Skip Navigation
Skip to contents

Restor Dent Endod : Restorative Dentistry & Endodontics

OPEN ACCESS

Search

Page Path
HOME > Search
14 "Thickness"
Filter
Filter
Article category
Keywords
Publication year
Authors
Research Articles
Proximity of the mandibular molar root apex from the buccal bone surface: a cone-beam computed tomographic study
Dokyung Kim, Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung Kyo Kim
Restor Dent Endod 2016;41(3):182-188.   Published online July 14, 2016
DOI: https://doi.org/10.5395/rde.2016.41.3.182
AbstractAbstract PDFPubReaderePub
Objectives

The purpose of this study was to evaluate the proximity of the mandibular molar apex to the buccal bone surface in order to provide anatomic information for apical surgery.

Materials and Methods

Cone-beam computed tomography (CBCT) images of 127 mandibular first molars and 153 mandibular second molars were analyzed from 160 patients' records. The distance was measured from the buccal bone surface to the root apex and the apical 3.0 mm on the cross-sectional view of CBCT.

Results

The second molar apex and apical 3 mm were located significantly deeper relative to the buccal bone surface compared with the first molar (p < 0.01). For the mandibular second molars, the distance from the buccal bone surface to the root apex was significantly shorter in patients over 70 years of age (p < 0.05). Furthermore, this distance was significantly shorter when the first molar was missing compared to nonmissing cases (p < 0.05). For the mandibular first molars, the distance to the distal root apex of one distal-rooted tooth was significantly greater than the distance to the disto-buccal root apex (p < 0.01). In mandibular second molar, the distance to the apex of C-shaped roots was significantly greater than the distance to the mesial root apex of non-C-shaped roots (p < 0.01).

Conclusions

For apical surgery in mandibular molars, the distance from the buccal bone surface to the apex and apical 3 mm is significantly affected by the location, patient age, an adjacent missing anterior tooth, and root configuration.

Citations

Citations to this article as recorded by  
  • Expert consensus on intentional tooth replantation
    Zhengmei Lin, Dingming Huang, Shuheng Huang, Zhi Chen, Qing Yu, Benxiang Hou, Lihong Qiu, Wenxia Chen, Jiyao Li, Xiaoyan Wang, Zhengwei Huang, Jinhua Yu, Jin Zhao, Yihuai Pan, Shuang Pan, Deqin Yang, Weidong Niu, Qi Zhang, Shuli Deng, Jingzhi Ma, Xiuping
    International Journal of Oral Science.2025;[Epub]     CrossRef
  • Outcome of intentional replantation of endodontically treated teeth with periapical pathosis: A systematic review and meta‐analysis
    Faizan Javed, Kamil Zafar, Farhan R. Khan
    Australian Endodontic Journal.2023; 49(S1): 494.     CrossRef
  • Proximity of maxillary molar apexes to the cortical bone surface and the maxillary sinus
    Han Shin Lee, Dokyung Kim, Sung Kyo Kim
    Restorative Dentistry & Endodontics.2022;[Epub]     CrossRef
  • Alveolar bone thickness overlying healthy maxillary and mandibular teeth: A systematic review and meta-analysis
    Marziyeh Shafizadeh, Azita Tehranchi, Armin Shirvani, Saeed Reza Motamedian
    International Orthodontics.2021; 19(3): 389.     CrossRef
  • Relationship between the anatomic structures and mandibular posterior teeth for endodontic surgery in a Turkish population: a cone-beam computed tomographic analysis
    Zeliha Uğur Aydın, Duygu Göller Bulut
    Clinical Oral Investigations.2019; 23(9): 3637.     CrossRef
  • 257 View
  • 2 Download
  • 5 Crossref
Close layer
Effect of resin thickness on the microhardness and optical properties of bulk-fill resin composites
Eun-Ha Kim, Kyoung-Hwa Jung, Sung-Ae Son, Bock Hur, Yong-Hoon Kwon, Jeong-Kil Park
Restor Dent Endod 2015;40(2):128-135.   Published online January 13, 2015
DOI: https://doi.org/10.5395/rde.2015.40.2.128
AbstractAbstract PDFPubReaderePub
Objectives

This study evaluated the effects of the resin thickness on the microhardness and optical properties of bulk-fill resin composites.

Methods

Four bulk-fill (Venus Bulk Fill, Heraeus Kulzer; SDR, Dentsply Caulk; Tetric N-Ceram Bulk Fill, Ivoclar vivadent; SonicFill, Kerr) and two regular resin composites (Charisma flow, Heraeus Kulzer; Tetric N-Ceram, Ivoclar vivadent) were used. Sixty acrylic cylindrical molds were prepared for each thickness (2, 3 and 4 mm). The molds were divided into six groups for resin composites. The microhardness was measured on the top and bottom surfaces, and the colors were measured using Commission Internationale d'Eclairage (CIE) L*a*b* system. Color differences according to the thickness and translucency parameters and the correlations between the microhardness and translucency parameter were analyzed. The microhardness and color differences were analyzed by ANOVA and Scheffe's post hoc test, and a student t-test, respectively. The level of significance was set to α = 0.05.

Results

The microhardness decreased with increasing resin thickness. The bulk-fill resin composites showed a bottom/top hardness ratio of almost 80% or more in 4 mm thick specimens. The highest translucency parameter was observed in Venus Bulk Fill. All resin composites used in this study except for Venus Bulk Fill showed linear correlations between the microhardness and translucency parameter according to the thickness.

Conclusions

Within the limitations of this study, the bulk-fill resin composites used in this study can be placed and cured properly in the 4 mm bulk.

Citations

Citations to this article as recorded by  
  • Experimental study of polishing systems on surface roughness and color stability of novel bulk-fill composite resins
    Seda Nur Karakaş, Sevde Gül Batmaz, Volkan Çiftçi, Cihan Küden
    BMC Oral Health.2025;[Epub]     CrossRef
  • Predictors of procedural errors in class II resin composite restorations using bitewing radiographs
    Abdulrahman A. Balhaddad, Nawaf AlGhamdi, Mohammed Alqahtani, Osama A. Alsulaiman, Ali Alshammari, Malik J. Farraj, Ahmed A. Alsulaiman
    The Saudi Dental Journal.2024; 36(4): 638.     CrossRef
  • Evaluation of Surface Roughness and Microhardness of Bulk-fill and Nanohybrid Composite after Exposure to Different Beverages at Various Time Intervals – An In vitro Study
    Sachin Bengal, Gautam P. Badole, Pratima R. Shenoi, Rajesh Kubde, Shriya Shahu
    Annals of African Medicine.2024; 23(3): 466.     CrossRef
  • Influence of Light‐Curing Time and Increment Thickness on the Properties of Bulk Fill Composite Resins With Distinct Application Systems
    Carlos Rocha Gomes Torres, Taiana Paola Prado, Daniele Mara da Silva Ávila, Cesar Rogério Pucci, Alessandra Bühler Borges, Heng Bo Jiang
    International Journal of Dentistry.2024;[Epub]     CrossRef
  • Preheating effect on microhardness and depth of cure of three bulk-fill composite resins: An in vitro study
    Aashna Sunil Sahetia, Divya Rupesh Jain, Padmaja Panditrao Sirsat, Meenal N. Gulve, Swapnil J. Kolhe, Surbhi P. Patel
    Endodontology.2024;[Epub]     CrossRef
  • Clinical Longevity of Sonicated and Unsonicated Composite Resin Restorations in Posterior Permanent Teeth: A Systematic Review and Meta-Analysis
    Lorrane Salvador de Mello, Fabiola Fontes Galdino, Jayzon Stephan Brooks, Tatiana Kelly da Silva Fidalgo, Kátia Rodrigues Reis
    Pesquisa Brasileira em Odontopediatria e Clínica Integrada.2024;[Epub]     CrossRef
  • Translucency of bulk‐fill composite materials: A systematic review
    Gaetano Paolone, Sofia Baldani, Niccolò De Masi, Mauro Mandurino, Giacomo Collivasone, Nicola Scotti, Enrico Gherlone, Giuseppe Cantatore
    Journal of Esthetic and Restorative Dentistry.2024; 36(7): 995.     CrossRef
  • Assessment of Microhardness of Bulk-Fill Class II Resin Composite Restorations Performed by Preclinical Students: An In Vitro Study
    Ali Abdel-Halim Abdel-Azim Hassan, Abdulelah Sameer Sindi, Abeer Mohamed Atout, Mohamed SM Morsy, Khurshid A. Mattoo, Vishnu Teja Obulareddy, Ankita Mathur, Vini Mehta
    European Journal of General Dentistry.2024; 13(02): 158.     CrossRef
  • Effect of Indenter Load on Vickers Microhardness and Indentation Depth of One Resin Composite
    Richard B. Price, Braden Sullivan
    Materials.2024; 17(24): 6156.     CrossRef
  • The Effect of Layer Thickness and Light Intensity on the Degree of Conversion, Microhardness and Cytotoxicity of Bulk Fill Composite Resins
    Sevde Gül BATMAZ, Ayşe DÜNDAR, Çağatay BARUTÇUGİL
    Clinical and Experimental Health Sciences.2023; 13(4): 795.     CrossRef
  • Comparative Evaluation of the Color Stability and Clinical performance of bulk-filled composites: A Split-mouth Randomized Controlled Trial
    Karuna YM, Srikant N, Kundabala M, Anupama Nayak P, Ashwin Rao, Maimoona TM
    Research Journal of Pharmacy and Technology.2023; : 5091.     CrossRef
  • Effect of Using Manufacturer-recommended Exposure Times to Photo-activate Bulk-fill and Conventional Resin-based Composites
    LM Barcelos, SSL Braga, RAS Pereira, RB Price, CJ Soares
    Operative Dentistry.2023; 48(3): 304.     CrossRef
  • Effect of Different Polymerization Times on Color Change, Translucency Parameter, and Surface Hardness of Bulk-Fill Resin Composites
    HY Gonder, M Fidan
    Nigerian Journal of Clinical Practice.2022; 25(10): 1751.     CrossRef
  • The effect of contemporary finishing and polishing systems on the surface roughness of bulk fill resin composite and nanocomposites
    Seda Gömleksiz, Oğuzhan Gömleksiz
    Journal of Esthetic and Restorative Dentistry.2022; 34(6): 915.     CrossRef
  • Evaluation of the microleakage in class II cavities restored with composite resin by using different placement techniques and light cure units– An in vitro study
    Swathi Miskin, Chandrasekhar Manduru, Nagalakshmi Reddy Sampathi, Upendranatha Reddy Nagireddy, Sujayeendranatha Reddy E, Sushma Chandra
    International Dental Journal of Student's Research.2022; 10(2): 53.     CrossRef
  • Comparison of mechanical and optical properties of a newly marketed universal composite resin with contemporary universal composite resins: An in vitro study
    Sevil Gurgan, Uzay Koc Vural, Ivana Miletic
    Microscopy Research and Technique.2022; 85(3): 1171.     CrossRef
  • Effect of Additional Light Curing on Colour Stability of Composite Resins
    Kubra Alan Unsal, Emel Karaman
    International Dental Journal.2022; 72(3): 346.     CrossRef
  • Evaluation of Glass-Ionomer versus Bulk-Fill Resin Composite: A Two-Year Randomized Clinical Study
    İlhan Uzel, Arzu Aykut-Yetkiner, Nazan Ersin, Fahinur Ertuğrul, Elif Atila, Mutlu Özcan
    Materials.2022; 15(20): 7271.     CrossRef
  • Awareness and Utilization of Bulk-Fill Composites among Dental Practitioners in Saudi Arabia
    Hani M. Nassar, Ensanya A. Abou Neel
    The Open Dentistry Journal.2021; 15(1): 160.     CrossRef
  • Dental Bulk-Fill Resin Composites Polymerization Efficiency: A Systematic Review and Meta-Analysis
    Reem Ajaj, Nada Farsi, Lama Alzain, Nour Nuwaylati, Raneem Ghurab, Hani Nassar
    Journal of Composites Science.2021; 5(6): 149.     CrossRef
  • Handling and Mechanical Properties of Low-viscosity Bulk-fill Resin Composites
    E Hirokane, T Takamizawa, T Tamura, S Shibasaki, A Tsujimoto, WW Barkmeier, MA Latta, M Miyazaki
    Operative Dentistry.2021; 46(5): E185.     CrossRef
  • Utilizing Light Cure Units: A Concise Narrative Review
    Fatin A. Hasanain, Hani M. Nassar
    Polymers.2021; 13(10): 1596.     CrossRef
  • The Effect of Different Dietary and Therapeutic Solutions on the Color Stability of Resin-Matrix Composites Used in Dentistry: An In Vitro Study
    Lígia Lopes-Rocha, José Manuel Mendes, Joana Garcez, Ana Góis Sá, Teresa Pinho, Júlio C. M. Souza, Orlanda Torres
    Materials.2021; 14(21): 6267.     CrossRef
  • Fracture resistance of endodontically treated premolars restored with bulk-fill composite resins
    Fereshteh Shafiei, Paria Dehghanian, Nasibeh Ghaderi, Maryam Doozandeh
    Dental Research Journal.2021; 18(1): 60.     CrossRef
  • Mechanical properties of low and regular viscosity bulk fill composites in a 3D dentin cavity model
    Rodolfo Xavier Sousa-Lima, Ana Margarida dos Santos Melo, Lílian Karine Cardoso Guimarães, Rodrigo Othávio de Assunção e Souza, Marília Regalado Galvão Rabelo Caldas, Isauremi Vieira de Assunção, Boniek Castillo Dutra Borges
    Journal of Adhesion Science and Technology.2021; 35(3): 325.     CrossRef
  • Impact of light-cure protocols on the porosity and shrinkage of commercial bulk fill dental resin composites with different flowability
    Daina Dayana Arenas Buelvas, João Felipe Besegato, Bruno Luiz Santana Vicentin, Eduardo Inocente Jussiani, Márcio Grama Hoeppner, Avacir Casanova Andrello, Eduardo Di Mauro
    Journal of Polymer Research.2020;[Epub]     CrossRef
  • Effect of time on the post-irradiation curing of six resin-based composites
    Christina Kaiser, Richard Bengt Price
    Dental Materials.2020; 36(8): 1019.     CrossRef
  • The Effects of Irradiance on Translucency and Surface Gloss of Different Bulk-Fill Composite Resins: An in vitro Study


    Abrar N Bin Nooh, Hend Al Nahedh, Mohammad AlRefeai, Fahad AlKhudhairy
    Clinical, Cosmetic and Investigational Dentistry.2020; Volume 12: 571.     CrossRef
  • Color Stability and Micro-Hardness of Bulk-Fill Composite Materials after Exposure to Common Beverages
    Nora Bahbishi, Waad Mzain, Bayan Badeeb, Hani M. Nassar
    Materials.2020; 13(3): 787.     CrossRef
  • Polymerization Stress and Gap Formation of Self-adhesive, Bulk-fill and Flowable Composite Resins
    EL Nakano, ASC de Souza, LCC Boaro, LH Catalani, RR Braga, F Gonçalves
    Operative Dentistry.2020; 45(6): E308.     CrossRef
  • Varying the Polishing Protocol Influences the Color Stability and Surface Roughness of Bulk-Fill Resin-Based Composites
    Filipa Freitas, Teresa Pinheiro de Melo, António HS Delgado, Paulo Monteiro, João Rua, Luís Proença, Jorge Caldeira, Ana Mano Azul, José João Mendes
    Journal of Functional Biomaterials.2020; 12(1): 1.     CrossRef
  • Characterization and Comparative Analysis of Voids in Class II Composite Resin Restorations by Optical Coherence Tomography
    CA Pardo Díaz, CAK Shimokawa, CS Sampaio, AZ Freitas, ML Turbino
    Operative Dentistry.2020; 45(1): 71.     CrossRef
  • Clinical performance and chemical-physical properties of bulk fill composites resin —a systematic review and meta-analysis
    Leticia Cristina Cidreira Boaro, Diana Pereira Lopes, Andréia Santos Caetano de Souza, Ellea Lie Nakano, Mirko Dennys Ayala Perez, Carmem Silvia Pfeifer, Flávia Gonçalves
    Dental Materials.2019; 35(10): e249.     CrossRef
  • Evaluation of the Polymerization Depth of Bulk Fill Resin Composites Polymerized by Different Procedures: An In-Vitro Study
    Esra ÖZYURT, Aysegul KURT, Handan YILDIRIM
    Clinical and Experimental Health Sciences.2019; 9(4): 304.     CrossRef
  • Internal adaptation of composite restorations with or without an intermediate layer: Effect of polymerization shrinkage parameters of the layer material
    Seung-Hoon Han, Alireza Sadr, Yasushi Shimada, Junji Tagami, Sung-Ho Park
    Journal of Dentistry.2019; 80: 41.     CrossRef
  • Color Stability of Bulk-Fill Resin Composites after Immersion in Different Media
    Sungkyoon Kang, Jihyun Song
    THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY.2019; 46(4): 353.     CrossRef
  • Degree of Conversion and Polymerization Shrinkage of Low Shrinkage Bulk-Fill Resin Composites
    Haidy N. Salem, Sherif M. Hefnawy, Shaymaa M. Nagi
    Contemporary Clinical Dentistry.2019; 10(3): 465.     CrossRef
  • Bulk-Fill Composites: Effectiveness of Cure With Poly- and Monowave Curing Lights and Modes
    JK Gan, AU Yap, JW Cheong, N Arista, CBK Tan
    Operative Dentistry.2018; 43(2): 136.     CrossRef
  • Depth of cure of bulk fill resin composites: A systematic review
    Renally Bezerra Wanderley Lima, Cristhian Camilo Madrid Troconis, Marina Barrêto Pereira Moreno, Fabián Murillo‐Gómez, Mario Fernando De Goes
    Journal of Esthetic and Restorative Dentistry.2018; 30(6): 492.     CrossRef
  • Influence of Bulk Thickness, Curing Time, and Curing Unit Type on the Microhardness of Different-Viscosity Bulk-Fill Composites
    M. Saipullaev, U. Erdemir, E. Yildiz
    Mechanics of Composite Materials.2018; 54(5): 675.     CrossRef
  • Color of bulk‐fill composite resin restorative materials
    Çağatay Barutcigil, Kubilay Barutcigil, Mehmet Mustafa Özarslan, Ayşe Dündar, Burak Yilmaz
    Journal of Esthetic and Restorative Dentistry.2018;[Epub]     CrossRef
  • Incremental and Bulk-fill Techniques With Bulk-fill Resin Composite in Different Cavity Configurations
    S-H Han, S-H Park
    Operative Dentistry.2018; 43(6): 631.     CrossRef
  • Surface changes of various bulk‐fill resin‐based composites after exposure to different food‐simulating liquid and beverages
    Saijai Tanthanuch, Boonlert Kukiattrakoon, Kasidit Eiam‐O‐Pas, Kan Pokawattana, Nicha Pamanee, Wichachon Thongkamkaew, Asok Kochatung
    Journal of Esthetic and Restorative Dentistry.2018; 30(2): 126.     CrossRef
  • Impact of 35% Hydrogen Peroxide on Color and Translucency Changes in Enamel and Dentin
    Rebeca Pereira de Menezes, Paula Damasceno Silva, Pollyana Caldeira Leal, André Luis Faria-e-Silva
    Brazilian Dental Journal.2018; 29(1): 88.     CrossRef
  • A comparative study of bulk-fill composites: degree of conversion, post-gel shrinkage and cytotoxicity
    Flávia Gonçalves, Luiza Mello de Paiva Campos, Ezequias Costa Rodrigues-Júnior, Fabrícia Viana Costa, Pamela Adeline Marques, Carlos Eduardo Francci, Roberto Ruggiero Braga, Letícia Cristina Cidreira Boaro
    Brazilian Oral Research.2018;[Epub]     CrossRef
  • Comparison of cytotoxicity test models for evaluating resin-based composites
    SM Lim, AUJ Yap, CSL Loo, J Ng, CY Goh, CHL Hong, WS Toh
    Human & Experimental Toxicology.2017; 36(4): 339.     CrossRef
  • Comparison of Internal Adaptation in Class II Bulk-fill Composite Restorations Using Micro-CT
    SH Han, SH Park
    Operative Dentistry.2017; 42(2): 203.     CrossRef
  • Color stability of bulk-fill and incremental-fill resin-based composites polished with aluminum-oxide impregnated disks
    Uzay Koc-Vural, Ismail Baltacioglu, Pinar Altinci
    Restorative Dentistry & Endodontics.2017; 42(2): 118.     CrossRef
  • Evaluation of bulk-fill resin composite on the shear bond strength of metal brackets
    Mi-Gyoung Park
    Korean Journal of Dental Materials.2017; 44(2): 95.     CrossRef
  • Effect of water storage on flexural strength of silorane and methacrylate-based composite resins
    Narges Panahandeh, Hassan Torabzadeh, Hani Naderi, Seyedeh Mahsa Sheikh-Al-Eslamian
    Restorative Dentistry & Endodontics.2017; 42(4): 309.     CrossRef
  • Shear bond strength of different dentin substitute restorative materials to dentin of primary teeth
    Faika ABDELMEGID, Fouad SALAMA, Nawaf ALBOGAMI, Muhannad ALBABTAIN, Abdulkareem ALQAHTANI
    Dental Materials Journal.2016; 35(5): 782.     CrossRef
  • Internal adaptation of resin composites at two configurations: Influence of polymerization shrinkage and stress
    Seung-Hoon Han, Alireza Sadr, Junji Tagami, Sung-Ho Park
    Dental Materials.2016; 32(9): 1085.     CrossRef
  • Effect of a broad-spectrum LED curing light on the Knoop microhardness of four posterior resin based composites at 2, 4 and 6-mm depths
    Maan M. ALShaafi, Thomas Haenel, Braden Sullivan, Daniel Labrie, Mohammed Q. Alqahtani, Richard B. Price
    Journal of Dentistry.2016; 45: 14.     CrossRef
  • Influence of increment thickness on light transmission, degree of conversion and micro hardness of bulk fill composites
    Sufyan Garoushi, Pekka Vallittu, Akikazu Shinya, Lippo Lassila
    Odontology.2016; 104(3): 291.     CrossRef
  • Criteria for clinical translucency evaluation of direct esthetic restorative materials
    Yong-Keun Lee
    Restorative Dentistry & Endodontics.2016; 41(3): 159.     CrossRef
  • The effect of different drinks on the color stability of different restorative materials after one month
    Neslihan Tekçe, Safa Tuncer, Mustafa Demirci, Merve Efe Serim, Canan Baydemir
    Restorative Dentistry & Endodontics.2015; 40(4): 255.     CrossRef
  • 301 View
  • 5 Download
  • 56 Crossref
Close layer
The effect of resin thickness on polymerization characteristics of silorane-based composite resin
Sung-Ae Son, Hyoung-Mee Roh, Bock Hur, Yong-Hoon Kwon, Jeong-Kil Park
Restor Dent Endod 2014;39(4):310-318.   Published online September 5, 2014
DOI: https://doi.org/10.5395/rde.2014.39.4.310
AbstractAbstract PDFPubReaderePub
Objectives

This study examined the influence of the resin thickness on the polymerization of silorane- and methacrylate-based composites.

Materials and Methods

One silorane-based (Filtek P90, 3M ESPE) and two methacrylate-based (Filtek Z250 and Z350, 3M ESPE) composite resins were used. The number of photons were detected using a photodiode detector at the different thicknesses (thickness, 1, 2 and 3 mm) specimens. The microhardness of the top and bottom surfaces was measured (n = 15) using a Vickers hardness with 200 gf load and 15 sec dwell time conditions. The degree of conversion (DC) of the specimens was determined using Fourier transform infrared spectroscopy (FTIR). Scratched powder of each top and bottom surface of the specimen dissolved in ethanol for transmission FTIR spectroscopy. The refractive index was measured using a Abbe-type refractometer. To measure the polymerization shrinkage, a linometer was used. The results were analyzed using two-way ANOVA and Tukey's test at p < 0.05 level.

Results

The silorane-based resin composite showed the lowest filler content and light attenuation among the specimens. P90 showed the highest values in the DC and the lowest microhardness at all depth. In the polymerization shrinkage, P90 showed a significantly lower shrinkage than the rest two resin products (p < 0.05). P90 showed a significantly lower refractive index than the remaining two resin products (p < 0.05).

Conclusions

DC, microhardness, polymerization rate and refractive index linearly decreased as specimen thickness linearly increased. P90 showed much less polymerization shrinkage compared to other specimens. P90, even though achieved the highest DC, showed the lowest microhardness and refractive index.

Citations

Citations to this article as recorded by  
  • A Year-Long Comparison of Dentin Bond Strength Using the Co-Curing Technique and Conventional Adhesive Application
    Josipa Vukelja Bosnić, Eva Klarić, Ivan Sever, Zrinka Tarle
    Journal of Composites Science.2025; 9(3): 131.     CrossRef
  • The influence of inorganic fillers on the light transmission through resin-matrix composites during the light-curing procedure: an integrative review
    Rita Fidalgo-Pereira, Daniela Carpio, Orlanda Torres, Oscar Carvalho, Filipe Silva, Bruno Henriques, Mutlu Özcan, Júlio C. M. Souza
    Clinical Oral Investigations.2022; 26(9): 5575.     CrossRef
  • Conversion, Polymerization Shrinkage, Heat Generation, and Depth of Cure of Novel Dental Composites
    Saad Liaqat, Humaira Jabeen
    Pakistan BioMedical Journal.2022;[Epub]     CrossRef
  • Effect of Polymerization on the Color of Resin Composites
    B Korkut, G Dokumacigil, N Murat, PY Atali, B Tarcin, GB Gocmen
    Operative Dentistry.2022; 47(5): 514.     CrossRef
  • Shrinkage Stress and Temperature Variation in Resin Composites Cured via Different Photoactivation Methods: Insights for Standardisation of the Photopolymerisation
    Guilherme dos Santos Sousa, Gabriel Felipe Guimarães, Edilmar Marcelino, José Eduardo Petit Rodokas, Arilson José de Oliveira Júnior, Ivana Cesarino, Alcides Lopes Leão, Carla dos Santos Riccardi, Mohammad Arjmand, Rafael Plana Simões
    Polymers.2021; 13(13): 2065.     CrossRef
  • Effect of the incorporation of silica blow spun nanofibers containing silver nanoparticles (SiO2/Ag) on the mechanical, physicochemical, and biological properties of a low-viscosity bulk-fill composite resin
    Soraya Salmanzadeh Ardestani, Roberta Ferreti Bonan, Mariaugusta Ferreira Mota, Rosiane Maria da Costa Farias, Romualdo Rodrigues Menezes, Paulo Rogério Ferreti Bonan, Panmella Pereira Maciel, Flávia Maria de Moraes Ramos-Perez, André Ulisses Dantas Batis
    Dental Materials.2021; 37(10): 1615.     CrossRef
  • Light-Curing Units, Photoinitiators System, and Monomers on Physico-Mechanical Properties of Experimental Composite Resins
    Gustavo Furlan da Silva Prezotto, Weverteon Soares de Lima, Rafael Pino Vitti, Ariel Farias da Silva, Mário Alexandre Coelho Sinhoreti, William Cunha Brandt
    Matéria (Rio de Janeiro).2020;[Epub]     CrossRef
  • Influence of Different Cordless Light-emitting-diode Units and Battery Levels on Chemical, Mechanical, and Physical Properties of Composite Resin
    IO Cardoso, AC Machado, DNR Teixeira, FC Basílio, A Marletta, PV Soares
    Operative Dentistry.2020; 45(4): 377.     CrossRef
  • Shrinkage in composites: An enigma
    Dhakshinamoorthy Malarvizhi, Arumugam Karthick, NewBegin Selvakumar Gold Pearlin Mary, Alagarsamy Venkatesh
    Journal of International Oral Health.2019; 11(5): 244.     CrossRef
  • Development and status of resin composite as dental restorative materials
    Xinxuan Zhou, Xiaoyu Huang, Mingyun Li, Xian Peng, Suping Wang, Xuedong Zhou, Lei Cheng
    Journal of Applied Polymer Science.2019;[Epub]     CrossRef
  • Effect of the Time of Salivary Contamination during Light Curing on Degree of Conversion and Microhardness of a Restorative Composite Resin
    Rasoul Sahebalam, Alireza Boruziniat, Fahimeh Mohammadzadeh, Abdolrasoul Rangrazi
    Biomimetics.2018; 3(3): 23.     CrossRef
  • LIGHT POLYMERIZATION OF PHOTO-CURED COMPOSITE MATERIALS: MODERN APPROACHES AND APPLICATION PECULIARITIES
    O. A. Udod, V. H. Tsentilo, O. M. Adamenko
    Bulletin of Problems Biology and Medicine.2018; 2(4): 72.     CrossRef
  • Resistencia a la compresión del ionómero de vidrio y de la resina compuesta. Estudio in vitro
    Sara Blanco Lerech, Sebastián Frías Tarón, Arnulfo Tarón Dunoyer, José María Bustillo Arrieta, Antonio Díaz Caballero
    Revista Odontológica Mexicana.2017; 21(2): 109.     CrossRef
  • Compressive strength of glass ionomer and composite resin. In vitro study
    Sara Blanco Lerech, Sebastián Frías Tarón, Arnulfo Tarón Dunoyer, José María Bustillo Arrieta, Antonio Díaz Caballero
    Revista Odontológica Mexicana.2017; 21(2): e107.     CrossRef
  • Influência de três modos de fotopolimerização sobre a microdureza de três resinas compostas
    Andréa Cristina Schneider, Márcio José Mendonça, Roberta Bento Rodrigues, Priscilla do Monte Ribeiro Busato, Veridiana Camilotti
    Polímeros.2016; 26(spe): 37.     CrossRef
  • Vickers microhardness comparison of 4 composite resins with different types of filler.
    Rene García-Contreras, Rogelio Scougall-Vilchis, Laura Acosta-Torres, Concepción Arenas-Arrocena, Rigoberto García-Garduño, Javier de la Fuente-Hernández
    Journal Oral Of Research.2015; 4(5): 313.     CrossRef
  • 305 View
  • 1 Download
  • 16 Crossref
Close layer
Surface microhardness of three thicknesses of mineral trioxide aggregate in different setting conditions
Noushin Shokouhinejad, Leila Jafargholizadeh, Mehrfam Khoshkhounejad, Mohammad Hossein Nekoofar, Maryam Raoof
Restor Dent Endod 2014;39(4):253-257.   Published online August 20, 2014
DOI: https://doi.org/10.5395/rde.2014.39.4.253
AbstractAbstract PDFPubReaderePub
Objectives

This study aimed to compare the surface microhardness of mineral trioxide aggregate (MTA) samples having different thicknesses and exposed to human blood from one side and with or without a moist cotton pellet on the other side.

Materials and Methods

Ninety cylindrical molds with three heights of 2, 4, and 6 mm were fabricated. In group 1 (dry condition), molds with heights of 2, 4, and 6 mm (10 molds of each) were filled with ProRoot MTA (Dentsply Tulsa Dental), and the upper surface of the material was not exposed to any additional moisture. In groups 2 and 3, a distilled water- or phosphate-buffered saline (PBS)-moistened cotton pellet was placed on the upper side of MTA, respectively. The lower side of the molds in all the groups was in contact with human blood-wetted foams. After 4 day, the Vickers microhardness of the upper surface of MTA was measured.

Results

In the dry condition, the 4 and 6 mm-thick MTA samples showed significantly lower microhardness than the 2 mm-thick samples (p = 0.003 and p = 0.001, respectively). However, when a distilled water- or PBS-moistened cotton pellet was placed over the MTA, no significant difference was found between the surface microhardness of samples having the abovementioned three thicknesses of the material (p = 0.210 and p = 0.112, respectively).

Conclusions

It could be concluded that a moist cotton pellet must be placed over the 4 to 6 mm-thick MTA for better hydration of the material. However, this might not be necessary when 2 mm-thick MTA is used.

Citations

Citations to this article as recorded by  
  • MTA as modulator of periapical tissue healing in rat molar: A histological study
    Christian Khoswanto, Ira Kusuma Dewi
    Journal of Oral Biology and Craniofacial Research.2024; 14(2): 201.     CrossRef
  • An Update on Endodontic Microsurgery of Mandibular Molars: A Focused Review
    Sun Mi Jang, Euiseong Kim, Kyung-San Min
    Medicina.2021; 57(3): 270.     CrossRef
  • Assessment of Mineral Trioxide Aggregate Setting in Simulated Root Canal with Different Root Canal Wall Thickness: In Vitro Study
    Radovan Žižka, Radim Čtvrtlík, Jan Tomáštík, Kamila Fačevicová, Ondřej Vencálek, Jiří Šedý, David Marinčák
    Applied Sciences.2021; 11(4): 1727.     CrossRef
  • Evaluation of the bioactivity of fluoride‐enriched mineral trioxide aggregate on osteoblasts
    S. Proksch, J. Brossart, K. Vach, E. Hellwig, M. J. Altenburger, L. Karygianni
    International Endodontic Journal.2018; 51(8): 912.     CrossRef
  • Antimicrobial and antibiofilm activities of MTA supplemented with bismuth lipophilic nanoparticles
    Rene HERNANDEZ-DELGADILLO, Casiano DEL ANGEL-MOSQUEDA, Juan Manuel SOLÍS-SOTO, Silvia MUNGUIA-MORENO, Nayely PINEDA-AGUILAR, Rosa Isela SÁNCHEZ-NÁJERA, Shankararaman CHELLAM, Claudio CABRAL-ROMERO
    Dental Materials Journal.2017; 36(4): 503.     CrossRef
  • Carbohydrate-electrolyte drinks exhibit risks for human enamel surface loss
    Mary Anne Sampaio de Melo, Vanara Florêncio Passos, Juliana Paiva Marques Lima, Sérgio Lima Santiago, Lidiany Karla Azevedo Rodrigues
    Restorative Dentistry & Endodontics.2016; 41(4): 246.     CrossRef
  • 204 View
  • 1 Download
  • 6 Crossref
Close layer
Power density of various light curing units through resin inlays with modified layer thickness
Sung-Ok Hong, Yonghui Oh, Jeong-Bum Min, Jin-Woo Kim, Bin-Na Lee, Yun-Chan Hwang, In-Nam Hwang, Won-Mann Oh, Hoon-Sang Chang
Restor Dent Endod 2012;37(3):130-135.   Published online August 29, 2012
DOI: https://doi.org/10.5395/rde.2012.37.3.130
AbstractAbstract PDFPubReaderePub
Objectives

The purpose of this study was to enhance curing light penetration through resin inlays by modifying the thicknesses of the dentin, enamel, and translucent layers.

Materials and Methods

To investigate the layer dominantly affecting the power density of light curing units, resin wafers of each layer with 0.5 mm thickness were prepared and power density through resin wafers was measured with a dental radiometer (Cure Rite, Kerr). The dentin layer, which had the dominant effect on power density reduction, was decreased in thickness from 0.5 to 0.1 mm while thickness of the enamel layer was kept unchanged at 0.5 mm and thickness of the translucent layer was increased from 0.5 to 0.9 mm and vice versa, in order to maintain the total thickness of 1.5 mm of the resin inlay. Power density of various light curing units through resin inlays was measured.

Results

Power density measured through 0.5 mm resin wafers decreased more significantly with the dentin layer than with the enamel and translucent layers (p < 0.05). Power density through 1.5 mm resin inlays increased when the dentin layer thickness was reduced and the enamel or translucent layer thickness was increased. The highest power density was recorded with dentin layer thickness of 0.1 mm and increased translucent layer thickness in all light curing units.

Conclusions

To enhance the power density through resin inlays, reducing the dentin layer thickness and increasing the translucent layer thickness would be recommendable when fabricating resin inlays.

Citations

Citations to this article as recorded by  
  • Effects of layering technique on the shade of resin overlays and the microhardness of dual cure resin cement
    Hoon-Sang Chang, Sung-Ok Hong
    Brazilian Oral Research.2014;[Epub]     CrossRef
  • Early Hardness and Shear Bond Strength of Dual-cure Resin Cement Light Cured Through Resin Overlays With Different Dentin-layer Thicknesses
    H-S Chang, J-W Kim
    Operative Dentistry.2014; 39(4): 398.     CrossRef
  • Light curing of dual cure resin cement
    Hoon-Sang Chang
    Restorative Dentistry & Endodontics.2013; 38(4): 266.     CrossRef
  • 197 View
  • 1 Download
  • 3 Crossref
Close layer
Basic Research
Effect of film thickness of resin cement on bonding efficiency in indirect composite restoration
Sang-Hyuck Lee, Gi-Woon Choi, Kyung-Kyu Choi
J Korean Acad Conserv Dent 2010;35(2):69-79.   Published online March 31, 2010
DOI: https://doi.org/10.5395/JKACD.2010.35.2.069
AbstractAbstract PDFPubReaderePub

The purpose of this study was to evaluate the effect of film thickness of various resin cements on bonding efficiency in indirect composite restoration by measurement of microtensile bond strength, polymerization shrinkage, flexural strength and modulus, fractographic FE-SEM analysis. Experimental groups were divided according to film thickness (< 50 µm-control, 50 µm-T50, 100 µm-T100, 150 µm-T150) using composite-based resin cements (Variolink II, Duo-Link) and adhesive-based resin cements (Panavia F, Rely X Unicem). The data was analyzed using ANOVA and Duncan's multiple comparison test (p < 0.05).

The results were as follows;

Variolink II showed higher microtensile bond strength than that of adhesive-based resin cements in all film thickness (p < 0.05) but Duo-Link did not show significant difference except control group (p < 0.05).

Microtensile bond strength of composite-based resin cements were decreased significantly according to increasing film thickness (p < 0.05) but adhesive-based resin cements did not show significant difference among film thickness (p > 0.05).

Panavia F showed significantly lower polymerization shrinkage than other resin cements (p < 0.05).

Composite-based resin cements showed significantly higher flexural strength and modulus than adhesive-based resin cements (p < 0.05).

FE-SEM examination showed uniform adhesive layer and well developed resin tags in composite-based resin cements but unclear adhesive layer and poorly developed resin tags in adhesive-based resin cements. In debonded surface examination, composite-based resin cements showed mixed failures but adhesive-based resin cements showed adhesive failures.

Citations

Citations to this article as recorded by  
  • Full mapping tensile bond strength of luting in search for differences due to centripetal curing shrinkage
    José C. de la Macorra, Beatriz Romero
    Dental Materials.2022; 38(4): e69.     CrossRef
  • 171 View
  • 2 Download
  • 1 Crossref
Close layer
Original Articles
A comparative study on radiopacity of root canal sealers
Tae-Min Kim, Seo-Kyoung Kim, In-Nam Hwang, Yun-Chan Hwang, Byung-Cheol Kang, Suk-Ja Yoon, Jae-Seo Lee, Won-Mann Oh
J Korean Acad Conserv Dent 2009;34(1):61-68.   Published online January 31, 2009
DOI: https://doi.org/10.5395/JKACD.2009.34.1.061
AbstractAbstract PDFPubReaderePub

This study was performed to assess the radiopacity of a variety of root canal sealers according to the specification concerning root canal sealers.

Ten materials including Tubli-Seal™, Kerr Pulp Canal Sealer™, AH 26®, AH plus®, AH plus jet™, Ad sea l™, Sealapex™, NOGENOL™, ZOB seal™, Epiphany™ and dentin were evaluated in this study. In the first part, densitometric reading of an each step of aluminum step wedge on occlusal film was performed at different voltage and exposure time. In the second part, ten specimens were radiographed simultaneously with an aluminum step wedges on the occlusal films under decided condition. The mean radiographic den sity values of the materials were transformed into radiopacity expressed equivalent thickness of aluminum (mm Al).

The following results were obtained.

1. Among the various conditions, the appropriate voltage and exposure time that meet the requirement density was 60 kVp at 0.2 s

2. All of the materials had greater radiopacity than 3 mm Al requirement of ANSI/ADA specification No. 57 (2000) and ISO No. 6876 (2001) standards.

3. The radiopacity of materials increased as thickness of materials increased.

4. The mm Al value of each specimen at 1mm in thickness has a significant difference in the statistics.

It suggests that root canal sealers have a sufficient radiopacity that meet the requirement.

Citations

Citations to this article as recorded by  
  • Evaluation of radiopacity and discriminability of various fiber reinforced composite posts
    Eun-Hye Lee, Hang-Moon Choi, Se-Hee Park, Jin-Woo Kim, Kyung-Mo Cho
    Journal of Korean Academy of Conservative Dentistry.2010; 35(3): 188.     CrossRef
  • 160 View
  • 2 Download
  • 1 Crossref
Close layer
Is an oxygen inhibition layer essential for the interfacial bonding between resin composite layers?
Sun-Young Kim, Byeong-Hoon Cho, Seung-Ho Baek, In-Bog Lee
J Korean Acad Conserv Dent 2008;33(4):405-412.   Published online July 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.4.405
AbstractAbstract PDFPubReaderePub

This study was aimed to investigate whether an oxygen inhibition layer (OIL) is essential for the interfacial bonding between resin composite layers or not.

A composite (Z-250, 3M ESPE) was filled in two layers using two aluminum plate molds with a hole of 3.7 mm diameter. The surface of first layer of cured composite was prepared by one of five methods as followings, thereafter second layer of composite was filled and cured: Group 1 - OIL is allowed to remain on the surface of cured composite; Group 2 - OIL was removed by rubbing with acetone-soaked cotton; Group 3 - formation of the OIL was inhibited using a Mylar strip; Group 4 - OIL was covered with glycerin and light-cured; Group 5 (control) - composite was bulk-filled in a layer. The interfacial shear bond strength between two layers was tested and the fracture modes were observed. To investigate the propagation of polymerization reaction from active area having a photo-initiator to inactive area without the initiator, a flowable composite (Aelite Flow) or an adhesive resin (Adhesive of ScotchBond Multipurpose) was placed over an experimental composite (Exp_Com) which does not include a photoinitiator and light-cured. After sectioning the specimen, the cured thickness of the Exp_Com was measured.

The bond strength of group 2, 3 and 4 did not show statistically significant difference with group 1. Groups 3 and 4 were not statistically significant different with control group 5. The cured thicknesses of Exp_Com under the flowable resin and adhesive resin were 20.95 (0.90) um and 42.13 (2.09), respectively.

Citations

Citations to this article as recorded by  
  • Finishing and Polishing of Composite Restoration: Assessment of Knowledge, Attitude and Practice Among Various Dental Professionals in India
    Sankar Vishwanath, Sadasiva Kadandale, Senthil kumar Kumarappan, Anupama Ramachandran, Manu Unnikrishnan, Honap manjiri Nagesh
    Cureus.2022;[Epub]     CrossRef
  • Evaluation of Surface Roughness of Composite, Compomer and Carbomer After Curing Through Mylar Strip and Glycerin: A Comparative Study
    Asli Topaloglu-Ak, Dilara Çayırgan, Melisa Uslu
    Journal of Advanced Oral Research.2020; 11(1): 12.     CrossRef
  • Effect of glycerin on the surface hardness of composites after curing
    Hyun-Hee Park, In-Bog Lee
    Journal of Korean Academy of Conservative Dentistry.2011; 36(6): 483.     CrossRef
  • 187 View
  • 1 Download
  • 3 Crossref
Close layer
Fracture resistance of the three types of undermined cavity filled with composite resin
Hoon-Soo Choi, Dong-Hoon Shin
J Korean Acad Conserv Dent 2008;33(3):177-183.   Published online May 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.3.177
AbstractAbstract PDFPubReaderePub

It was reported that esthetic composite resin restoration reinforces the strength of remaining tooth structure with preserving the natural tooth structure. However, it is unknown how much the strength would be recovered. The purpose of this study was to compare the fracture resistance of three types of undermined cavity filled with composite resin with that of non-cavitated natural tooth.

Forty sound upper molars were allocated randomly into four groups of 10 teeth. After flattening occlusal enamel, undermined cavities were prepared in thirty teeth to make three types of specimens with various thickness of occlusal structure (Group 1 ~ 3). All the cavity have the 5 mm width mesiodistally and 7 mm depth bucco-lingually. Another natural 10 teeth (Group 4) were used as a control group. Teeth in group 1 have remaining occlusal structure about 1 mm thickness, which was composed of mainly enamel and small amount of dentin. In Group 2, remained thickness was about 1.5 mm, including 0.5 mm thickness dentin. In Group 3, thickness was about 2.0 mm, including 1 mm thickness dentin. Every effort was made to keep the remaining dentin thickness about 0.5 mm from the pulp space in cavitated groups. All the thickness was evaluated with radiographic Length Analyzer program.

After acid etching with 37% phosphoric acid, one-bottle adhesive (Single Bond™, 3M/ESPE, USA) was applied following the manufacturer's recommendation and cavities were incrementally filled with hybrid composite resin (Filtek Z-250™, 3M/ESPE, USA). Teeth were stored in distilled water for one day at room temperature, after then, they were finished and polished with Sof-Lex system.

All specimens were embedded in acrylic resin and static load was applied to the specimens with a 3 mm diameter stainless steel rod in an Universal testing machine and cross-head speed was 1 mm/min. Maximum load in case of fracture was recorded for each specimen.

The data were statistically analyzed using one-way analysis of variance (ANOVA) and a Tukey test at the 95% confidence level.

The results were as follows:

Fracture resistance of the undermined cavity filled with composite resin was about 75% of the natural tooth.

No significant difference in fracture loads of composite resin restoration was found among the three types of cavitated groups.

Within the limits of this study, it can be concluded the fracture resistance of the undermined cavity filled with composite resin was lower than that of natural teeth, however remaining tooth structure may be supported and saved by the reinforcement with adhesive restoration, even if that portion consists of mainly enamel and a little dentin structure.

Citations

Citations to this article as recorded by  
  • Fracture resistance of crown-root fractured teeth repaired with dual-cured composite resin and horizontal posts
    Seok-Woo Chang, Yong-Keun Lee, Seung-Hyun Kyung, Hyun-Mi Yoo, Tae-Seok Oh, Dong-Sung Park
    Journal of Korean Academy of Conservative Dentistry.2009; 34(5): 383.     CrossRef
  • 210 View
  • 3 Download
  • 1 Crossref
Close layer
Polymerization of dual cured composites by different thickness
Yun Ju Kim, Myoung Uk Jin, Sung Kyo Kim, Tae-Yub Kwon, Young Kyung Kim
J Korean Acad Conserv Dent 2008;33(3):169-176.   Published online May 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.3.169
AbstractAbstract PDFPubReaderePub

The purpose of this study was to evaluate the effect of thickness, filling methods and curing methods on the polymerization of dual cured core materials by means of microhardness test.

Two dual cured core materials, MultiCore Flow (Ivoclar Vivadent AG, Schaan, Liechtenstein) and Bis-Core (Bisco Inc., Schaumburg, IL, USA) were used in this study. 2 mm (bulky filled), 4 mm (bulky filled), 6 mm (bulky and incrementally filled) and 8 mm (bulky and incrementally filled)-thickness specimens were prepared with light cure or self cure mode. After storage at 37℃ for 24 hours, the Knoop hardness values (KHN) of top and bottom surfaces were measured and the microhardness ratio of top and bottom surfaces was calculated. The data were analyzed using one-way ANOVA and Scheffe multiple comparison test, with α = 0.05.

The effect of thickness on the polymerization of dual cured composites showed material specific results. In 2, 4 and 6 mm groups, the KHN of two materials were not affected by thickness. However, in 8 mm group of MultiCore Flow, the KHN of the bottom surface was lower than those of other groups (p < 0.05). The effect of filling methods on the polymerization of dual cured composites was different by their thickness or materials. In 6 mm thickness, there was no significant difference between bulk and incremental filling groups. In 8 mm thickness, Bis-Core showed no significant difference between groups. However, in MultiCore Flow, the microhardness ratio of bulk filling group was lower than that of incremental filling group (p < 0.05). The effect of curing methods on the polymerization of dual cured composites showed material specific results. In Bis-Core, the KHN of dual cured group were higher than those of self cured group at both surfaces (p < 0.05). However, in MultiCore Flow, the results were not similar at both surfaces. At the top surface, dual cured group showed higher KHN than that of self cured group (p < 0.05). However, in the bottom surface, dual cured group showed lower value than that of self cured group (p < 0.05).

Citations

Citations to this article as recorded by  
  • Effect of curing modes on micro-hardness of dual-cure resin cements
    Ki-Deok Lee, Se-Hee Park, Jin-Woo Kim, Kyung-Mo Cho
    Journal of Korean Academy of Conservative Dentistry.2011; 36(2): 132.     CrossRef
  • 186 View
  • 2 Download
  • 1 Crossref
Close layer
The effect of adhesive thickness on microtensile bond strength to the cavity wall
Hwa-Eon Lee, Hyeon-Cheol Kim, Bock Hur, Jeong-Kil Park
J Korean Acad Conserv Dent 2007;32(1):9-18.   Published online January 31, 2007
DOI: https://doi.org/10.5395/JKACD.2007.32.1.009
AbstractAbstract PDFPubReaderePub

The purposes of this study were to examine the variability of adhesive thickness on the different site of the cavity wall when used total-etch system without filler and simplified self-etch system with filler and to evaluate the relationship between variable adhesive thickness and microtensile bond strength to the cavity wall.

A class I cavity in six human molars was prepared to expose all dentinal walls. Three teeth were bonded with a filled adhesive, Clearfil™ SE bond and the other three teeth were bonded with unfilled adhesives, Scotchbond™ Multi Purpose. Morphology and thickness of adhesive layer were examined using fluorescence microscope. Bonding agent thickness was measured at three points along the axial cavity wall, edge of cavity margin (rim), halfway down each cavity wall (hlf), internal angle of the cavity (ang). After reproducing the adhesive thickness at rim, hlf and ang, micro-tensile bond strength were evaluated.

For both bonding agents, adhesive thickness of ang was significantly thicker than that of rim and hlf (P < 0.05). As reproduced the adhesive thickness, microtensile bond strength was increased as adhesive thickness was increased in two bonding agents.

Adhesive thickness of internal angle of the cavity was significantly thicker than that of the cavity margin and the halfway cavity wall for both bonding agents. Microtensile bond strength of the thick adhesive layer at the internal angle of the cavity was higher than that of the thin adhesive layer at the cavity margin and the halfway cavity in the two bonding systems.

Citations

Citations to this article as recorded by  
  • Bond strength of a 3-step total-etch bonding system to dentine – An improved approach
    H. Hassan Elnadif, W. Palin, M.A. Hadis, B.W. Darvell
    Dental Materials.2025;[Epub]     CrossRef
  • Evaluation of bonding effectiveness of a self-etch and an etch-and-rinse adhesive resin to un-treated and Er:Yag laser treated dentin using mini-interfacial fracture toughness test
    Marjan Behroozibakhsh, Sotoudeh Davaie, Abbas Monzavi, Tayebeh Abazari, Sima Shahabi, Maryam Pirmoradian
    Journal of Adhesion Science and Technology.2019; 33(11): 1201.     CrossRef
  • The effect of Er,Cr:YSGG irradiation on microtensile bond strength of composite resin restoration
    Jeong-Hye Son, Hyeon-Cheol Kim, Bock Hur, Jeong-Kil Park
    Journal of Korean Academy of Conservative Dentistry.2010; 35(2): 134.     CrossRef
  • 177 View
  • 1 Download
  • 3 Crossref
Close layer
The effect of marginal microleakge according to thickness of flowable resin
Gi-Gang Song, Young-Gon Cho
J Korean Acad Conserv Dent 2005;30(5):363-371.   Published online September 30, 2005
DOI: https://doi.org/10.5395/JKACD.2005.30.5.363
AbstractAbstract PDFPubReaderePub

This study investigated the effect of thickness of flowable resin lining on marginal leakage in class II composite restorations. 80 experimental teeth were prepared with class II preparations with enamel margin or dentin margin. Each group was devided into four groups according to flowable resin lining thickness ; Control group - no flowable resin lining, Group 1 - 0.5 mm flowable resin lining, Group 2 - 1 mm flowable resin lining, Group 3 - 2 mm flowable resin lining. The cavities were restored using Scotchbond Multi-Purpose adhesive system, Filtek Flow and Filtek Z 250 composite resin.

Following one day storage in distilled water, the restored teeth were thermocycled for 500 cycles and immersed in 2% methylene blue for 24 hours.

The results of this study were as follows:

1. Ranking of mean microleakage scores at the enamel margins was Group 1 < Control = Group 2 < Group 3. The microleakage of Group 3 was significantly higher than that of Control, Group 1 and Group 2 (p < 0.05).

2. Ranking of mean microleakage scores at the dentin margins was Group 1 < Group 2 < Control < Group 3. The microleakage of Group 3 was significantly higher than that of Control, Group 1 (p < 0.05).

3. Compared with microleakage between the enamel and dentin margins, enamel margin group were significantly lower than dentin margin group.

  • 91 View
  • 0 Download
Close layer
Surface hardness of the dental composite cured by light that penetrate tooth structure according to thickness of tooth structure, light intensity and curing time
Soo-Kyung Cho, Dong-Jun Kim, Yun-Chan Hwang, Won-Mann Oh, In-Nam Hwang
J Korean Acad Conserv Dent 2005;30(2):128-137.   Published online March 31, 2005
DOI: https://doi.org/10.5395/JKACD.2005.30.2.128
AbstractAbstract PDFPubReaderePub

In this study we measured the amount of light energy that was projected through the tooth material and analyzed the degree of polymerization by measuring the surface hardness of composites. For polymerization, Optilux 501 (Demetron, USA) with two types of light guide was used: a 12 mm diameter light guide with 840 mW/cm2 light intensity and a 7 mm diameter turbo light guide with 1100 mW/cm2.

Specimens were divided into three groups according to thickness of penetrating tooth (1 mm, 2 mm, 0 mm). Each group was further divided into four subgroups according to type of light guide and curing time (20 seconds, 40 seconds). Vickers'hardness was measured by using a microhardness tester. In 0 mm and 1 mm penetrating tooth group, which were polymerized by a turbo light guide for 40 seconds, showed the highest hardness values. The specimens from 2 mm penetrating tooth group, which were polymerized for 20 seconds, demonstrated the lowest hardness regardless of the types of light guides (p < 0.05).

The results of this study suggest that, when projecting tooth material over a specified thickness, the increase of polymerization will be limited even if light intensity or curing time is increased.

Citations

Citations to this article as recorded by  
  • Comparison of Flexural Strength According to Post-Curing Treatment Time of Cast Resin Printed by 3D Printing Method
    Jihyun Kim
    International Journal of Clinical Preventive Dentistry.2024; 20(4): 170.     CrossRef
  • Comparison of Surface Microhardness of the Flowable Bulk-Fill Resin and the Packable Bulk-Fill Resin according to Light Curing Time and Distance
    Hyung-Min Kim, Moon-Jin Jeong, Hee-Jung Lim, Do-Seon Lim
    Journal of Dental Hygiene Science.2023; 23(2): 123.     CrossRef
  • Comparison of polymerization by time of light curing for dental 3D printing
    Dong-Yeon Kim, Gwang-Young Lee
    Journal of Korean Acedemy of Dental Technology.2022; 44(3): 76.     CrossRef
  • Comparative analysis of the flexural strength of provisional restorative resins using a digital light processing printer according to the post-curing method
    Young-Dae Park, Wol Kang
    Journal of Korean Acedemy of Dental Technology.2020; 42(4): 341.     CrossRef
  • 188 View
  • 1 Download
  • 4 Crossref
Close layer
The effect of hybrid layer thickness on microtensile bond strength of three-step and self-etching dentin adhesive systems
Hye-Jung Lee, Jeong-Kil Park, Bock Hur
J Korean Acad Conserv Dent 2003;28(6):491-497.   Published online November 30, 2003
DOI: https://doi.org/10.5395/JKACD.2003.28.6.491
AbstractAbstract PDFPubReaderePub

The purpose of this study was to evaluate the correlation between hybrid layer thickness and bond strength using confocal laser scanning microscope and microtensile bond strength test of two adhesive systems.

The dentin surface of human molars, sectioned to remove the enamel from the occlusal surface. Either Scotchbond Multi-Purpose(3M Dental Product, St. Paul, MN, U.S.A) or Clearfil SE Bond(Kuraray, Osaka, Japan) was bonded to the surface, and covered with resin-composite. The resin-bonded teeth were serially sliced perpendicular to the adhesive interface to measure the hybrid layer thickness by confocal laser scanning microscope. The specimen were trimmed to give a bonded cross-sectional surface area of 1mm2, then the micro-tensile bone test was performed at a crosshead speed of 1.0 mm/min. All fractured surfaces were also observed by stereomicroscope.

There was no significant differences in bond strengths the materials(p>0.05). However, the hybrid layers of three-step dentin adhesive system, SM, had significantly thicker than self-etching adhesive system, CS(p<0.05). Pearson's correlation coefficient showed no correlation between hybrid layer thickness and bond strengths(p>0.05). Bond strengths of dentin adhesive systems were not dependent on the thickness of hybrid layer.

Citations

Citations to this article as recorded by  
  • Techniques for the restorative management of localized and generalized tooth wear
    Alex Milosevic
    Dental Update.2023; 50(10): 842.     CrossRef
  • 187 View
  • 1 Download
  • 1 Crossref
Close layer

Restor Dent Endod : Restorative Dentistry & Endodontics
Close layer
TOP