Flexural Behavior of Biocompatible High-Performance Polymer Composites for CAD/CAM Dentistry

High-performance polymeric materials have been used in computer-assisted design/ milling (CAD/CAM) dental restorative treatments due to their favorable esthetics as well mechanical and biological properties. Biocompatible poly-ether-ether-ketone (PEEK) glass-fiber-reinforced composite techno-polymer (FRC) resins reportedly possess good flexural shock absorption However, intraoral thermal fluctuations may adversely affect them. This study aimed investigate the strength effect of aging on two commercially available high-performance polymers intended for CAD/CAM milled frameworks definitive restorations. A total 20 bar specimens were prepared using (n = 10); PEEK(P) Bioloren FRC(F). Specimens from each material group randomly divided into sub-groups 5): before (uP uF) after aging, with 10,000 thermocycles (5–55 °C) (aP aF). All subjected a three-point bending test universal testing machine. Flexural (Fs) values calculated all specimens, means statistically analyzed t-test, general linear model (GLM) repeated measure ANOVA (p < 0.05). There was significant decrease Fs (F) 0.03). exhibited significantly higher than (P) 0.001). type had Within limitations this study, both exceeded ISO recommendations strength. FRC benefit long-span fixed partial dentures implant-supported denture frameworks.