Fracture resistance of endodontically treated teeth reinforced with customized glass and carbon fiber posts

Thaise Ferreira Carvalho, Adriana Rodrigues Frazão, Luiz Carlos de Lima Dias Junior, Roberta Fonseca de Castro, Eliza Burlamaqui Klautau, Juliana Melo da Silva

Objective: The aim of this study was to compare the fracture resistance of four types of prefabricated intraradicular posts - glass fiber, glass fiber customized by composite resin, carbon fiber, and customized carbon fiber - on bovine teeth. Methods: Sixty bovine teeth were submitted to endodontic treatment and divided into the following groups: GF - glass fiber post; CGF - customized glass fiber post; CF - carbon fiber post; CCF - customized carbon fiber post; control - composite resin restoration. The teeth were embedded in acrylic resin blocks at 2 mm from the cement-enamel junction, simulating the teeth-bone interface. The specimens were submitted to a fracture resistance test in a universal test machine under a 0.5 mm/min load until the fracture of the specimen. The values obtained were submitted to ANOVA and Tukey tests. The analysis of the fracture patterns was performed by the Kruskal-Wallis test. Results: The CCF group presented the highest values of fracture resistance, followed by GF, CGF, and CF posts. The control group offered less resistance than the other groups that received intraradicular posts. The CGF presented the highest number of favorable fractures, in contrast to the control group, which presented the highest number of unfavorable fractures. Conclusion: The use of customized posts reduced the incidence of catastrophic fractures. The lack of intracanal posts led to a higher incidence of irreparable fractures.

Keywords: Endodontics. Post and Core Technique. Compressive Strength. Tooth Fractures. Dental Restoration, Permanent.

How to cite: Carvalho TF, Frazão AR, Dias Junior LCL, Castro RF, Klautau EB, Silva JM. Fracture resistance of endodontically treated teeth reinforced with customized glass and carbon fiber posts. Dental Press Endod. 2019 Jan-Apr;9(1):26-30. DOI: https://doi.org/10.14436/2358-2545.9.1.026-030.oar

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