Abstract
Zirconia and polyetheretherketone (PEEK) are two biomaterials widely investigated as substitute for metals in oral prosthetic rehabilitation. To achieve a proper biomechanical behavior, the prosthetic biomaterials must ensure a good resistance to loads, as this is a crucial characteristic enabling their use in dental applications. The aim of this study was to investigate differences in the fracture resistance of different biomaterials in an experimental environment: fixed partial dentures (FPDs) screwed in a prototype of biomimetic mandible. 10 Samples of FPDs were allocated in 2 groups (A and B): Group A (n=5) involved FPDs in zirconia-ceramic, and Group B (n=5) involved FPDs in PEEK-composite. The samples were loaded by means of a three-point bending mechanical test, and the load to fracture has been evaluated generating a point-by-point graphics (speed/load and time/deformation). The samples were further analyzed by micro-computed tomography (micro-CT) and described under experimental loading conditions. Zirconia-ceramic FDPs were the samples reporting the worst results, showing a lower value of vertical displacement with respect to PEEK-based samples. The micro-CT results have further confirmed the preliminary results previously described. This in vitro study aims to give analytic data on the reliability of PEEK as a reliable and strong biomaterial for prosthetic treatments.
Original language | English |
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Pages (from-to) | 639-651 |
Number of pages | 13 |
Journal | International journal of medical sciences |
Volume | 20 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2 Apr 2023 |
Keywords
- Biocompatible Materials
- Materials Testing
- Reproducibility of Results
- X-Ray Microtomography
- Zirconia
- three-point bending test
- FPDs
- biomaterials
- PEEK
ASJC Scopus subject areas
- Medicine(all)