Efeito da aplicação tópica de peróxido de hidrogênio sobre a superfície e interface esmalte: restaurações odontológicas

AUTOR(ES)
DATA DE PUBLICAÇÃO

2003

RESUMO

This study intends to analise the superficial roughtness and the interface between amalgam, glass ionomer cement, compomer, porcelain and gold, after the 35% hidrogen peroxide aplication, through bidimensional perfilometry and scaning electron microscopy. There were used 36 human bicuspids, wich had class V cavity in their buccal surfaces. This cavities were restored with restorative materials bellow, and stand out that the conjunt of enamel and restorative materials were submited to a treatment with 35% hidrogen peroxide. This material was aplied 7 times each one, during 30 minutes, with intervals of 24 h between the aplications. The perfilometric analisys before and after the treatment was done in each specimen, achieved the roughtness average valors and skewness. A treated specimen and one non-treated specimen of each group of restorative material were analised in a scaning electron microscopy. There was not alteration at the interface between the enamel and composite resin, amalgam, glass ionomer cement, compomer, porcelain and gold restorations. The enamel and composit resin showed a surface topografy alteration. Amalgam restoration showed increase in the roughtness average. Glass ionomer cement restoration had their matrix etched by the bleaching agent, showing a increase in the number of trine at their surface. Compomer, gold and porcelain restorations did not suffer any alterations after the treatment.

ASSUNTO(S)

dentes restaurações teses. dentes branqueamento teses. materiais dentários teses. peróxidos teses. dentística teses.

ACESSO AO ARTIGO

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