Fracture resistance of endodontically treated teeth restored with resin post reinforced with glass fiber
Autor: | Ioana Suciu, Ruxandra Bartok, Bogdan Dimitriu, Mihaela Chirila, Pharmacy, Bucharest, Romania, Ana Maria Serban, Oana Elena Amza |
---|---|
Rok vydání: | 2021 |
Předmět: |
Materials science
Glass fiber Dentistry 02 engineering and technology Composite Resins Lateral condensation fractures resistance Tooth Fractures 03 medical and health sciences 0302 clinical medicine stomatognathic system 0203 mechanical engineering resin post Materials Testing Humans Statistical analysis Maxillary central incisor Resin cement Tooth Nonvital business.industry FRC 030206 dentistry General Medicine Surface friction 020303 mechanical engineering & transports Fracture (geology) Dual Cure Resin Cement Original Article Glass Stress Mechanical business glass fiber Post and Core Technique |
Zdroj: | Journal of Medicine and Life |
ISSN: | 1844-3117 1844-122X |
DOI: | 10.25122/jml-2020-0180 |
Popis: | This study aims to determine whether the design of resin posts reinforced with glass fiber (FRC) and Reporfost (Angelus, Londrina, PR, Brazil) significantly improves the fracture resistance of endodontically treated teeth restored through this method.A batch of 30 maxillary monoradicular teeth (15 central incisors, 15 canines) were treated endodontically by step-back technique (apical enlargement 40-K file) sealed with Sealapex (Kerr Corporation, Orange, US) and gutta-percha by lateral condensation, cold. They were divided into two equal groups, prepared for cementing the FRC posts. The Exacto posts (Angelus, Londrina, PR, Brazil) in group 1 and the Reforpost posts (Angelus; Londrina; PR, Brazil) were cemented with dual cure resin cement Breeze Self-Adhesive Resin Cement (Pentron Clinical, Orange, US). Fracture resistance testing was performed on the crown-apical axial direction, using the Hounsfield / Tinius Olsen H1-KS, PA, USA mechanical testing apparatus. The behavior of each tooth-post assembly was recorded as a graph. The statistical analysis was done using one way ANOVA (α=0.05). The differences between the Exacto post group and the Reforpost post group are not statistically significant (p = 0.466). The maximum force recorded was 970 N and the minimum 186N. The mean force at which the fracture occurred was approximately 500N for both groups. The strain test showed that modifying the Reforpost post design did not improve the fracture resistance parameters of the tooth-post assembly through increasing the surface friction or maintaining adhesion to the walls of the root dentin. |
Databáze: | OpenAIRE |
Externí odkaz: |