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Effects of in-office and home bleaching gels on the surface mercury levels of dental amalgam.

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تاریخ
2010
نویسنده
Oskoee, PA
Kahnamoui, MA
Oskoee, SS
Zadfattah, F
Pournaghi-Azar, F
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نمایش پرونده کامل آیتم
چکیده
The aim of this study was to evaluate the effect of different in-office and home bleaching gels on the surface mercury levels of dental amalgam.Sixty disk-shaped amalgam specimens (GS-80, SDI- Australia) were prepared and randomly divided into the following treatment groups: 1. Distilled water (control); 2. 15% home-bleach carbamide peroxide (Opalescence PF, Ultra dent, USA) applied for 6 h/day for 3 weeks; and 3. 35% in-office bleach carbamide peroxide (Opalescence Quick, Ultradent) applied for 30 min/week for 3 weeks. Levels of mercury were measured as weight percentages using an energy dispersive x-ray micro-analyzer detector connected to an electron microscope. Data was analyzed using one-way ANOVA and a post hoc Tukey tests (P<.05).There were no significant differences between the surface mercury levels measured following treatment with the tested home-bleach and in-office bleach products (P=0.71). However, both materials yielded significantly more mercury levels than that of the control group (P<.001).The tested bleaching products significantly elevated the surface mercury levels of amalgam in vitro.
URI
http://dspace.tbzmed.ac.ir:8080/xmlui/handle/123456789/43382
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