Initial color change and color retention with a hydrogen peroxide bleaching strip

被引:0
|
作者
Gerlach, RW [1 ]
Gibb, RD [1 ]
Sagel, PA [1 ]
机构
[1] Procter & Gamble Co, Hlth Care Res Ctr, Mason, OH 45040 USA
来源
AMERICAN JOURNAL OF DENTISTRY | 2002年 / 15卷 / 01期
关键词
D O I
暂无
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Purpose: A randomized, double blind clinical trial was conducted to evaluate initial color improvement and post-treatment color retention following vital bleaching with a strip-based tooth whitening system. Materials, and Methods: After balancing for baseline color, 57 healthy adults were randomized to either whitening strips with a 5.3% hydrogen peroxide bleaching gel (Crest Whitestrips) or placebo strips without hydrogen peroxide. Maxillary and mandibular anterior teeth were treated twice daily for 30 minutes each over a 2-week period, and efficacy was measured objectively by comparing digital images of teeth collected at baseline, end-of-treatment (Week 2) and 6 months after treatment (Month 6). Results: The whitening strip group experienced a highly significant (P<0.0001) reduction in yellow of -2.0 Deltab* units versus baseline and -1.95 Deltab* units versus placebo, with similar results noted for the other color parameters in the study. Most of the initial color change remained at 6 months post-treatment, with the whitening strip group continuing to demonstrate highly significant (P<0.0001) improvements in tooth color relative to baseline and placebo. Age was found to significantly contribute to initial color improvement, with younger subjects experiencing a greater initial reduction in yellowness compared to older participants, but not to post-treatment color retention. The whitening strips were well tolerated, with minor tooth sensitivity and oral irritation representing the most common findings during treatment. There were no persistent or new treatment-related adverse events during the 6-month monitoring period.
引用
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页码:3 / 7
页数:5
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