Comparative in vitro study on biomechanical behavior of zirconia and polyetheretherketone biomaterials exposed to experimental loading conditions in a prototypal simulator

TY - JOUR

T1 - Comparative in vitro study on biomechanical behavior of zirconia and polyetheretherketone biomaterials exposed to experimental loading conditions in a prototypal simulator

AU - Vertucci, Vincenzo

AU - Marrelli, Benedetta

AU - Ruggiero, Roberta

AU - Iaquinta, Mario

AU - Marenzi, Gaetano

AU - Parisi, Gian Marco

AU - Gasparro, Roberta

AU - Pacifici, Andrea

AU - Palumbo, Gianfranco

AU - Sammartino, Gilberto

AU - Tatullo, Marco

N1 - Funding Information: Part of the current activities have been carried out Project CustOm-made aNTibacterical/bioActive/ bioCoated prostheses (CONTACT) - CUP: B19J2000 0490005. Copyright: © The author(s).

PY - 2023/4/2

Y1 - 2023/4/2

N2 - 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.

AB - 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.

KW - Biocompatible Materials

KW - Materials Testing

KW - Reproducibility of Results

KW - X-Ray Microtomography

KW - Zirconia

KW - three-point bending test

KW - FPDs

KW - biomaterials

KW - PEEK

UR - https://www.scopus.com/pages/publications/85153447879

U2 - 10.7150/ijms.82297

DO - 10.7150/ijms.82297

M3 - Article

C2 - 37082726

SN - 1449-1907

VL - 20

SP - 639

EP - 651

JO - International journal of medical sciences

JF - International journal of medical sciences

IS - 5

ER -