Avaliação in vitro da Microinfiltração na Interface da Parede Gengival das Caixas Proximais em Cavidades Classe II de Molares Decíduos, Restaurados com Resina Composta Auto e Fotopolimerizável / ANALYSIS “IN VITRO” OF MICROLEAKINGS ON GUM’S EDGES OF THE APPROXIMAL BOXES IN CLASS II CAVITIES OF DECIDUOUS MOLARS, RESTORED WITH AUTO AND LIGHT-CURED COMPOSITE RESIN

AUTOR(ES)
DATA DE PUBLICAÇÃO

1997

RESUMO

The purpose of this study was evaluation “in vitro” of marginal microleakings, present on gum’s edges of class II cavities of deciduous molars, restored with composite resin (auto and light-cured), with the use of a staining solution to verify the leaking. Cavities prepared presented enamel on gum’s edges and were restored according to four different techniques: lightcured composite resin; auto-cured composite resin; mixed technique (auto and light-cured composite resin) and glass-ionomer/composite resin. Next, we proceeded to thermo-cycling (5°C and 55°C, 700 cycles), turning impermeable, immersion in staining solution and slicing. The microleaking evaluation was done according to a pre-established scale (from 0 a 4 degrees). After the statical analysis of the results, it was concluded that all the groups presented microleaking, in varying degrees. However, the groups which used the mixed technique and light-cured resin presented the smallest levels of leaking, and microleaking was not observed on the auto-cured composite resin/light-cured composite resin edge.

ASSUNTO(S)

deciduous tooth composite resin dente decíduo microleakage microinfiltração resina composta

ACESSO AO ARTIGO

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