Digital Image Correlation and Finite Element Analysis of Bone Strain Generated by Implant-Retained Cantilever Fixed Prosthesis

Autor(es)

Tribst, Joao Paulo M. ^[1] ; Dal Piva, Amanda M. O. ^[1] ; Bottino, Marco Antonio ^[1] ; Nishioka, Renato S. ^[1] ; Borges, Alexandre L. S. ^[1] ; Ozcan, Mutlu ^[2]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Inst Sci & Technol, Sao Jose Dos Campos - Brazil

^[2] Univ Zurich, Ctr Dent & Oral Med, Dent Mat Unit, Clin Fixed & Removable Prosthodont & Dent Mat Sci, Zurich - Switzerland

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY; v. 28, n. 1, p. 10-17, MAR 2020.
• Citações Web of Science: 0

Resumo

Purpose: The present study evaluated the displacement and strain generated in an implant-supported fixed prosthesis under axial and non-axial loads using two methods. Materials and methods: Three implants were inserted in a resin block. The Digital Image Correlation (DIC) was used to measure displacement and strain generated on the surface of the resin blocks for the different load applications (500N, 1 image/second). A 3-dimensional model was constructed and a load of 500 N was applied at an axial point and a non-axial point through finite element analysis (FEA). Results: Both methods gave similar trends for the strains, and both gave slightly higher strains with non-axial loading. FEA predicted higher strain magnitude (+/- 11%) in comparison with DIC, but with the same mechanical behavior. According to ANOVA, the loading influenced the strain concentration. Higher strain was generated for non-axial loading around the implant nearest to the loading. Conclusions: For implant-retained cantilever fixed prosthesis, the same load applied in the lever arm induces higher strain in the cervical area of the last implant, which suggests more damaging potential than a load applied at the center of the prosthesis. (AU)

• Processo FAPESP: 17/09104-4 - Comportamento biomecânico e sobrevivência de coroas de cerâmica híbrida implanto-suportadas confeccionadas por diferentes técnicas
• Beneficiário: João Paulo Mendes Tribst
• Modalidade de apoio: Bolsas no Brasil - Doutorado