کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3145235 1197056 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of chemical activation of a 35% hydrogen peroxide bleaching gel on its penetration and efficacy—In vitro study
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی دندانپزشکی، جراحی دهان و پزشکی
پیش نمایش صفحه اول مقاله
Influence of chemical activation of a 35% hydrogen peroxide bleaching gel on its penetration and efficacy—In vitro study
چکیده انگلیسی

ObjectivesThe aim of this study was to evaluate the effects of chemical activation of hydrogen peroxide (HP) gel on colour changes and penetration through the tooth structure.MethodsOne hundred and four bovine incisors were used. One dentine (CD) disc and one enamel–dentine (ED) disc were prepared from each tooth. They were positioned over artificial pulpal chambers and the bleaching was performed with an experimental 35% HP gel. Two control and six experimental groups were prepared. In the positive control group (PC) no chemical activator was used. In the negative control group (NC) the specimens did not receive any bleaching. Each experimental group received a different chemical activator (manganese gluconate—MG; manganese chlorite—MC; ferrous sulphate—FS; ferrous chlorite—FC; and mulberries root extract—MRE). After the bleaching procedure a sample of solution was collected from the artificial pulpal chamber and the HP concentration was measured. The data were analysed using ANOVA, Tukey's, and Dunnett's tests.ResultsThe groups MG and FS showed a significantly lower penetration of HP than the PC group. For the parameter Delta E, all the groups, with the exception of the group MRE, showed a significantly higher means in relation to the PC group in ED colour. For dentine colour, just the groups MG and FS had significant differences in relation to PC.ConclusionsThe addition of MG and FS decreases the penetration of HP. The chemical activation using metal salts tested was effective in increasing the bleaching effect.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dentistry - Volume 38, Issue 10, October 2010, Pages 838–846
نویسندگان
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