AI Article Synopsis
- The study evaluated the biomechanical behavior and safety of PEKK, a high-performance polymer, as a dental post-core material using finite element analysis (FEA) in comparison to traditional materials like gold and fiberglass.
- A 3D model of a maxillary central incisor was created, and a cyclic loading force of 50 N was applied at a 45° angle to assess the material properties.
- While PEKK demonstrated favorable stress distribution and high resistance to failure, it was found to have a greater risk of debonding and crown failure over time compared to metal or fiberglass post-core systems.
Article Abstract
The aim of this study was to evaluate the biomechanical behavior and long-term safety of high performance polymer PEKK as an intraradicular dental post-core material through comparative finite element analysis (FEA) with other conventional post-core materials. A 3D FEA model of a maxillary central incisor was constructed. A cyclic loading force of 50 N was applied at an angle of 45° to the longitudinal axis of the tooth at the palatal surface of the crown. For comparison with traditionally used post-core materials, three materials (gold, fiberglass, and PEKK) were simulated to determine their post-core properties. PEKK, with a lower elastic modulus than root dentin, showed comparably high failure resistance and a more favorable stress distribution than conventional post-core material. However, the PEKK post-core system showed a higher probability of debonding and crown failure under long-term cyclic loading than the metal or fiberglass post-core systems.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5366183 | PMC |
| http://dx.doi.org/10.1155/2017/1373127 | DOI Listing |
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