Finite Element Study of PEEK Materials Applied in Post-Retained Restorations

• DOI: 10.3390/polym14163422
• Publication Date: 2022-08-22T05:56:40Z
• Authors: Hao Yu; Zhihong Feng; Ling Wang; Senay Mihcin; Jianfeng Kang; Shizhu Bai; Yimin Zhao
• Keywords: 03 medical and health sciences; 0302 clinical medicine; polyetheretherketone; finite element analysis; post-retained restoration; biomechanical behaviors; Article

Background: This study aimed to investigate the biomechanical behaviors of polyether ether ketone (PEEK) and traditional materials (titanium fiber) when used restore tooth defects in form prefabricated post or customized via computational modelling. Methods: First, prototype natural tooth, prototypes were established, respectively, whilst residual root was restored with dentin ferrule using reverse engineering methods. Then, stress strain CFR-PEEK (PEEK reinforced by 30% carbon pure PEEK without any reprocessing) compared those made three-dimensional finite element method. Results: From point view, metal fiber posts, both demonstrated reduced post-core interface stress, post-root cement stress; moreover, while closest that dentin. Conclusions: Compared posts could reduce risk debonding vertical fracture, whether they as but behavior fiber-reinforced restorations dentin, no matter if post. Therefore, be more suitable massive defects. Pure needs filler reinforcement for post-retained restoration.