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KMID : 0355420020260030385
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Journal of Korean Academy of Oral Health
2002 Volume.26 No. 3 p.385 ~ p.396
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Randomized controlled clinical trial of the efficacy and safety of a 2.6% hydrogen peroxide containing tooth-whitening strips
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Abstract
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The purpose of this study was to evaluate the efficacy and safety of self-applied 2.6% hydrogen peroxide containing tooth-whitening strips.
The safety and efficacy of a 2.6% hydrogen peroxide strip tooth-whitening procedure were evaluated in a double blind experimental design. One hundred young adults were randomly assigned to experimental(55 persons) and placebo control groups(45 persons) by matching on color of teeth, smoking habit, gender and perception level of their teeth color. The subjects of both experimental and placebo groups were treated to a 14-day regimen in which strips were applied to six upper anterior teeth twice per day for 30 minutes under supervision.
The efficacy was evaluated by comparing the brightness of tooth surface at baseline, 5 days, 10 days, and 15 days. The brightness of tooth was measured with VTTAPAN classical(Vita Zahnfabrik, Germany). Discomfort and hypersensitivity was evaluated by self-administered questionnaire.
Eighty-five subjects(43 experimental and 42 placebo) passed through experiments. The experimental group experienced a highly significant improvement in brightness of teeth color relative to baseline and placebo(P ( .01). Rate of subjects whose brightness of teeth color enhanced was significantly higher in experimental group(P ( .01). Twenty-three percent of experimental group felt tolerable level of gingival irritation.
Tooth-whitening strips with 2.6% hydrogen peroxide was effective for improving brightness of tooth color and was more convenient and safe to use than tray-based method.
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