BOND STRENGTH EVALUATION OF DIRECT AND INDIRECT COMPOSITE RESTORATIONS

  • Murilo Baena Lopes Universidade Estadual de Campinas- UNICAMP
  • Simonides Consani Universidade Estadual de Campinas- UNICAMP
  • Mário Alexandre Coelho Sinhoreti Universidade Estadual de Campinas- UNICAMP
  • Luciana Andréia Sálvio Universidade Federal de Juiz de Fora- UFJF
  • Lourenço Correr Sobrinho Universidade Estadual de Campinas- UNICAMP

Resumo

The purpose of this study was to evaluate the bond strength of direct or indirect composite restorations to dentine. Thirty bovine teeth were flattened in order to obtain a plain dentine area. The teeth were divided in 3 groups of 10,
according to the restoration fixing method: 1) Direct technique using Single Bond Adhesive System; 2) Indirect technique using Rely-X resin cement; 3) Indirect technique using high viscosity Filtek Flow composite. For group 1, Z-
250 composite discs were fixated (6mm diameter by 2 mm height) directly on the treated area. For groups 2 and 3, composite discs were made 24 hours before being cemented, with the same dimensions of group 1, and according
to the Rely-X (group 2) and Filtek Flow (group 3) manufacturer’s recommendations. After 24h of water storage, the specimens were submitted to a shear bond test on Instron at a speed of 0.5 mm/min. The data were submitted to ANOVA and Tukey’s test (5%). Filtek Flow (6.81MPa) had a significantly lower bond strength mean than Rely-X (10.18MPa) and Single Bond (13.16MPa), which did not differ significantly from each other. The indirect technique showed similar or worse results than the direct restoration technique, which is dependent on the material used for fixation.
Key words: shear bond strength – flow resin – cement

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Biografia do Autor

Murilo Baena Lopes, Universidade Estadual de Campinas- UNICAMP
Aluno de Pós-graduação do curso de doutorado em Materiais Dentários da FOP-Unicamp
Simonides Consani, Universidade Estadual de Campinas- UNICAMP
Professor Titular da área Materiais Dentários da FOP-Unicamp
Mário Alexandre Coelho Sinhoreti, Universidade Estadual de Campinas- UNICAMP
Professor Titular da área Materiais Dentários da FOP-Unicamp
Luciana Andréia Sálvio, Universidade Federal de Juiz de Fora- UFJF
Professora Adjunta do Departamento de Odontologia Restauradora da UFJF
Lourenço Correr Sobrinho, Universidade Estadual de Campinas- UNICAMP
Professor Titular da área Materiais Dentários da FOP-Unicamp

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Publicado
2016-03-02
Como Citar
Lopes, M. B., Consani, S., Sinhoreti, M. A. C., Sálvio, L. A., & Sobrinho, L. C. (2016). BOND STRENGTH EVALUATION OF DIRECT AND INDIRECT COMPOSITE RESTORATIONS. Arquivos Em Odontologia, 42(4). Recuperado de https://periodicos.ufmg.br/index.php/arquivosemodontologia/article/view/3421
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