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KMID : 0896220000200010231
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Journal of Daegu Health College
2000 Volume.20 No. 1 p.231 ~ p.239
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Effect of tooth bleaching agents on color of tooth
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Chung Suk-Min
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Abstract
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This study was purposed to evaluate the effect of commercial home tooth bleaching agent application on the color of tooth. Fifty sound extracted teeth were randomly divided and the color differences between before and after treatment with 5 types of tooth bleaching agents (Nite White Excel, Insta-Brite, Opalescence, Plus White and StarBrite Contrast _(P.M).) were evaluated. Teeth were treated with 5 types of bleaching agents and the color changes were evaluated. The results were as follows; 1. By 4 weeks bleaching agents treatment, the difference of value (L^(*)) of the tooth were increased as high as 3.61 ~ 7.75 and the color difference (E^(*)) showed as high as 9 ~14. 2. L^(*) and E^(*) between 2 week treated- and 4 week treated-groups did not show significant changes (p>0.05), except L^(*) and E^(*) in the cases of Plus White and E in the cases of StarBrite Contrast treated group (p<0.05). 3. Nite White Excel among tested bleaching agents induced greatest L^(*) increase for teeth showing significant changes of L^(*) by 2 weeks bleaching agent treatments and by 4 weeks bleaching agent treatments except in the case of Opalescence (p<0.05). Nite White Excel induced significantly greater E^(*) for teeth by 2 and 4 weeks bleaching agent treatments when comparing to the E^(*) induced by all other tested bleaching agents groups (p<0.05). These results demonstrate that all the commercial tooth bleaching agents have appreciable bleaching effect on teeth.
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