Three-Dimensional Finite Element Analysis of Stress Distribution in Zirconia and Titanium Dental Implants

The Journal of Oral Implantology
Camilo Andres Villabona LopezTatiana Miranda Deliberador

Abstract

Zirconia has been presented as an alternative biomaterial to titanium, commercially presented as a single-body implant and/or as an abutment, demonstrating clinically biocompatible favorable results in white and rose esthetics. However, the number of long-term in vivo studies and mechanical tests evaluating the response of stress distribution compared with titanium implants is still limited. The aim of the study was to compare the principal peak stresses in the peri-implant bone around titanium and zirconia implants using the finite element method. Four groups of 3-dimensional models were constructed for the tests: G1, external hexagon titanium implant with a zirconia abutment; G2, zirconia implant with a zirconia abutment; G3, single-body titanium implant; and G4, single-body zirconia implant. Axial and oblique loads of 100 N at 45° were simulated in the prosthetic crown. The bone results showed that the peak stresses decreased by 12% in zirconia implants with 2 parts for axial load and 30% for the oblique load. In single-body implants, the peak stresses decreased 12% in the axial load and 34% in the oblique load when a zirconia implant was used compared with a titanium implant. Although the stress values in megapascals are si...Continue Reading

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Citations

Dec 6, 2019·Macromolecular Bioscience·Jennifer KnausHelmut Cölfen
Feb 23, 2021·Computer Methods in Biomechanics and Biomedical Engineering·Júlio C M SouzaBruno Henriques
Mar 2, 2021·Clinical Oral Implants Research·Daniel AlvesJuan Blanco-Carrion

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