Restorative Dentistry & Endodontics

Effects of a relined fiberglass post with conventional and self-adhesive resin cement: Wilton Lima dos Santos Junior, Marina Rodrigues Santi, Rodrigo Barros Esteves Lins, Luís Roberto Marcondes Martins; Restor Dent Endod 2024;49(2):e18. Published online March 27, 2024; DOI: https://doi.org/10.5395/rde.2024.49.e18

Objectives

This study was conducted to evaluate the mechanical properties of relined and non-relined fiberglass posts when cemented to root canal dentin using a conventional dual-cure resin cement or a self-adhesive resin cement.

Materials and Methods

Two types of resin cements were utilized: conventional and self-adhesive. Additionally, 2 cementation protocols were employed, involving relined and non-relined fiberglass posts. In total, 72 bovine incisors were cemented and subjected to push-out bond strength testing (n = 10) followed by failure mode analysis. The cross-sectional microhardness (n = 5) was assessed along the root canal, and interface analyses (n = 3) were conducted using scanning electron microscopy (SEM). Data from the push-out bond strength and cross-sectional microhardness tests were analyzed via 3-way analysis of variance and the Bonferroni post-hoc test (α = 0.05).

Results

For non-relined fiberglass posts, conventional resin cement exhibited higher push-out bond strength than self-adhesive cement. Relined fiberglass posts yielded comparable results between the resin cements. Type II failure was the most common failure mode for both resin cements, regardless of cementation protocol. The use of relined fiberglass posts improved the cross-sectional microhardness values for both cements. SEM images revealed voids and bubbles in the incisors with non-relined fiberglass posts.

Conclusions

Mechanical properties were impacted by the cementation protocol. Relined fiberglass posts presented the highest push-out bond strength and cross-sectional microhardness values, regardless of the resin cement used (conventional dual-cure or self-adhesive). Conversely, for non-relined fiberglass posts, the conventional dual-cure resin cement yielded superior results to the self-adhesive resin cement.

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Push-Out Bond Strength of Different Luting Cements Following Post Space Irrigation with 2% Chitosan: An In Vitro Study
Shimaa Rifaat, Ahmed Rahoma, Hind Muneer Alharbi, Sawsan Jamal Kazim, Shrouq Ali Aljuaid, Basmah Omar Alakloby, Faraz A. Farooqi, Noha Taymour
Prosthesis.2025; 7(1): 18. CrossRef

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Effectiveness and safety of rotary and reciprocating kinematics for retreatment of curved root canals: a systematic review of in vitro studies: Lucas Pinho Simões, Alexandre Henrique dos Reis-Prado, Carlos Roberto Emerenciano Bueno, Ana Cecília Diniz Viana, Marco Antônio Húngaro Duarte, Luciano Tavares Angelo Cintra, Cleidiel Aparecido Araújo Lemos, Francine Benetti; Restor Dent Endod 2022;47(2):e22. Published online April 6, 2022; DOI: https://doi.org/10.5395/rde.2022.47.e22

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Objectives

This systematic review (register-osf.io/wg7ba) compared the efficacy and safety of rotary and reciprocating kinematics in the removal of filling material from curved root canals.

Materials and Methods

Only in vitro studies evaluating both kinematics during retreatment were included. A systematic search (PubMed/MEDLINE, Scopus, and other databases, until January 2021), data extraction, and risk of bias analysis (Joanna Briggs Institute checklist) were performed. Efficacy in filling removal was the primary outcome.

Results

The search resulted in 2,795 studies, of which 15 were included. Efficacy was measured in terms of the remaining filling material and the time required for this. Nine studies evaluated filling material removal, of which 7 found no significant differences between rotary and reciprocating kinematics. Regarding the time for filling removal, 5 studies showed no difference between both kinematics, 2 studies showed faster results with rotary systems, and other 2 showed the opposite. No significant differences were found in apical transportation, centering ability, instrument failure, dentin removed and extruded debris. A low risk of bias was observed.

Conclusions

This review suggests that the choice of rotary or reciprocating kinematics does not influence the efficacy of filling removal from curved root canals. Further studies are needed to compare the kinematics safety in curved root canals.

Citations

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Fifteen years of engine‐driven nickel–titanium reciprocating instruments, what do we know so far? An umbrella review
Felipe Immich, Lucas Peixoto de Araújo, Rafaella Rodrigues da Gama, Wellington Luiz de Oliveira da Rosa, Evandro Piva, Giampiero Rossi‐Fedele
Australian Endodontic Journal.2024; 50(2): 409. CrossRef
Efficacy of Various Heat-treated Retreatment File Systems on the Apical Deformity and Canal Centering Ability in a Single-rooted Teeth using Nano CT
Swathi S, Pradeep Solete, Ganesh Jeevanandan, Delphine Priscilla Antony S, Kavalipurapu Venkata Teja, Dona Sanju
The Open Dentistry Journal.2024;[Epub] CrossRef
Micro-CT evaluation of the removal of root fillings using rotary and reciprocating systems supplemented by XP-Endo Finisher, the Self-Adjusting File, or Er,Cr:YSGG laser
Gülsen Kiraz, Bulem Üreyen Kaya, Mert Ocak, Muhammet Bora Uzuner, Hakan Hamdi Çelik
Restorative Dentistry & Endodontics.2023;[Epub] CrossRef
Influence of sodium hypochlorite on cyclic fatigue resistance of nickel–titanium instruments: A systematic review and meta-analysis of in vitro studies
Alexandre Henrique dos Reis-Prado, Lucas Guimarães Abreu, Lara Cancella de Arantes, Kiani dos Santos de Paula, Sabrina de Castro Oliveira, Juliana Goto, Ana Cecília Diniz Viana, Francine Benetti
Clinical Oral Investigations.2023; 27(11): 6291. CrossRef
Retreatment of XP-endo Shaper and R-Endo files in curved root canals
Hayam Y. Hassan, Fahd M. Hadhoud, Ayman Mandorah
BMC Oral Health.2023;[Epub] CrossRef
Advancing Endodontics through Kinematics
Shilpa Bhandi, Dario Di Nardo, Francesco Pagnoni, Rosemary Abbagnale
World Journal of Dentistry.2023; 14(6): 479. CrossRef

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Comparison of the shaping ability of novel thermally treated reciprocating instruments: Cangül Keskin, Murat Demiral, Evren Sarıyılmaz; Restor Dent Endod 2018;43(2):e15. Published online March 3, 2018; DOI: https://doi.org/10.5395/rde.2018.43.e15

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Objectives

The present study aimed to evaluate the shaping ability of 2 thermally treated nickel-titanium reciprocating systems in simulated curved canals.

Materials and Methods

Forty simulated canals were prepared to apical size 25 using Reciproc Blue R25 (VDW) and WaveOne Gold Primary (Dentsply Sirona) instruments. Standard pre- and post-preparation images were taken and superimposed. The removal of resin material was measured at 5 standard points: the canal orifice, halfway between the canal orifice and the beginning of the curve, the beginning of the curve, the apex of the curve, and the end-point of the simulated canal. The data were analysed using the independent sample t-test with a 5% significance threshold.

Results

The canals in which Reciproc Blue R25 was used showed a significantly greater widening than those in which WaveOne Gold was used at 4 of the 5 measurement points (p < 0.05). The Reciproc Blue R25 instrument removed significantly more resin from the inner aspect of the curve at 2 of the 5 points and similar amounts at the remaining 3 points. At the 2 apical points, there was no significant difference between the Reciproc Blue R25 and WaveOne Gold Primary instruments.

Conclusion

Both instruments respected the original canal anatomy; however, WaveOne Gold resulted in a more conservative shape with less transportation.

Citations

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Shaping Ability of the Root Canal System Using Reciproc and Reciproc Blue in Preparation of Artificial Canals
Hawazin Majdi, Khalid Merdad, Tariq Abuhaimed, Lujain Mirdad, Omar Alkhattab, Abdulaziz Bakhsh
Pesquisa Brasileira em Odontopediatria e Clínica Integrada.2025;[Epub] CrossRef
Comparison of four different file systems in terms of transportation in S-shaped canals and apically extruded debris
Mustafa Alrahhal, Fatma Tunç
Journal of Oral Science.2024; 66(4): 226. CrossRef
Assessment of Debris Extrusion in Curved Canals: An In Vitro Analysis of Various Single‐File Endodontic Instrumentation Systems
Muhammad Zubair Ahmad, Boonlert Kukiattrakoon
International Journal of Dentistry.2024;[Epub] CrossRef
Shaping ability of rotary and reciprocating single-file systems in combination with and without different glide path techniques in simulated curved canals
Lu Shi, Yunfei Yang, Jie Wan, Wen Xie, Ruiming Yang, Ying Yao
Journal of Dental Sciences.2022; 17(4): 1520. CrossRef
An Investigation of the Accuracy and Reproducibility of 3D Printed Transparent Endodontic Blocks
Martin Smutný, Martin Kopeček, Aleš Bezrouk
Acta Medica (Hradec Kralove, Czech Republic).2022; 65(2): 59. CrossRef
Shaping Ability of Reciprocating Single-file Systems in Simulated Canals: Reciproc versus Reciproc Blue
İrem ÇETİNKAYA, Mukadder İnci BAŞER KOLCU
SDÜ Tıp Fakültesi Dergisi.2021; 28(1): 145. CrossRef
Combination of a new ultrasonic tip with rotary systems for the preparation of flattened root canals
Karina Ines Medina Carita Tavares, Jáder Camilo Pinto, Airton Oliveira Santos-Junior, Fernanda Ferrari Esteves Torres, Juliane Maria Guerreiro-Tanomaru, Mario Tanomaru-Filho
Restorative Dentistry & Endodontics.2021;[Epub] CrossRef
Apical extrusion of debris with different rotary and reciprocating single-file endodontic instrumentation systems: a systematic review and meta-analysis protocol
Muhammad Zubair Ahmad, Durre Sadaf, Marcy McCall MacBain, Ahmed Nabil Mohamed
BMJ Open.2020; 10(9): e038502. CrossRef
Micro-computed tomographic assessment of the shaping ability of the One Curve, One Shape, and ProTaper Next nickel-titanium rotary systems
Pelin Tufenkci, Kaan Orhan, Berkan Celikten, Burak Bilecenoglu, Gurkan Gur, Semra Sevimay
Restorative Dentistry & Endodontics.2020;[Epub] CrossRef
Changes in Geometry and Transportation of Root Canals with Severe Curvature Prepared by Different Heat-treated Nickel-titanium Instruments: A Micro–computed Tomographic Study
Daniel José Filizola de Oliveira, Graziela Bianchi Leoni, Rafael da Silva Goulart, Manoel Damião de Sousa-Neto, Yara Teresinha Correa Silva Sousa, Ricardo Gariba Silva
Journal of Endodontics.2019; 45(6): 768. CrossRef
Several factors can affect the root canal transportation of MB2 canals in extracted maxillary first molars
R. R. Vivan, M. P. Alcalde, E. J de Camargo, V. A. S. Marques, M. V. R. Só, J. A. Duque, M. A. H. Duarte
International Endodontic Journal.2019; 52(4): 551. CrossRef
Effect of larger apical size on the quality of preparation in curved canals using reciprocating instruments with different heat thermal treatments
J. A. Duque, R. R. Vivan, M. A. H. Duarte, M. P. Alcalde, V. M. Cruz, M. M. B. Borges, C. M. Bramante
International Endodontic Journal.2019; 52(11): 1652. CrossRef

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Endodontic management of a maxillary first molar with three roots and seven root canals with the aid of cone-beam computed tomography: Gurudutt Nayak, Kamal Krishan Singh, Rhitu Shekhar; Restor Dent Endod 2015;40(3):241-248. Published online June 3, 2015; DOI: https://doi.org/10.5395/rde.2015.40.3.241

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Variation in root canal morphology, especially in maxillary first molar presents a constant challenge for a clinician in their detection and management. This case report describes the successful root canal treatment of a three rooted right maxillary first molar presenting with three canals each in the mesiobuccal and distobuccal roots and one canal in the palatal root. The clinical detection of this morphologic aberration was made using a dental operating microscope, and the canal configuration was established after correlating and computing the clinical, radiographic and cone-beam computed tomography (CBCT) scan findings. CBCT images confirmed the configuration of the canals in the mesiobuccal and distobuccal roots to be Al-Qudah and Awawdeh type (3-2) and type (3-2-1), respectively, whereas the palatal root had a Vertucci type I canal pattern. This report reaffirms the importance of careful examination of the floor of the pulp chamber with a dental operating microscope and the use of multiangled preoperative radiographs along with advanced diagnostic aids such as CBCT in identification and successful management of aberrant canal morphologies.

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Endodontic Management of Maxillary First Molar with Seven Root Canals Diagnosed Using Cone-beam Computed Tomography: A Case Report
Ravindranath Megha, Venkatachalam Prakash
World Journal of Dentistry.2021; 12(1): 89. CrossRef
The MB3 canal in maxillary molars: a micro-CT study
Ronald Ordinola-Zapata, Jorge N. R. Martins, Hugo Plascencia, Marco A. Versiani, Clovis M. Bramante
Clinical Oral Investigations.2020; 24(11): 4109. CrossRef
Maxillary first molar with 7 root canals diagnosed using cone-beam computed tomography
Evaldo Rodrigues, Antônio Henrique Braitt, Bruno Ferraz Galvão, Emmanuel João Nogueira Leal da Silva
Restorative Dentistry & Endodontics.2017; 42(1): 60. CrossRef
Endodontic management of a maxillary first molar with seven root canal systems evaluated using cone-beam computed tomography scanning
VijayReddy Venumuddala, Sridhar Moturi, SV Satish, BKalyan Chakravarthy, Sudhakar Malapati
Journal of International Society of Preventive and Community Dentistry.2017; 7(5): 297. CrossRef

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Endodontic treatment of maxillary lateral incisors with anatomical variations: Moon-Hwan Lee, Jung-Hong Ha, Myoung-Uk Jin, Young-Kyung Kim, Sung-Kyo Kim; Restor Dent Endod 2013;38(4):253-257. Published online November 12, 2013; DOI: https://doi.org/10.5395/rde.2013.38.4.253

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Maxillary lateral incisors usually exhibit a single root with a single canal. However, maxillary lateral incisor teeth with unusual morphology of root canal system are frequently reported. These cases of variable root canal anatomy can be treated well by nonsurgical endodontic methods. A detailed description of root canal morphology is fundamental for successful endodontic treatment. Treatment using an operating microscope, radiographs from different angles, and cone-beam computerized tomography (CBCT) can produce more predictable endodontic outcomes.

Citations

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Endodnontic Management of a Maxillary Lateral Incisor with Two Roots
Pujan Kranti Kayastha, Merina Shakya, Laxman Poudel
Journal of Interdisciplinary Dentistry.2022; 12(1): 32. CrossRef
Non-surgical management of dens invaginatus type IIIB in maxillary lateral incisor with three root canals and 6-year follow-up: A case report and review of literature
Suraj Arora, Gurdeep Singh Gill, Shahabe Abullais Saquib, Priyanka Saluja, Suheel M Baba, Shafait Ullah Khateeb, Anshad M Abdulla, Shashit Shetty Bavabeedu, Ahmed Babiker Mohamed Ali, Mohamed Fadul A Elagib
World Journal of Clinical Cases.2022; 10(33): 12240. CrossRef
Endodontic management and follow-up of two rooted maxillary lateral incisor with open apex – A case report
R AnithaKumari, Sneha Jeetendra, Siddharth Rai, Sudhanva Eregowda
IP Indian Journal of Conservative and Endodontics.2020; 5(4): 200. CrossRef
Geminated Maxillary Lateral Incisor with Two Root Canals
Nayara Romano, Luis Eduardo Souza-Flamini, Isabela Lima Mendonça, Ricardo Gariba Silva, Antonio Miranda Cruz-Filho
Case Reports in Dentistry.2016; 2016: 1. CrossRef
Surgical management with intentional replantation on a tooth with palato-radicular groove
Jorge Forero-López, Luis Gamboa-Martínez, Laura Pico-Porras, Javier Laureano Niño-Barrera
Restorative Dentistry & Endodontics.2015; 40(2): 166. CrossRef
Use of cone-beam computed tomography and three-dimensional modeling for assessment of anomalous pulp canal configuration: a case report
Alper Sinanoglu, Dilek Helvacioglu-Yigit, Ibrahim Mutlu
Restorative Dentistry & Endodontics.2015; 40(2): 161. CrossRef
Endodontic management of a mandibular second molar with radix entomolaris: a case report
Rosaline Hannah, Deivanayagam Kandaswamy, Nachimuthu Jayaprakash
Restorative Dentistry & Endodontics.2014; 39(2): 132. CrossRef

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A maxillary canine with two separated root canals: a case report: Dong-Ryul Shin, Jin-Man Kim, Duck-Su Kim, Sun-Young Kim, Paul V Abbott, Sang-Hyuk Park; J Korean Acad Conserv Dent 2011;36(5):431-435. Published online September 30, 2011; DOI: https://doi.org/10.5395/JKACD.2011.36.5.431

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Maxillary canines have less anatomical diversities than other teeth. They usually have a single root and root canal. This report describes an endodontic treatment of a maxillary canine with two separated root canals which have not been reported through the demonstration of radiography and computerized tomography (CT).

Even though appropriated endodontic treatment has been performed, the severe pain could happen due to lack of consideration of anatomical variations of the teeth. Therefore, the clinicians should be well aware of the possibility of anatomical variations in the root canal system during endodontic treatment even if the number of root canals is obvious such as in this case.

Citations

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Management of an Unusual Maxillary Canine: A Rare Entity
Jaya Nagendra Krishna Muppalla, Krishnamurthy Kavuda, Rajani Punna, Amulya Vanapatla
Case Reports in Dentistry.2015; 2015: 1. CrossRef

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Time-dependent effects of EDTA application on removal of smear layer in the root canal system: Ja-Kyong Lee, Sang-Hyuk Park, Gi-Woon Choi; J Korean Acad Conserv Dent 2006;31(3):169-178. Published online May 31, 2006; DOI: https://doi.org/10.5395/JKACD.2006.31.3.169

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This study was to verify that the combined application of NaOCl and EDTA was more effective in removal of smear layer than the application of NaOCl alone. Furthermore it was aimed to find out the optimal time for the application of EDTA.

Thirty five single rooted teeth were cleaned and shaped. NaOCl solution was used as an irrigant during instrumentation. After instrumentation, root canals of the control group were irrigated with 5 ml of NaOCl for 2 minutes. 30 sec, 1 min, and 2 min group were irrigated with 5 ml of 17% EDTA for 30 sec, 1 min, and 2 min respectively. Then the roots were examined with scanning electron microscopy for evaluating removal of smear layer and erosion of dentinal tubule.

The results were as follows;

The control group:

The smear layer was not removed at all.

The other groups:

1) Middle⅓: All groups showed almost no smear layer. And the erosion occurred more frequently as increasing irrigation time.

2) Apical⅓: The cleaning effect of 2 min group was better than the others.

The results suggest that 2 min application of 17% EDTA should be adequate to remove smear layer on both apical⅓ and middle⅓.

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Enhancing the Antibacterial Effect of Erythrosine-Mediated Photodynamic Therapy with Ethylenediamine Tetraacetic Acid
MinKi Choi, Haeni Kim, Siyoung Lee, Juhyun Lee
THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY.2024; 51(1): 32. CrossRef
Apical foramen morphology according to the length of merged canal at the apex
Hee-Ho Kim, Jeong-Bum Min, Ho-Keel Hwang
Restorative Dentistry & Endodontics.2013; 38(1): 26. CrossRef
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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