Avaliação da dentina de dentes decíduos submetidos à técnica de remoção parcial de tecido cariado


IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia




The aim of this study was to evaluate remaining carious dentin microhardness from deciduous teeth submitted to Indirect Pulp Treatment (IPT) and restored with self etching primer and composite, associated or not with calcium hydroxide capping. Deciduous molars treated with IPT and restored with Clearfil SE Bond ¿ Kuraray, Japan (CSE) and composite Filtek-Z250 ¿ 3M ESPE, EUA were clinically and radiographically evaluated until exfoliation. Seven teeth capped with calcium hydroxide (Dycal ¿ Dentsply, EUA ¿ DY) and 10 with CSE were collected and compared with 10 sound deciduous molars where 3- to 4-mm deep cavities were prepared, and also with 10 carious molars were partial caries removal was conducted in vitro. Microhardness analysis was performed after sample sectioning and polishing, at 10-, 35-, 60-, 85-, 110- and 200-¿m depths and later each 100¿m until reaching the pulpar chamber roof. No difference was observed in microhardness values between CSE and DY groups in all depths analyzed, otherwise when compared with carious group, CSE presented significantly higher values from 35¿m depth, while this increase was observed only with 200¿m in the DY group. From 700¿m depth no difference was observed in the microhardness values between all groups in study. It can be concluded that deciduous teeth submitted to IPT presented a hardness increase, independently of the capping material type, Dycal or CSE.


dentes : deciduos materiais odontologicos : adesivos materiais odontologicos : forramento pulpar dentina

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