Estudo comparativo acerca da aplicação de sistema adesivo em diferentes regiões do substrato dental

Autores

  • Veridiana Camilotti State University of West Parana
  • Virgínia Bosquiroli State University of West Parana
  • Máx Dobrovolski State University of West Parana
  • Mario Alexandre Coelho Sinhoretic Piracicaba Dental School
  • Priscilla Busatoa do Monte Ribeiro State University of West Parana
  • Lyvia Karla Cerci Ferreira Bertacchinib State University of West Parana
  • Márcio José Mendonça State University of West Parana

DOI:

https://doi.org/10.15448/1980-6523.2016.4.22482

Palavras-chave:

Adesivo autocondicionante, Força de adesão, Dentes bovinos

Resumo

OBJETIVO: O objetivo do presente estudo foi avaliar a força de adesão (FA) de diferentes sistemas adesivos auto-condicionantes aplicados na dentina bovina.
METODOS: 50 dentes bovinos foram desgastados com lixas abrasivas e divididos aleatoriamente em 5 grupos: SB – Single Bond Plus; AEO – Adapter Easy One; ADH – AdheseSE; ASE – Adapter SE Plus and CLEAR – Clear Fill. Após a aplicação do sistema adesivo, 5 cilindros de Tygon (1,8 mm×2 mm) foram posicionados na superfície vestibular de cada dente, preenchidos com resina composta (Filtek Z350) e fotopolimerizados. Três cilindros de resina composta foram produzidos para cada coroa de dente bovino, um localizado na porção incisal, um no terço médio e outro na porção cervical, totalizando 30 corpos de prova (CP) para cada grupo. Os CP foram submetidos à Máquina de Teste Universal (Kratos) para avaliar a força de resistência à microtração, sob força constante de 0,5 mm/min. A FA foi calculada e analisada através do ANOVA de uma via e post hoc de Tuckey (p<0,05).
RESULTADOS: A maior FA foi obtida no grupo SB e não houve diferença significante entre os sistemas testados nos terços médio e cervical. Após a análise do tipo de fratura, foi constatada a maior prevalência de falha adesiva em todos os grupos.
CONCLUSÃO: O adesivo de dois passos SB apresentou a maior força de adesão nas no terço incisal de dentes bovinos quando comparado a adesivos autocondicionantes.

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Publicado

2017-08-03

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Artigo Original