Finite Element Analysis (fea) Study Comparing Titanium and Peek Caps in a Conometric Connection Between Implant and Prosthesis
Advanced Engineering Materials（2024）
Polytechnic University of Bari
Abstract
Prosthetic retention relies on the perfect adaptation between the cap and the abutment of a dental implant. The conometric connection ensures retention similar to cemented systems, preventing bacterial infiltration and sustaining a high implant success rate. Furthermore, the material used for the cap plays a crucial role in distributing stress on the implant components and bone. Traditionally, caps use Titanium (Ti), but ongoing research investigates Polyetheretherketone (PEEK) for its bone‐like qualities and similar elasticity to Ti. This Finite Element Analysis (FEA) study compares stress and strain distributions between crestal and subcrestal implants using Ti and PEEK conometric caps, assessing retention through cap displacement to determine the material best suited for proper retention aligned with implant insertion depth. The findings indicate an improvement in stress and strain on trabecular bone, a reduction in stress on cortical bone, and thus enhanced implant stability due to higher stresses around the implant threads, particularly with PEEK coping and subcrestal placement. Consequently, PEEK emerged as a promising substitute for Ti in conometric caps as it absorbs stress more effectively, distributing it across prosthetics to counter stress‐shielding and prevent implant failure. This article is protected by copyright. All rights reserved.
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