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http://dx.doi.org/10.5392/JKCA.2013.13.10.427

An Evaluation of Whitening Effect and Microhardness on the Enamel Surface by White Toothpaste  

Kim, Hye-Young (경북대학교 치의학전문대학원 생체재료연구소)
Nam, Seoul-Hee (부산대학교 치의학전문대학원 구강해부학교실)
Choi, Jung-Ok (부산대학교 치의학전문대학원 구강해부학교실)
Kwun, Hyeon-Sook (마산대학교 치위생학과)
Jeong, Mi-Ae (강원대학교 치위생학과)
Publication Information
The Journal of the Korea Contents Association / v.13, no.10, 2013 , pp. 427-433 More about this Journal
Abstract
The aim of this study was to evaluate the efficacy of bleached tooth with white toothpaste on the whitening effect, microhardness test. Forty-four human interior teeth were randomly assigned to two groups as follows: Group 1 was used general toothpaste as control, Group 2 exposed to white toothpaste at 3 times a day for 3 minutes. The total application time was 4 weeks. After each application, all tooth were washed with distilled water and immersed in artificial saliva. The color change and microhardness were measured using CIELab Color system and microhardness tester. The data were analyzed by student t-test, using SPSS 20.0 statistical computer program (SPSS Inc., USA). The overall color changes (${\Delta}E$) by white toothpaste have a capability of the whitening efficacy by factor of 2.3 times larger compared with general toothpaste. Moreover, the application of white toothpaste did not cause any microhardness reduction on enamel surface.
Keywords
White Toothpaste; Color Change; Microhardness;
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