ji-Hoon Kim, Dong-Hoon Shin
J Korean Acad Conserv Dent 2009;34(4):333-339.   Published online July 31, 2009
DOI: https://doi.org/10.5395/JKACD.2009.34.4.333
AbstractAbstract PDFPubReaderePub

This study was done to determine if there is any difference in microleakage between experimental composite resins, in which various proportions of three component photoinitiators (Camphoroquinone, OPPI, Amine) were included.

Four kinds of experimental composite resin were made by mixing 3.2% silanated barium glass (78 wt.%, average size; 1 µm) with each monomer system including variously proportioned photoinitiator systems used for photoinitiating BisGMA/BisEMA/TEGDMA monomer blend (37.5:37.5:25 wt.%). The weight percentage of each component were as follows (in sequence Camphoroquinone, OPPI, Amine): Group A - 0.5%, 0%, 1% / Group B - 2%, 0.2%, 2% / Group C - 0.2%, 1%, 0.2% / Group D - 1%, 1%, 2%.

Each composite resin was used as a filling material for round class V cavities (diameter: 2/3 of mesiodistal width; depth: 1.5 mm) made on extracted human premolars and they were polymerized using curing light unit (XL 2500, 3M ESPE) for 40 s with an intensity of 600 mW/cm2. Teeth were thermocycled five-hundred times between 50℃ and 550℃ for 30s at each temperature.

Electrical conductivity (µA) was recorded two times (just after thermocycling and after three-month storage in saline solution) by electrochemical method.

Microleakage scores of each group according to evaluation time were as follows [Group: at first record / at second record; unit (µA)]: A: 3.80 (0.69) / 13.22 (4.48), B: 3.42 (1.33) / 18.84 (5.53), C: 4.18 (2.55) / 28.08 (7.75), D: 4.12 (1.86) / 7.41 (3.41).

Just after thermocycling, there was no difference in microleakage between groups, however, group C showed the largest score after three-month storage. Although there seems to be no difference in microleakage between groups just after thermocycling, composite resin with highly concentrated initiation system or classical design (Camphoroquinone and Amine system) would be more desirable for minimizing microleakage after three-month storage.

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  • Comparison of polymerization shrinkage of dual-cure core build-up resin according to shade and curing mode
    Yoorina Choi, Karl Lee, Hoon-Sang Chang
    Oral Biology Research.2019; 43(4): 243.     CrossRef
  • Optimal combination of 3-component photoinitiation system to increase the degree of conversion of resin monomers
    Chang-Gyu Kim, Ho-Jin Moon, Dong-Hoon Shin
    Journal of Korean Academy of Conservative Dentistry.2011; 36(4): 313.     CrossRef
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The effect of MTAD as a final root canal irrigants on the coronal bacterial leakage of obturated root canals
Tae Woo Kim, Seok Woo Chang, Dong Sung Park
J Korean Acad Conserv Dent 2008;33(4):397-404.   Published online July 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.4.397
AbstractAbstract PDFPubReaderePub

The purpose of this study was to evaluate the effects of MTAD, EDTA and sodium hypochlorite(NaOCl) as final irrigants on coronal leakage resistance to Enterococcus faecalis. Forty extracted human maxillary molars were used in this experiment. The teeth were randomly divided into positive control group (Group 1; n = 5), negative control group (Group 2; n = 5) and three experimental groups (n = 30). In Group 3 (n = 10), the root canals were irrigated with sodium hypochlorite. In Group 4 (n = 10) and 5 (n = 10), the root canals were irrigated with sodium hypochlorite and rinsed with EDTA and MTAD, respectively. The teeth in each group were cleaned and shaped to #40 profile with .04 taper, and obturated with gutta-percha and AH-26 root canal sealer. The coronal portion of each tooth was placed in contact with inoculum of Enterococcus faecalis in Brain Heart Infusion (BHI) culture media. Each root tip was placed in a vial containing sterile culture media. The vials were placed in anaerobic chamber and observed everyday for turbidity for 180 days. Statistical analysis was performed using Fisher's Exact Test. After 180 days, Group 3, 4, and 5 showed 7, 4 and 5 leaking samples respectively. The differences in leakage resistance were not statistically significant among Group 3, 4 and 5.

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Microleakage of resilon by methacrylate-based sealer and self-adhesive resin cement
Sun-Young Ham, Jin-Woo Kim, Hye-Jin Shin, Kyung-Mo Cho, Se-Hee Park
J Korean Acad Conserv Dent 2008;33(3):204-212.   Published online May 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.3.204
AbstractAbstract PDFPubReaderePub

The purpose of this study was to compare the apical microleakage in root canal filled with Resilon by methacrylate-based root canal sealer or 2 different self-adhesive resin cements. Seventy single-rooted extracted human teeth were sectioned at the CEJ perpendicular to the long axis of the roots with diamond disk. Canal preparation was performed with crown-down technique using Profile NiTi rotary instruments and GG drill. Each canal was prepared to ISO size 40, .04 taper and 1 mm short from the apex. The prepared roots were randomly divided into 4 experimental groups of 15 roots each and 5 roots each for positive and negative control group. The root canals were filled by lateral condensation as follows. Group 1: Guttapercha with AH-26, Group 2: Resilon with RealSeal primer & sealer, Group 3: Resilon with Rely-X Unicem, Group 4: Resilon with BisCem. After stored in 37℃, 100% humidity chamber for 7 days, the roots were coated with 2 layers of nail varnish except apical 3 mm. The roots were then immersed in 1% methylene blue dye for 7 days. Apical microleakage was measured by a maximum length of linear dye penetration after roots were separated longitudinally. One way ANOVA and Scheffe's post-hoc test were performed for statistical analysis. Group 1 showed the least apical leakage and there was no statistical significance between Group 2, 3, 4. According to the results, the self adhesive resin cement is possible to use as sealer instead of primer & sealant when root canal filled by Resilon.

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Microleakage of endodontic temporary restorative materials under dynamic loading
Dong-Ho Jung, Young-Sin Noh, Hae-Doo Lee, Hoon-Sang Chang, Hyun-Wook Ryu, Kyung-San Min
J Korean Acad Conserv Dent 2008;33(3):198-203.   Published online May 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.3.198
AbstractAbstract PDFPubReaderePub

The purpose of this study was to compare the sealing abilities of four endodontic temporary restorative materials using a methylene blue dye penetration test under dynamic loading. Standardized access cavities were prepared in forty-four intact human permanent molar teeth, and the cavities were restored with Caviton, MD-Temp, IRM, or ZOE. After thermocycling, an intermittent load of 98 N at 1 Hz was applied for 1,000 cycles to the long axis of the functional cusp of each of the teeth, which were immersed in a 1% methylene blue solution. The teeth were split in half, and the linear depth of dye penetration was evaluated according to the criteria. The results were analyzed using one-way ANOVA (p = 0.05) and Duncan's multiple range test. The results demonstrated that Caviton and MD-Temp showed significantly lower microleakage than IRM and ZOE. It was concluded that Caviton and MD-Temp exhibited better sealing ability than IRM and ZOE under dynamic loading.

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  • Coronal microleakage of four temporary restorative materials in Class II-type endodontic access preparations
    Sang-Mi Yun, Lorena Karanxha, Hee-Jin Kim, Sung-Ho Jung, Su-Jung Park, Kyung-San Min
    Restorative Dentistry & Endodontics.2012; 37(1): 29.     CrossRef
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Microleakage of resilon: Effects of several self-etching primer
Jong-Hyeon O, Se-Hee Park, Hye-Jin Shin, Kyung-Mo Cho, Jin-Woo Kim
J Korean Acad Conserv Dent 2008;33(2):133-140.   Published online March 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.2.133
AbstractAbstract PDFPubReaderePub

The purpose of this study was to compare the apical microleakage in root canal filled with Resilon by several self-etching primers and methacrylate-based root canal sealer. Seventy single-rooted human teeth were used in this study. The canals were instrumented by a crown-down manner with Gate-Glidden drills and .04 Taper Profile to ISO #40. The teeth were randomly divided into four experimental groups of 15 teeth each according to root canal filling material and self-etching primers and two control groups (positive and negative) of 5 teeth each as follows: group 1 - gutta percha and AH26® sealer; group 2 - Resilon, RealSeal™ primer and RealSeal™ sealer; group 3 - Resilon, Clearfil SE Bond® primer and RealSeal™ sealer group 4 - Resilon, AdheSe® primer and RealSeal™ sealer. Apical leakage was measured by a maximum length of linear dye penetration of roots sectioned longitudinally by diamond disk. Statistical analysis was performed using the One-way ANOVA followed by Scheffe's test. There were no statistical differences in the mean apical dye penetration among the groups 2, 3 and 4 of self-etching primers. And group 1, 2 and 3 had also no statistical difference in apical dye penetration. But, there was statistical difference between group 1 and 4 (p < 0.05). The group 1 showed the least dye penetration. According to the results of this study, Resilon with self-etching primer was not sealed root canal better than gutta precha with AH26® at sealing root canals. And there was no significant difference in apical leakage among the three self-etching primers.

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Polymerization shrinkage, hygroscopic expansion and microleakage of resin-based temporary filling materials
Nak Yeon Cho, In-Bog Lee
J Korean Acad Conserv Dent 2008;33(2):115-124.   Published online March 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.2.115
AbstractAbstract PDFPubReaderePub

The purpose of this study was to measure the polymerization shrinkage and hygroscopic expansion of resin-based temporary filling materials and to evaluate microleakage at the interface between the materials and cavity wall.

Five resin-based temporary filing materials were investigated: Fermit (Vivadent), Quicks (Dentkist), Provifil (Promedica), Spacer (Vericom), Clip (Voco). Caviton (GC) was also included for comparison. Polymerization shrinkage of five resin-based temporary filling materials was measured using the bonded disc method. For the measurement of hygroscopic expansion, the discs of six cured temporary filling materials were immersed in saline and a LVDT displacement sensor was used to measure the expansion for 7 days. For estimating of microleakage, Class I cavities were prepared on 120 extracted human molars and randomly assigned to 6 groups of 20 each. The cavities in each group were filled with six temporary filling materials. All specimens were submitted to 1000 thermo-cycles, with temperature varying from 5℃/55℃. Microleakage was determined using a dye penetration test.

The results were as follows:

Fermit had significantly less polymerization shrinkage than the other resin-based temporary filling materials. Fermit (0.22 %) < Spacer (0.38 %) < Quicks (0.64 %), Provifil (0.67 %), Clip (0.67 %)

Resin-based temporary filling materials showed 0.43 - 1.1 % expansion in 7 days.

Fermit showed the greatest leakage, while Quicks exhibited the least leakage.

There are no correlation between polymerization shrinkage or hygroscopic expansion and microleakage of resin-based temporary filling materials.

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  • Comparison of color stability, gloss, mechanical and physical properties according to dental temporary filling materials type
    Ji-Won Choi, You-Young Shin, Song-Yi Yang
    Korean Journal of Dental Materials.2022; 49(3): 97.     CrossRef
  • Comparative analysis of strain according to two wavelengths of light source and constant temperature bath deposition in ultraviolet-curing resin for dental three-dimensional printing
    Dong-Yeon Kim, Gwang-Young Lee, Hoo-Won Kang, Cheon-Seung Yang
    Journal of Korean Acedemy of Dental Technology.2020; 42(3): 208.     CrossRef
  • Effect of cavity disinfectants on antibacterial activity and microtensile bond strength in class I cavity
    Bo-Ram KIM, Man-Hwan OH, Dong-Hoon SHIN
    Dental Materials Journal.2017; 36(3): 368.     CrossRef
  • Shear bond strength of a self-adhesive resin cement to resin-coated dentin
    Jee-Youn Hong, Cheol-Woo Park, Jeong-Uk Heo, Min-Ki Bang, Jae-Jun Ryu
    The Journal of Korean Academy of Prosthodontics.2013; 51(1): 27.     CrossRef
  • Coronal microleakage of four temporary restorative materials in Class II-type endodontic access preparations
    Sang-Mi Yun, Lorena Karanxha, Hee-Jin Kim, Sung-Ho Jung, Su-Jung Park, Kyung-San Min
    Restorative Dentistry & Endodontics.2012; 37(1): 29.     CrossRef
  • Microtensile bond strength of resin inlay bonded to dentin treated with various temporary filling materials
    Tae-Woo Kim, Bin-Na Lee, Young-Jung Choi, So-Young Yang, Hoon-Sang Chang, Yun-Chan Hwang, In-Nam Hwang, Won-Mann Oh
    Journal of Korean Academy of Conservative Dentistry.2011; 36(5): 419.     CrossRef
  • The Effect of Temporary Filling Materials on The Adhesion between Dentin Adhesive-coated Surface and Resin Inlay
    Tae-Gun Kim, Kwang-Won Lee, Mi-Kyung Yu
    Journal of Korean Academy of Conservative Dentistry.2008; 33(6): 553.     CrossRef
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Evaluation of the influence of apical sizes on the apical sealing ability of the modified continuous wave technique
Muhyun Ryu, Ilyoung Jung, Seungjong Lee, Sujung Shin, Euiseong Kim
J Korean Acad Conserv Dent 2008;33(1):66-75.   Published online January 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.1.066
AbstractAbstract PDFPubReaderePub

This study examined the influence of the apical sizes on the sealing ability of a root canal filling.

Thirty-six single rooted teeth with a single canal were divided into 3 groups (n = 12) and instrumented with either the Profile® or LightSpeed® system to achieve three different apical sizes (master apical file [MAF] of #25, #40, or #60). The teeth were filled with gutta percha using a modified continuous wave technique. The level of microleakage was determined by immersing ten teeth from each group into India ink for 1 week followed by clearing with nitric acid, ethyl-alcohol, and methylsalicylate. The microleakage was measured using vernier calipers. The data was analyzed statistically using Kruskal-Wallis one-way ANOVA and a Student-Newman-Keuls Method. Two teeth from each group were sectioned horizontally at 1, 2, 3 and 4 mm from the apex in order to observe a cross section.

The apical size was significantly (p < .05) influenced the level of microleakage. In the Student-Newman-Deuls Method, MAF sizes of #25 and #40; and MAF sizes of #25 and #60, respectively showed a statistically significant difference. There was no significant difference between #40 and #60. In most cross sections, oval-shaped canals were observed, and the irregularity of the internal surface increased with decreasing apical size. There was also an increase in the area of recess, which is the area where the canal space is not filled with either gutta-percha or sealer.

When the root canals are filled using a modified continuous wave technique, canal filling with more consistent and predictable outcome may be expected as the apical preparation size is increased.

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The nanoleakage patterns of experimental hydrophobic adhesives after load cycling
Suh-Jin Sohn, Ju-Hae Chang, Suk-Ho Kang, Hyun-Mi Yoo, Byeong-Hoon Cho, Ho-Hyun Son
J Korean Acad Conserv Dent 2008;33(1):9-19.   Published online January 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.1.009
AbstractAbstract PDFPubReaderePub

The purpose of this study was: (1) to compare nanoleakage patterns of a conventional 3-step etch and rinse adhesive system and two experimental hydrophobic adhesive systems and (2) to investigate the change of the nanoleakage patterns after load cycling. Two kinds of hydrophobic experimental adhesives, ethanol containing adhesive (EA) and methanol containing adhesive (MA), were prepared. Thirty extracted human molars were embedded in resin blocks and occlusal thirds of the crowns were removed. The polished dentin surfaces were etched with a 35% phosphoric acid etching gel and rinsed with water. Scotchbond Multi-Purpose (MP), EA and MA were used for bonding procedure. Z-250 composite resin was built-up on the adhesive-treated surfaces. Five teeth of each dentin adhesive group were subjected to mechanical load cycling. The teeth were sectioned into 2 mm thick slabs and then stained with 50% ammoniacal silver nitrate. Ten specimens for each group were examined under scanning electron microscope in backscattering electron mode. All photographs were analyzed using image analysis software. Three regions of each specimen were used for evaluation of the silver uptake within the hybrid layer. The area of silver deposition was calculated and expressed in gray value. Data were statistically analyzed by two-way ANOVA and post-hoc testing of multiple comparisons was done with the Scheffe's test. Silver particles were observed in all the groups. However, silver particles were more sparsely distributed in the EA group and the MA group than in the MP group (p < .0001). There were no changes in nanoleakage patterns after load cycling.

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  • The effect of the removal of chondroitin sulfate on bond strength of dentin adhesives and collagen architecture
    Jong-Ryul Kim, Sang-Jin Park, Gi-Woon Choi, Kyoung-Kyu Choi
    Journal of Korean Academy of Conservative Dentistry.2010; 35(3): 211.     CrossRef
  • The effect of priming etched dentin with solvent on the microtensile bond strength of hydrophobic dentin adhesive
    Eun-Sook Park, Ji-Hyun Bae, Jong-Soon Kim, Jae-Hoon Kim, In-Bog Lee, Chang-Keun Kim, Ho-Hyun Son, Byeong-Hoon Cho
    Journal of Korean Academy of Conservative Dentistry.2009; 34(1): 42.     CrossRef
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Comparison of apical sealing ability of continuous wave of obturation technique using EndoTwinn and System B
Hyun-Ju Shin, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim
J Korean Acad Conserv Dent 2007;32(6):522-529.   Published online November 30, 2007
DOI: https://doi.org/10.5395/JKACD.2007.32.6.522
AbstractAbstract PDFPubReaderePub

The purpose of this study was to compare the apical leakage of the root canal filled with the System B and the EndoTwinn (the combined application of heat and ultrasonic vibration).

Sixty extracted premolars with straight root were cleaned and shaped to size 35. Group SB was obturated using System B and Group ET was filled with EndoTwinn. A size 35 of 0.06 tapered gutta-percha and Adseal were used and the plugger which could be introduced to 4 mm short of working length was selected in the obturation procedure. As the positive control, Group PC was not filled. In Group SB, ET and PC, all external surfaces of each tooth were coated with nail varnish leaving only 1 mm area around the apical foramen. In the negative control of Group NSB and Group NET, all of external tooth surface including apical foramen was coated with the nail varnish. The specimens were immersed in methylene blue dye solution for 2 days. Then the specimens were sectioned at each 1 mm from apex to 5 mm level. The final score of one specimen was given by summing up of the points at all levels.

The dye leakage of Group ET was significantly less than that observed in Group SB (p < 0.05). And the frequency of gutta-percha pulling out from root canal when the plugger was removed was more often with the System B than with EndoTwinn but there was no significant difference.

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Comparison of apical sealing efficacies using different plugging depth in continuous wave of obturation technique
Sang-Jin Lee, Jeong-Kil Park, Bock Hur, Hyeon-Cheol Kim
J Korean Acad Conserv Dent 2007;32(6):491-497.   Published online November 30, 2007
DOI: https://doi.org/10.5395/JKACD.2007.32.6.491
AbstractAbstract PDFPubReaderePub

The purpose of this study was to compare apical sealing ability of continuous wave canal filling technique according to various heat source plugging depths.

Eighty one extracted human premolars with straight root were cleaned and shaped to size 35 using .06 taper rotary NiTi file. After cleansing and shaping, the teeth were divided into 5 groups following the heat source probing depths from the apex; 3, 4, 5, 6 and 7 mm. All specimens were filled using E&Q plus with #35 / .06 tapered gutta-percha cone. The positive control teeth were not filled. All teeth were coated with nail varnish except the apical 1 mm around the apical foramen. Negative control teeth were completely sealed include the apical foramen. All specimens were immersed in 1% methylene blue solution for 72 hours. Then the specimens were sectioned horizontally at 1, 2 and 3 mm from the root apex. Each sectioned surface was photographed using a digital camera attached to the stereomicroscope at 12.5 × 2.5 fold magnification. All points at 1, 2 and 3 mm were summed as final score of one specimen. Statistical analysis of the collected data was performed.

Under the condition of this study, there was no significant difference between the heat source plugging depths of 3, 4, 5, 6 and 7 mm in apical sealing ability. All of apical heat source plugging depth from 3 to 7 mm including Buchanan's protocol -from 5 to 7 mm- seems to be acceptable in clinical application.

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Effect of a new resin monomer on the microleakage of composite resin restorations
JH Bae, YK Kim, PY Yoon, MA Lee, BH Cho
J Korean Acad Conserv Dent 2007;32(5):469-475.   Published online September 30, 2007
DOI: https://doi.org/10.5395/JKACD.2007.32.5.469
AbstractAbstract PDFPubReaderePub

The purpose of this study was to evaluate the effect of a new resin monomer on the microleakage of composite resin restorations. By adding new methoxylated Bis-GMA (Bis-M-GMA, 2,2-bis[4-(2-methoxy-3-methacryloyloxy propoxy) phenyl] propane) having low viscosity, the content of TEGDMA which has adverse effects on polymerization shrinkage might be decreased. As a result, microleakage might be improved.

2 mm × 2 mm × 2 mm cavities with occlusal margins in enamel and gingival margins in dentin were prepared on buccal and lingual surfaces of 40 extracted human premolars. Prepared teeth were randomly divided into four groups and restored with Clearfil SE bond (Kuraray, Japan) and one of experimental composite resins; EX1, Experimental composite resin1 (Bis-M-GMA/TEGDMA = 95/5 wt%, 40 nm nanofillers); EX2, Experimental composite resin2 (Bis-M-GMA/TEGDMA = 95/5 wt%, 20 nm nanofillers); EX3, Experimental composite resin3 (Bis-GMA/TEGDMA = 70/30 wt%, 40 nm nanofillers); and Filtek Z250 (3M ESPE, USA) was filled as a control group. The restored teeth were thermocycled, and immersed in 2% methylene blue solution for 24 hours. The teeth were sectioned buccolingually with a low speed diamond saw and evaluated for microleakage under stereomicroscope. The data were statistically analyzed by Pearson Chi-Square test and Fisher Exact test (p = 0.05).

The microleakage scores seen at the enamel margin were significantly lower than those of dentin margin (p = 0.007). There were no significant differences among the composite resins in the microleakage scores within each margin (p > 0.05). Bis-M-GMA, a new resin monomer having low viscosity, might in part replace high viscous Bis-GMA and might improve the quality of composite resin.

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  • Sealing Ability of Three Different Materials Used as Retrograde Filling
    Ji-Hoon Park, Seung-Bok Kang, Yong-Hoon Choi, Ji-Hyun Bae
    Journal of Korean Dental Science.2012; 5(2): 60.     CrossRef
  • Surface roughness of experimental composite resins using confocal laser scanning microscope
    JH Bae, MA Lee, BH Cho
    Journal of Korean Academy of Conservative Dentistry.2008; 33(1): 1.     CrossRef
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Microleakage of 2-step adhesive systems in diamond-prepared cavity
Myung-Goo Lee, Kwon-Hwan Cho, Young-Gon Cho
J Korean Acad Conserv Dent 2007;32(5):437-444.   Published online September 30, 2007
DOI: https://doi.org/10.5395/JKACD.2007.32.5.437
AbstractAbstract PDFPubReaderePub

The purpose of this study was to compare the marginal microleakage of different 2-step adhesive systems in Class V cavities prepared with different diamond points.

Forty Class V cavities were prepared with two different (coarse or fine) diamond points on cervical third of extracted molars. The occlusal and gingival margin of cavities was located in enamel and dentin, respectively. They were divided into one of four equal groups (n = 10) and ; Group 1-prepared with coarse diamond point (EX-41), restored with Single Bond and Z 250, Group 2-prepared with fine diamond piont (TF-21F), restored with Single Bond and Z 250, Group 3-prepared with coarse diamond point (EX-41), restored with Clearfil SE Bond and Clearfil AP-X, Group 4-prepared with fine diamond point (TF-21F), restored with Clearfil SE Bond and Clearfil AP-X.

Specimens were thermocycled, immersed in a 2% methylene blue solution for 24 hours, and bisected longitudinally. They were observed leakages at enamel and dentinal margins. Data were analyzed using Mann-Whitney and Wilcoxon signed ranked test.

In this study, marginal microleakage of Single Bond was not affected by type of diamond points. But Clearfil SE Bond showed higher marginal microleakage at both enamel and dentinal margin when Class V cavity was prepared with coarse diamond point.

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  • Microshear bond strength of a self-etching primer adhesive to enamel according to the type of bur
    Jin-Ho Jeong, Young-Gon Cho, Myung-Seon Lee
    Journal of Korean Academy of Conservative Dentistry.2011; 36(6): 477.     CrossRef
  • Effect of cutting instruments on the dentin bond strength of a self-etch adhesive
    Young-Gon Lee, So-Ra Moon, Young-Gon Cho
    Journal of Korean Academy of Conservative Dentistry.2010; 35(1): 13.     CrossRef
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The effect of bonding resin on bond strength of dual-cure resin cements
Duck-Su Kim, Sang-Hyuk Park, Gi-Woon Choi, Kyung-Kyu Choi
J Korean Acad Conserv Dent 2007;32(5):426-436.   Published online September 30, 2007
DOI: https://doi.org/10.5395/JKACD.2007.32.5.426
AbstractAbstract PDFPubReaderePub

The objective of this study is to evaluate the effect of an additional application of bonding resin on the bond strength of resin luting cements in both the light-cure (LC) and self-cure (SC) modes by means of the µTBS tests.

Three combinations of One-Step Plus with Choice, Single Bond with Rely X ARC, and One-Up Bond F with Bistite II were used. D/E resin and Pre-Bond resin were used for the additional application. Twelve experimental groups were made. Three mandibular 3rd molars were used in each group. Indirect composite blocks were cemented on the tooth surface. 1 × 1 mm2 dentin-composite beam for µTBS testing were made and tested.

When total-etching dentin adhesives were used, an additional application of the bonding resin increased the bond strength (P < 0.05). However, this additional application didn't influence the bond strength of self-etching dentin adhesives (P > 0.05).

In conclusion, the results suggest that an additional application of the bonding resin increases bond strength and enhances quality of bonding when using total-etching dentin adhesives.

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  • Pull-out bond strength of a self-adhesive resin cement to NaOCl-treated root dentin: effect of antioxidizing agents
    Maryam Khoroushi, Marzieh Kachuei
    Restorative Dentistry & Endodontics.2014; 39(2): 95.     CrossRef
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