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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Performance of crowns cemented on a fiber-reinforced composite framework 5-unit implant-supported prostheses: in silico and fatigue analyses

Texto completo
Autor(es):
Bergamo, Edmara T. P. [1] ; Yamaguchi, Satoshi [2] ; Lopes, Adolfo C. O. [1] ; Coelho, Paulo G. [3, 4, 5] ; de Araujo-Junior, Everardo N. S. [1] ; Jalkh, Ernesto B. Benalcazar [3, 1] ; Zahoui, Abbas [1] ; Bonfante, Estevam A. [1]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont & Periodontol, Al Otavio Pinheiro Brisola 9-75, BR-17012901 Bauru, SP - Brazil
[2] Osaka Univ, Grad Sch Dent, Dept Biomat Sci, 1-8 Yamadaoka, Suita, Osaka 5650871 - Japan
[3] NYU, Coll Dent, Dept Biomat, New York, NY - USA
[4] NYU, Langone Med Ctr, Hansjory Wyss Dept Plast Surg, New York, NY - USA
[5] NYU, Tandon Sch Engn, Mach Aerosp Engn, Brooklyn, NY - USA
Número total de Afiliações: 5
Tipo de documento: Artigo Científico
Fonte: Dental Materials; v. 37, n. 12, p. 1783-1793, DEC 2021.
Citações Web of Science: 0
Resumo

Objective. To characterize the biomechanical performance of fiber-reinforced composite 5 unit implant-supported fixed dental prostheses (FDPs) receiving individually milled crowns by insilico and fatigue analyses. Methods. Eighteen implant-supported five-unit fiber-reinforced composite frameworks with an individually prepared abutment design were fabricated, and ninety resin-matrix ceramic crowns were milled to fit each abutment. FDPs were subjected to step-stress accelerated-life testing with load delivered at the center of the pontic and at 2nd molar and 1st premolar until failure. The reliability of the prostheses combining all loaded data and of each loaded tooth was estimated for a mission of 50,000 cycles at 300, 600 and 900 N. Weibull parameters were calculated and plotted. Fractographic and finite element analysis were performed. Results. Fatigue analysis demonstrated high probability of survival at 300 N, with no significant differences when the set load was increased to 600 and 900 N. 1st and 2nd molar dataset showed high reliability at 300 N, which remained high for the higher load missions; whereas 1st premolar dataset showed a significant decrease when the reliability at 300 N was compared to higher load missions. The characteristic-strength of the combined dataset was 1252 N, with 1st molar dataset presenting higher values relative to 2nd molar and 1st premolar, both significantly different. Failure modes comprised chiefly cohesive fracture within the crown material originated from cracks at the occlusal area, matching the maximum principal strain location. Significance. Five-unit implant-supported FDP with crowns individually cemented in a fiber -reinforced composite framework presented a high survival probability. Crown fracture comprised the main failure mode (c) 2021 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved. (AU)

Processo FAPESP: 19/08693-1 - Compósitos experimentais à base de alumina e zircônia infiltrados por vidro: caracterização microestrutural e das propriedades ópticas e mecânicas.
Beneficiário:Edmara Tatiely Pedroso Bergamo
Linha de fomento: Bolsas no Brasil - Pós-Doutorado
Processo FAPESP: 19/00452-5 - COMPÓSITOS EXPERIMENTAIS 70%Al2O3-30%ZrO2: CARACTERIZAÇÃO MECÂNICA, ESTRUTURAL E TOPOGRÁFICA
Beneficiário:Ernesto Byron Benalcazar Jalkh
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
Processo FAPESP: 19/14798-0 - Desenvolvimento de blocos pré sinterizados de compósito ZTA - 80%Al2O3/20%ZrO2 para fresagem em sistema CAD/CAM
Beneficiário:Adolfo Coelho de Oliveira Lopes
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 18/03072-6 - Compósitos experimentais 70%Al2O3-30%ZrO2: caracterização estrutural e da sobrevida antes e após envelhecimento
Beneficiário:Ernesto Byron Benalcazar Jalkh
Linha de fomento: Bolsas no Brasil - Doutorado