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Comparative clinical study of the effectiveness of three different bleaching methods
Mozhgan Bizhang1, Yong-Hee P Chun, Kristin Damerau
1Heinrich-Heine University, Operative and Preventive Dentistry and Endodontics, Duesseldorf, Germany. mozhgan.bizhang@med.uni-duesseldorf.de
Operative Dentistry
|December 4, 2009
Summary
Home bleaching and in-office bleaching are more effective for teeth whitening than Whitestrips, with results sustained for three months. Both methods offer comparable and superior tooth color change outcomes.
Area of Science:
- Dental science
- Cosmetic dentistry
- Materials science
Background:
- Tooth discoloration is a common aesthetic concern.
- Various bleaching methods exist, but their comparative efficacy needs objective assessment.
Purpose of the Study:
- To compare the efficacy of three professional teeth whitening methods: home bleaching, in-office bleaching, and Whitestrips.
- To evaluate the longevity of tooth color change up to three months post-treatment.
Main Methods:
- Seventy-five subjects with Vita Shade A2 or darker teeth were randomized into three groups: home bleaching (10% carbamide peroxide), in-office bleaching (15% hydrogen peroxide), and Whitestrips.
- Tooth color was objectively measured using a colorimeter at baseline, immediately after treatment, and three months later.
- Statistical analysis included Kruskal Wallis and Mann-Whitney-U tests with a significance level of p < 0.01.
Main Results:
- No dropouts occurred. Mean overall color change (deltaE*) immediately post-treatment was highest for home bleaching (6.57), followed by in-office bleaching (5.77), and Whitestrips (3.58).
- At three months, color change was 4.98 for home bleaching, 4.59 for in-office bleaching, and 2.99 for Whitestrips.
- Home bleaching and in-office bleaching showed significantly better results than Whitestrips, with no significant difference between home and in-office methods.
Conclusions:
- Home bleaching and in-office bleaching are objectively superior to Whitestrips for teeth whitening.
- Both home and in-office bleaching methods demonstrate equal efficiency and sustained results for up to three months.
