Comparative Effect of Different Remineralizing Agents on the Microhardness of Bleached Enamel- an in Vitro Study (original) (raw)

Background: This study was undertaken to investigate the effect of McInnes bleaching agent on the microhardness of enamel before and after bleaching and to evaluate the effect of G C Tooth Mousse Plus and Toothmin on the bleached enamel surface for its microhardness using Vickers microhardness indenter. Materials and methods: Twenty freshly extracted, sound central incisors were selected and their roots were removed. Twenty samples were divided into 2 groups; n=10 (Group 1for tooth mousse plus and 2 for Toothmin). Microhardness was measured after seventh (1st remineralization cycle) and fourteenth day (2nd remineralization cycle) respectively. Results: Baseline microhardness values of GC Toothmousse and Toothmin when compared with first cycle of bleaching decrease by 1.07% (P<0.001) and .96% (P<0.001) respectively, which is highly significant and a decrease of 2.45% (P<0.001) and 2.56% (P<0.001) after second bleaching cycle which is also highly significant. But significa...

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