Evaluation of early resin luting cement damage induced by voids around a circular fiber post in a root canal treated premolar by integrating micro-CT, finite element analysis and fatigue testing

Fiber posts have been used to restore endodontically treated teeth with insufficient coronal tooth structure to retain a core for the definitive restoration [1,2]. Clinical studies have demonstrated high success rates without the occurrence of root fractures owing to fiber posts that have a similar elastic modulus to that of dentin reducing stress transmission to the root. Possible root fractures are thus avoided [1,3 –6]. However, the most frequent cause of failure in teeth reconstructed with fiber posts involve post debonding, which can occur at the post-cement (resin luting material) interface and/or between the cement and root dentin [7–9].

Source: Dental Materials - May 7, 2018 Category: Materials Science Authors: Yen-Hsiang Chang, Hsuan-Wen Wang, Pei-Hsun Lin, Chun-Li Lin Source Type: research