A Digital Image Correlation Analysis of Strain Generated by 3-Unit Implant-Supported Fixed Dental Prosthesis: An In Vitro Study

Autor(es)

Peixoto, Raniel F. ; Macedo, Ana P. ; Martinelli, Janisse ; Lapria Faria, Adriana C. ; Tiossi, Rodrigo ; Ribeiro, Ricardo F. ; de Mattos, Maria da G. C.

• Tipo de documento: Artigo Científico
• Fonte: IMPLANT DENTISTRY; v. 26, n. 4, p. 567-573, AUG 2017.
• Citações Web of Science: 1

Resumo

Objective: To evaluate the influence of different veneering materials (porcelain and resin) and implants (short and conventional) in the strain distribution of implant-supported splinted fixed partial dentures (FPDs) using digital image correlation (DIC). Material and Methods: Four polyurethane models were fabricated with resin replicas (first premolar) and short and/or conventional implants replacing the second premolar and first and second molars, according to the following configurations: G1, 2 conventional (second premolar and first molar) and 1 short (second molar) implant; G2, 1 conventional (second premolar) and 2 short (first and second molar) implants; G3, 3 short implants; G4, 3 conventional implants. Porcelain- and resin-veneered splinted FPDs were screwed to the implant abutments. The DIC system was used to calculate strains during application of occlusal load (250 N). Results: Porcelain- and resin-veneered showed similar strain distribution for all groups (P > 0.05). Concentration of compressive strains was higher in G3P and G3R with maximum compressive strains of -1271.50 and -1026.88 mu s, respectively. G4 transferred the best strain distribution (porcelain, -275.14 mu s; resin, -254.44 mu s), followed by G2 (porcelain, -306.79 mu s; resin, -310.63 mu s). Conclusion: The veneering material used did not influence the strain distribution. In addition, conventional implants generate less strain concentration, although the combination of 2 short and 1 conventional implant seems to be a viable plan. (AU)

• Processo FAPESP: 12/09808-8 - Análise qualitativa e quantitativa das tensões geradas por coroas fixas metaloplásticas, unidas e isoladas, na região posterior da mandíbula, reabilitada com implantes regulares e curtos, por meio do método de correlação de imagem digital
• Beneficiário: Raniel Fernandes Peixoto
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 11/01506-0 - Análise comparativa por correlação digital de imagens e não-linear pelo MEF-3D das tensões geradas por próteses parciais fixas cimentadas e parafusadas confeccionadas pelo sistema CAD/CAM em titânio e zircônia
• Beneficiário: Ricardo Faria Ribeiro
• Modalidade de apoio: Auxílio à Pesquisa - Regular