High-concentrated carbamide peroxide bleaching agents effects on enamel surface

被引：114

作者：

Cavalli, V ^{[1
]}

Arrais, CAG ^{[1
]}

Giannini, M ^{[1
]}

Ambrosano, GMB ^{[1
]}

机构：

[1] Univ Campinas, Piracicaba Sch Dent, Dept Restorat Dent, Piracicaba, SP, Brazil

来源：

JOURNAL OF ORAL REHABILITATION | 2004年 / 31卷 / 02期

关键词：

bleaching; enamel; carbamide peroxide; roughness; staining; surface morphology;

D O I：

10.1111/j.1365-2842.2004.01138.x

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Concern has been expressed regarding the adverse effects of peroxide-containing tooth bleaching agents on enamel surface. This study examined enamel average surface roughness before (baseline) and after an in-office bleaching protocol and investigated the influence of high concentrations of carbamide peroxide gels on its surface staining and morphology. Flat enamel surfaces were submitted to 35 and 37% carbamide peroxide or to no bleaching treatment (n = 10) and evaluated with a profilometer. Eight specimens from each group were randomly selected and immersed in a 2% methylene blue solution. Afterwards, specimens were ground into powder and prepared for the spectrophotometric analysis. Two remained specimens of each group were examined using a scanning electron microscope. Data were subjected to analysis of variance and Tukey test (P > 0.05). Baseline roughness average was statistically similar for all groups, however, 35% carbamide peroxide produced the roughest enamel surfaces. Different concentrations of carbamide peroxide produced similar staining means and enamel surface morphological alterations.

引用

页码：155 / 159

页数：5

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