Revista de Odontologia da UNESP
https://revodontolunesp.com.br/article/5880180d7f8c9d0a098b4a46
Revista de Odontologia da UNESP
Original Article

Efeito da desinfecção em microondas sobre a microinfiltração na interface de resinas para base e reembasamento de prótese

Effect of microwave disinfection on the microleakage at the interface of hard chairside reline resins and denture base resin

Jorge, J.H.; Giampaolo, E.T.; Vergani, C.E.; Machado, A.L.; Pavarina, A.C.; Rodrigues, M.G.

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Resumo

Este estudo avaliou o efeito da desinfecção em microondas (650 W/6 minutos) sobre a microinfiltração na interface de união de três reembasadores e três resinas para base de prótese. Amostras (12 x 3 x 3 mm) de resina Lucitone 550, Acron MC e QC 20 foram reembasadas com os materiais Kooliner, Tokuyama Rebase Fast II, Ufi Gel Hard, Lucitone 550, Acron MC e QC 20 (n = 20). A microinfiltração foi avaliada após 48 horas de armazenamento em água a 37 °C (G2A), após dois ciclos de desinfecção em microondas (G2M), após sete ciclos de desinfecção em microondas (G7M) e após sete dias de armazenamento em água a 37 °C (G7A). Posteriormente, todas as amostras foram imersas em solução de nitrato de prata a 50% por 24 horas. O sistema de análise de imagens Leica Qwin foi utilizado para determinar a microinfiltração na interface de união entre os materiais. Os dados foram analisados pelos testes de Kruskal Wallis e Fisher ao nível de 95% de significância. Pela análise dos resultados concluiu-se que não foi observada diferença significante entre os grupos analisados. A desinfecção em microondas não influenciou a microinfiltração.

Palavras-chave

Infiltração, reembasamento de dentadura, desinfecção, dentadura

Abstract

This study investigated the effect of microwave disinfection (650 W/6 min) on the microleakage at the interface of three hard chairside reline resins and three denture base resins. Rectangular bars (12 x 3 x 3 mm) of Lucitone 550, Acron MC and QC 20 were made and relined with Kooliner, Tokuyama Rebase Fast II and Ufi Gel Hard, Lucitone 550, Acron MC and QC 20 resins (n = 20). The microleakage was performed after 48 hours storage in water at 37°C (G2A), after two cycles of microwave disinfection (G2M), after seven cycles of microwave disinfection (G7M) and after 7 days storage in water at 37°C (G7A). Subsequently, all specimens were immersed in 50% silver nitrate solutions for 24 hours. Leica Qwin image analysis software was used to determine microleakage at the interface of the materials Data were analyzed using the Kruskal-Wallis and Fisher tests at a 95% significance level. It can be concluded that no significant difference was noted between the groups. Microwave disinfection had no effect on the microleakage.

Keywords

Microleakage, denture rebasing, denture disinfection, denture

References



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