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Resin composite repair for implant-supported crowns.
Bonfante, Estevam A; Suzuki, Marcelo; Hirata, Ronaldo; Bonfante, Gerson; Fardin, Vinicius P; Coelho, Paulo G.
Afiliação
  • Bonfante EA; Department of Prosthodontics, University of São Paulo, Bauru College of Dentistry, Bauru, SP, Brazil.
  • Suzuki M; Department of Operative Dentistry and Prosthodontics, Tufts University School of Dental Medicine, Boston, Massachusetts.
  • Hirata R; Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010.
  • Bonfante G; Department of Prosthodontics, University of São Paulo, Bauru College of Dentistry, Bauru, SP, Brazil.
  • Fardin VP; Department of Prosthodontics, University of São Paulo, Bauru College of Dentistry, Bauru, SP, Brazil.
  • Coelho PG; Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, New York, 10010.
J Biomed Mater Res B Appl Biomater ; 105(6): 1481-1489, 2017 08.
Article em En | MEDLINE | ID: mdl-27098440
This study evaluated the reliability of implant-supported crowns repaired with resin composites. Fifty-four titanium abutments were divided in three groups (n = 18 each) to support resin nanoceramic molar crowns, as follows: (LU) (Lava Ultimate, 3M ESPE); LU repaired with either a direct or an indirect resin composite. Samples were subjected to mouth-motion accelerated-life testing in water (n = 18). Cumulative damage with a use stress of 300 N was used to plot Weibull curves for group comparison. Reliability was calculated for a mission of 100,000 cycles at 400 N load. Beta values were 0.83 for LU, 0.31 and 0.27 for LU repaired with Filtek and Ceramage, respectively. Weibull modulus for LU was 9.5 and η = 1047 N, m = 6.85, and η = 1002 N for LU repaired with Ceramage, and m = 4.65 and η = 766 N for LU repaired with Filtek (p < 0.10 between LU and LU repaired with Filtek). Reliability at 400 N was 100% for both LU and LU repaired with Ceramage which were significantly higher than LU Filtek repair (32%). LU restored crowns failed cohesively. Fractures were confined within the restored material, and detailed fractography is presented. The performance of resin nanoceramic material repaired with an indirect composite was maintained after accelerated-life testing compared to unrepaired controls. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1481-1489, 2017.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estresse Mecânico / Teste de Materiais / Implantes Dentários / Resinas Compostas / Coroas Limite: Humans Idioma: En Revista: J Biomed Mater Res B Appl Biomater Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estresse Mecânico / Teste de Materiais / Implantes Dentários / Resinas Compostas / Coroas Limite: Humans Idioma: En Revista: J Biomed Mater Res B Appl Biomater Assunto da revista: ENGENHARIA BIOMEDICA Ano de publicação: 2017 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos