光谱光度法评估 Opalescence PF 10% 的疗效：一项为期 14 个月的临床研究。

Spectrophotometric assessment of the effectiveness of Opalescence PF 10%: a 14-month clinical study.

机构信息

Oral and Dental Research Institute, Faculty of Dentistry, University of the Western Cape, Tygerberg 7505, South Africa.

出版信息

J Dent. 2010 Feb;38(2):113-7. doi: 10.1016/j.jdent.2009.09.009. Epub 2009 Sep 23.

DOI:10.1016/j.jdent.2009.09.009

PMID:19781594

Abstract

OBJECTIVES

To evaluate the effectiveness of Opalescence PF 10% just after treatment, at 6-month follow-up and at a 14-month follow-up period.

METHODS

Opalescence PF 10% was applied nightly for 14 days. The color of teeth 11 and 21 of 17 subjects were measured with a spectrophotometer (L*; a*; b*) before treatment, just after treatment (14 days), after 6 months and after 14 months. Subjects were instructed to take note of any tooth sensitivity.

RESULTS

For all three components (L*, a* and b*) statistical significant differences (p<0.05) in the values between base-line, after treatment (14 days later), after 6 months and after 14 months were found (Wilcoxon Signed Rank Sum Test). The decrease in L* was about 20% after 6 months and about 50% after 14 months. The a* value decreased approximately 14% after 6 months but was worse after 14 months than at the beginning. The b* value decreased the least with about 9% after 6 months and about 8% after 14 months. The decrease in DeltaE(ab)(*) was approximately 20% after 14 months. Less than 20% of the subjects experienced mild tooth sensitivity just after treatment.

CONCLUSION

Significantly whiter teeth were found after treatment as well as after a 6-month follow-up period. The whiteness/brightness (L*) decreased with approximately 50% after 14 months and the a* value with approximately 50% after 7 months, while the yellowness (b* value) remained even after 14 months.

CLINICAL IMPLICATIONS

The product is an effective tooth whitener resulting in only low tooth sensitivity. Re-bleaching could be done at about 14 months.

摘要

目的

评估 Opalescence PF 10% 治疗后即刻、6 个月随访和 14 个月随访期间的疗效。

方法

每晚使用 Opalescence PF 10% 治疗 14 天。在治疗前、治疗后 14 天（即第 14 天）、6 个月后和 14 个月后，用分光光度计（L*、a*、b*）测量 17 名受试者的 11 号和 21 号牙齿的颜色。嘱受试者注意任何牙齿敏感。

结果

对于所有三个参数（L*、a和 b），在基线、治疗后（第 14 天）、6 个月后和 14 个月后，发现值之间存在统计学显著差异（p<0.05）（Wilcoxon 符号秩和检验）。6 个月后 L值下降约 20%，14 个月后下降约 50%。a值在 6 个月后约下降 14%，但在 14 个月后比开始时更差。b值下降最少，6 个月后下降约 9%，14 个月后下降约 8%。DeltaE(ab)()在 14 个月后下降约 20%。治疗后不到 20%的受试者出现轻度牙齿敏感。