Estudo in situ do efeito de um agente clareador sobre a microdureza de esmalte dental higido e desmineralizado

AUTOR(ES)
DATA DE PUBLICAÇÃO

1999

RESUMO

The purpose of this in situ study was to evaluate effect of home bleaching agent on sound and demineralizated human enamel. Enamel dental slabs (4 x 4mm), one sound and other with artifical caries lesion, wer:e fixed in first molar of 35 volunteers. Thesis cross-over 2 x 2 study was perfomed in two experimental periods of 3 weeks, preeceeded tDy 2 weeks of run in, with 2 wee~s interval between experimental periods as wash out. During each phase of this blind study, half volunteers used a comercial 10% carbamide peroxide home dental bleachling and the other half used as placebo. The effect of these bleaching agents on sound or carious enamel were compared by microhardness profiles. The t-Student test detect no significant effect of carry-over in demineralizated (p=o, 9862; t=0,0175) and sound enamel (p=O,2553; t=1, 1694). The Analysis of Variance, in a components of variance model, showed no significant difference betwee: bleaching agent (p=o, 784, f=0,10), volunteres grup (p=2121), period (p=6049) e tooth x depth x agent (p=0,984). Difference was signicant between kind-of-enamel (p<0,0001), depth (p<0,0001!) and kind-of;.enamel x depth (p=0,0034). Use at home dental bleaching not promote alterations on sound and demineralizated enamel.

ASSUNTO(S)

esmalte dentario caries dentarias dentes

ACESSO AO ARTIGO

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