Efeito da escovação com dentifricio abrasivo fluoretado e não fluoretado sobre a superficie do esmalte dental clareado atraves de peroxido de carbamida a 10% e 35 % : avaliação da rugosidade e dureza superficiais

AUTOR(ES)

Claudia Cia Worschech

DATA DE PUBLICAÇÃO

2004

RESUMO

The purpose of this study was evaluate superficial enamel dental roughness and microhardness when Carbamide peroxide 10% or 35% were used, in different time intervals and submitted to different superficial cleaning treatment: G1 ? Not Brushed; G2 ? brushed with abrasive fluoride dentifrice; G3 ? Brushed with abrasive dentifrice without fuoride; G4 ? Brushed with water. One hundred twenty fragments of molars were obtained and were polished and individually embedded in polystyrene resin. The specimens were polished with sandpaper of decrescent grit 400, 600 and 1000 and felt cloth with 6, 3, 1 and ¼ mm abrasive pastes. A perfilometer was used to obtain three measurements on the surface of each specimen and the mean of Ra value (mm) was determinate to baseline and 7, 14, 21, 28 days of treatment, and 7, 14, 21 and 28 days post treatment and microhardness tests were performed with a load of 25g for 5 s at for each time intervals. CP 10% used alone, did not alter the enamel microhardness and roughness values. CP 10% associated with brushing without dentifrice did not alter the enamel roughness values but decreased microhardness values. The groups, which received brushing with abrasive fluoride dentifrice or non-fluoride dentifrice, showed increase in microhardness and roughness values when CP 10% was used, only the group which received fluoride dentifrice showed values similar to baseline. CP 35% used alone, decreased microhardness superficial enamel values, however, did not alter superficial roughness in the same enamel. CP 35% associated with brushing without dentifrice, decreased the superficial microhardness enamel values. The groups, which received brushing with abrasive fluoride dentifrice or non-fluoride dentifrice, showed increase in microhardness and roughness values when CP 35% was used.

ASSUNTO(S)

esmalte dentario dentifricio dentistica

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