Photoelastic stress analysis of splinted and unitary implant-supported prostheses |
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| Authors: | Eduardo Piza Pellizzer Joel Ferreira Santiago Junior Luiz Marcelo Ribeiro Villa Victor Eduardo de Souza Batista Caroline Cantieri de Mello Daniel Augusto de Faria Almeida Heitor Marques Honório |
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| Affiliation: | 1. Department of Dental Materials and Prosthodontics, Ara?atuba Dental School, Univ. Estadual Paulista (UNESP), José Bonifácio Street, 1193, Ara?atuba, S?o Paulo, 16016-050, Brazil
2. Department of Pediatrics Dentistry, Orthodontics and Public Health, Discipline of Research Methodology and Statistics, Bauru School of Dentistry, University of S?o Paulo (USP), Al. Octávio Pinheiro Brisola, 9-75, Bauru, S?o Paulo, 17012-901, Brazil
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| Abstract: | The aim of this study was to evaluate the effects that splinting and different lengths of implants have on the stress distribution in implant-supported prostheses by photoelastic analysis. A total of five photoelastic resin models were made with different proposed situations, and 400 load applications were performed for the analysis. Compared with the unitary prosthesis, the splinted implant-supported prosthesis acted favorably in the distribution of stresses and strains to the implant (p < 0.001). The increase in length was a significant factor in the stress distribution (p < 0.05) and, ultimately, the overall reduction in stress. It was concluded that the splinted implant-supported prosthesis behaved better biomechanically compared with the unitary prosthesis. |
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