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Indonesian Journal of Dentistry 2006; Edisi Khusus KPPIKG XIV:294-296Dental bleaching has been considered as a feasible approach for dental esthetic, and many dental bleaching products can be seen in the market. Therefore, the side effect of a such dental product should be studied. This study was aimed to detemine the effect of carbamide peroxide-containing home bleaching agent on the hardness of dental amalgam surface structure. Forty amalgam filling specimens were divided into 4 groups, which consist of 3 treatment group and 1 control gloups. Each group was exposed to the bleaching agent daily for 2, 4, and 8 hours within 7 days. The Vickers Microhardness Tester, with loads 98.07 mN for 20 seconds, was used to measured the hardeness of amalgam surface. It was revealed that, there was a significant difference between the treatment and the control group on 8 hours period. It was concluded that there was a decrease in hardeness of dertal amalgam surface after having a contact with carbamide peroxide bleaching agent. |
