In the review article “PEEK in Fixed Dental Prostheses: Application and Adhesion Improvement”, the authors explore how PEEK — already well-established in orthopedics — becomes a promising alternative to traditional metals or ceramics when used for crowns, fixed partial dentures, and post-and-core restorations.
PEEK stands out for its excellent mechanical behavior: its elastic modulus (3–4 GPa) approaches that of human cortical bone, enabling better stress distribution and reducing the risk of root fractures — a significant advantage over stiff metal or zirconia frameworks.
Its low density, reduced abrasiveness, and radiolucency further contribute to the protection of abutment teeth and surrounding tissues, while minimizing imaging artifacts.
In addition, PEEK’s biocompatibility — non-mutagenic, non-cytotoxic, and non-allergenic — presents a safe option for patients with metal sensitivities or allergies.
However, PEEK also brings its own challenges. Its chemically inert and hydrophobic surface hinders adhesive bonding with dental cements or composite veneers — a crucial limitation for long-term retention and prosthesis success.
The article reviews various surface-treatment techniques aimed at overcoming this barrier, including acid etching, plasma treatment, airborne-particle abrasion, laser treatment, and the use of specialized adhesive systems.
Given these strengths and limitations, PEEK emerges as a compelling candidate for modern fixed dental restorations — especially when a balance between biomechanical performance, biocompatibility, and clinical longevity is desired.
For dental professionals seeking to implement innovative materials in restorative practice, this article offers a thorough and critical overview.
👉 Read the full article in PDF to explore the latest evidence, adhesion protocols, and clinical recommendations for PEEK in fixed prosthodontics.
