Effect of Endodontic Retreatment Protocols on Bond Strength of Fiberglass Post to Root Canal Dentine: An In-vitro StudyCorrespondence Address :
Orlando Aguirre Guedes,
Av. UniversitÃ¡ria Km 3, 5-Cidade UniversitÃ¡ria, 75083-515, AnÃ¡polis, GoiÃ¡s, Brazil.
Introduction: Fiberglass Posts (FGPs) associated with composite resin foundation materials have become the primary alternative to restoring teeth with root canal treatment presenting excessive coronal destruction. Despite technical evolution, loss of retention between FGP and root dentine continues to be reported.
Aim: To examine the effect of endodontic retreatment protocols on the bond strength of FGP to radicular dentine.
Materials and Methods: This in-vitro study was conducted at Evangelical University of GoiÃ¡s, Brazil from August 2019 to June 2020. Thirty freshly extracted bovine incisors were instrumented, filled and distributed into three experimental groups with 10 incisors in each groups. Group 1 was control, Group 2 had incisors with gutta-percha removed using K-type files and Group 3 had incisors with gutta-percha removed using ProTaper Universal Retreatment instruments. After root canal retreatment and re-sealing, the fiber posts were cemented into prepared post spaces using a resin-based cement. Roots were transversally sectioned into six 1 mm thick specimens. The push-out test was performed, and the modes of failure were evaluated. Data were analyzed with two-way Analysis of Variance (ANOVA) and Tukey’s test.
Results: There was no significant difference between the mean bond strength values in group 1,2 and 3 with p-value>0.05. The cervical third of root canal presented higher bond strength values compared with the middle and apical thirds. However, significant differences were observed only for the control group (p-value= 0.005). Adhesive failure between resin cement and radicular dentine was the most prevalent type of failure.
Conclusion: The endodontic retreatment protocol did not influence the bond strength of FGP to radicular dentine.
Dental bonding, Post and core, Root canal therapy
Date of Submission: Apr 05, 2021
Date of Peer Review: Jun 17, 2021
Date of Acceptance: Jul 21, 2021
Date of Publishing: Nov 01, 2021
• Financial or Other Competing Interests: None
• Was Ethics Committee Approval obtained for this study? Yes
• Was informed consent obtained from the subjects involved in the study? No
• For any images presented appropriate consent has been obtained from the subjects. No
PLAGIARISM CHECKING METHODS:
• Plagiarism X-checker: Apr 06, 2021
• Manual Googling: Jul 21, 2021
• iThenticate Software: Oct 20, 2021 (25%)
ETYMOLOGY: Author Origin
- Emerging Sources Citation Index (Web of Science, thomsonreuters)
- Index Copernicus ICV 2017: 134.54
- Academic Search Complete Database
- Directory of Open Access Journals (DOAJ)
- Google Scholar
- HINARI Access to Research in Health Programme
- Indian Science Abstracts (ISA)
- Journal seek Database
- Popline (reproductive health literature)