![]() Ceramic materials are widely used because of their good aesthetic properties, robustness, and comfort. Materials traditionally used for dental and maxillofacial restorations mainly include ceramics and metallic biomaterials. ![]() Trauma, fractures, periodontal disease, and caries have led to an increasing clinical demand for high-performance restorative materials in modern dentistry. More importantly, it provides a rationale and a general new basis for the application of PEEK in the dental field. Thus, this review aims to build a conceptual and practical toolkit for the study of the mechanical and adhesive properties of PEEK materials. In addition, the research on the adhesive properties of PEEK over the past few years is highlighted. This paper provides a comprehensive overview of the research progress on the mechanical properties of PEEK for dental applications in the context of specific applications, composites, and their preparation processes. The bond strength can be improved by roughening or introducing functional groups on the PEEK surface by sandblasting, acid etching, plasma treatment, laser treatment, and adhesive systems. However, the bioinert nature of PEEK can make adhesive bonding difficult. Compared to conventional pressed and CAD/CAM milling fabrication, 3D-printed PEEK exhibits excellent flexural and tensile strength and parameters such as printing temperature and speed can affect its mechanical properties. It can be blended with materials such as fibers and ceramics to improve its mechanical strength for better clinical dental applications. As a promising medical material, PEEK can be used as implant abutments, removable and fixed prostheses, and maxillofacial prostheses. Compared to traditional metal and ceramic dental materials, PEEK dental implants exhibit less stress shielding, thus better matching the mechanical properties of bone. Polyetheretherketone (PEEK) is a thermoplastic material widely used in engineering applications due to its good biomechanical properties and high temperature stability.
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