전문가 미백술과 자가 미백술 후 치아의 색조 환원과 만족도 변화: 6개월 추적조사
Tooth color reduction and consequent patient satisfaction after office and home bleaching: a 6-month follow-up study
Objectives: The quest for a happy life is accompanied by an increase in social activities, living standards,and socioeconomic development, with individuals showing increased interest in health and esthetics. In the field of dentistry, not only prevention and treatment but also esthetics is gaining popularity. The aim of this study was to identify tooth color reduction and consequent patient satisfaction over aperiod of 6 months after office and home bleaching. Methods: Thirty subjects were divided using the convenience sampling method into two groups basedon the bleaching agent used: 10% carbamide peroxide (CP10; home bleach) and 15% hydrogen peroxide(office bleach). CP10 was used at home in a tray for 2 h/day over 14 days, while 15% hydrogenperoxide was light-activated for 15 min, three times/session (total, 45 min). A control set of teeth withoutany bleaching treatment was used as reference. Shade evaluation was conducted using the Shade EyeNCC at baseline, 1 week, and 1 and 6 months after bleaching. Data were analyzed using the Mann-Whitney U test and the nonparametric Friedman test. Results: There were significant differences in tooth color before and after bleaching in both the homeand office bleach groups, although intergroup differences were not observed. Although b* values afterbleaching were lower than the original values, only slight tooth color reduction was observed at 6months. ΔE*, which represents the overall change in color, at 1 and 6 months after bleaching wassignificantly different from that at baseline in the home bleach group, while it showed no significant differencesin the office bleach group. According to a patient satisfaction survey, patient satisfaction significantlyincreased over time in the home bleach group, although it did not differ significantly betweengroups. Conclusions: Tooth whitening was observed after bleaching in both groups. However, slight color reductionwas observed at 6 months after bleaching, and complete restoration to the color before bleachingdid not occur; therefore, long-term observation of color reduction is required.
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