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KMID : 1143520170050010033
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Journal of Korean Society of Oral Health Science
2017 Volume.5 No. 1 p.33 ~ p.41
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Comparison of the Effectiveness by Remineralization Paste on Bleached Enamel
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Jung Im-Sil
Kim Min-Young
Lee Hye-Jin
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Abstract
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The purpose of this study was to compare specialized bleaching agents, 15% hydrogen peroxide(HP) and 35% cabamide peroxide(CP), in terms of the efficacy of CPP-ACP. Using 60 healthy molars, 60 test pieces were established and divided into five groups each comprised of 12. Group 1 was D. W.; Group 2 15% HP; Group 3 15% HP+CPP-ACP; Group 4 35% CP; and Group 5 35% CP+CPP-ACP. The treatment was performed for two hours per day over four weeks. After processing, the test pieces were observed for color change(ΔE*), micro hardness, micro structure, and roughness on the enamel surface with a scanning electron microscope. Collected data were analyzed with paired t-test. The comparison results according to color change(ΔE*) confirm color changes after bleaching processing. The analysis results of micro hardness on the enamel surface show a decrease in micro hardness in all the groups after bleaching. The observations made with a scanning electron microscope and atomic force microscope in order to analyze the test pieces in micro structure on the enamel surface reveal that the surface grew rough due to decalcification after bleaching processing. In a group where CPP-ACP was applied along with a teeth bleaching agent, remineralization happened on the rough enamel surface after bleaching processing. The application of CPP-ACP on the enamel surface after using a teeth bleaching agent containing CPP-ACP or carrying out a teeth bleaching process can induce remineralization on the surface and thus reduce many possible side effects of teeth bleaching processing.
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KEYWORD
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CPP-ACP, 35% Cabamide peroxide, 15% Hydrogen peroxide, Remineralization
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