Estudo "in vitro" da infiltração marginal em restaurações de cavidades classe I, com composito e base de cimento de ionomero de vidro

AUTOR(ES)
DATA DE PUBLICAÇÃO

1992

RESUMO

The microleakage of composite resin/glass ionomer cement class I restorations was evaluated i n this "in vitro" study. A classic I cavity was prepared in 21 human pre-molares. The teeth were divided in three groups and the cavity preparations were treated as follows: in group A were lined up with a glass ionomer cement base and restored with, unfilled resin and composite resin. In group B ware lined up with a glass ionomer cement base, submitted to enamel and base acid base acid etching treatment and restored with unfilled resin and composite resin, and in group C were lined up with a glass ionomer cement base submitted to enamel acid etching treatment and restored with unfilled resin and composite resin. After being restored the teeth ware stored for 24 hs at 37°C and 100% relative air humidity. In the following step they ware submited to 100 thermal cycles in water baths ranging in temperature from 4 to 60ºC. The marginal seal were measured using a dye penetration evaluation. Using a stereoscopic microscope the levels of microleakage Were recorded and photographed . The analysis of the results showed significant statistical difference when enamel acid etching treatmen l was used, which proved to reduce or prevent miroleakage. The use of a base acid etching treatment differed statisticaly when was not used . The use of a glass ionomer cement base with acid etching the enamel walls prevented microleakage in composite/glass ionomer class I restorations

ASSUNTO(S)

cimentos dentarios odontologia - restauração materiais dentarios

ACESSO AO ARTIGO

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