Effect of in-dental clinic bleaching agents on the releases of mercury from the specimen of amalgam restoration in relation to their times intervals

الملخص EN

Background : Measuring the effect of bleaching agents on mercury release from dental amalgam is important from both restorative and toxicological points view.

The aims of the study was to evaluate the effects of two different types of bleaching agents for vital teeth by using with light source on the release of mercury from the specimen of amalgam restoration. Materials and methods : Fifty three specimen of amalgam restoration, were subject to treated with bleaching agents (35 % hydrogen peroxide and carbamide peroxide ) and then application of light and laser radiation to activate the bleaching agents.

Flameless atomic absorption spectrophotometer with Gold Vapor Generator was used to measure the release of mercury from the specimen of amalgam restoration. Results : Highly significant increase in the release of release of mercury from the specimen of amalgam restoration in relation to the times intervals. Conclusions : In this study showed that release of release of mercury from the specimen of amalgam restoration, after treated with both 35 % carbamide peroxide and 35 % hydrogen peroxide increase with increase the time and compared with control groups