Performance of polyetheretherketone (PEEK) versus cobalt chromium to fabricate removable partial denture frameworks: A systematic review

Clinical studies and in vitro research comparing PEEK and Co-Cr frameworks for RPDs are still sparse. However, current evidence indicates a comparable fit with mean ±standard deviation gap distance of 42.8 ±29.4 µm for PEEK frameworks and 130.9 ±50.5 µm for Co-Cr frameworks. Additionally, retention, and patient satisfaction with PEEK frameworks were found similar to those of conventional Co-Cr frameworks.