Efeito da Temperatura de Evaporação do Solvente na Longevidade da Adesão de Adesivos Autocondicionantes à Dentina

Autores

  • Sandra Kiss Moura UNOPAR
  • Carlos Eduardo Silva da Costa UNOPAR
  • Alessandra Reis Silva UEPG
  • Celso Afonso Klein- Júnior ULBRA
  • Sandrine Bittencourt Berger UNOPAR
  • Ricardo Danil Guiraldo UNOPAR
  • Alessandro Dourado Loguercio UEPG

DOI:

https://doi.org/10.17921/2447-8938.2016v18n3p183-7

Resumo

Avaliou-se a durabilidade da adesão de adesivos autocondicionantes à dentina após evaporação dos solventes com jato de ar frio e quente. Os sistemas adesivos Clearfil 3S Bond e OptiBond All-In-One foram aplicados em superfícies planas de dentina, a evaporação dos solventes feita com ar quente (60±2oC) ou ar frio (20±2oC), seguindo-se fotoativação (600mW/cm2 por 10s) e restauração com compósito (3 x 2mm). Após armazenagem em água destilada (24 horas / 37oC), as amostras foram seccionadas para obtenção de paralelogramos de 0,8 mm2 para testar em tração (0,5mm/min) em 24 horas e 6 meses. Dois paralelogramos de cada grupo experimental foram preparados para observar a nanoinfiltração na interface com a dentina. Os valores médios da resistência adesiva (em MPa) de cada grupo foram tratados por Análise de Variância de três fatores e teste de Tukey (5%), sendo o dente a unidade experimental. Foi observada maior adesão após evaporação dos solvents com ar quente (p=0.000) no tempo de 24 horas de armazenagem (0.003). Não houve diferenças para o tipo de adesivo (p=0.343) e nem para a interação adesivo X tempo X temperatura de evaporação do solvente (p>0,05). Concluiu-se que a durabilidade da adesão foi influenciada pela temperatura de evaporação do jato de ar.

Biografia do Autor

Sandra Kiss Moura, UNOPAR

Programa de Pós-Graduação Stricto Sensu em Odontologia / Área de Dentística

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Publicado

2016-10-06

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