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KMID : 0355420070310020167
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Journal of Korean Academy of Oral Health
2007 Volume.31 No. 2 p.167 ~ p.175
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Maintenance of teeth brightness with 0.3% H2O2 containing toothpaste after use of 3.0% H2O2 brightening gel
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Bahng Kew-Hyun
Yoo Su-Min
Park Yong-Duk
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Abstract
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Objectives: To find out the lasting effect of teeth whitening after using gel, this study was executed as a follow-up of the experiment using toothpaste containing 0.3% Hydrogen peroxide (H,O,) for 3 months.
Methods: Using double blind-method, 72 Korean with natural maxillary anterior teeth were selected and equally divided into control group (0% H,O,) and experimental group (3.0% H,O,). The initial brightness (baseline) was measured, and based on this measurement they were cross-distributed into control and experimental group. In the beginning of experiment, buccal side of 6 anterior teeth of every participants were prophylaxised and 2 weeks were allowed to remove residual effect. The brightness of teeth was measured 3 mm above the cervical line of left maxillary lateral incisor. Since 6 maxillary anterior teeth were prophylaxised, left maxillary incisor was designed to be least influenced by adjacent
teeth. For 2 weeks, control group was aslted to apply gel without peroxide on buccal side of maxillary teeth, and experimental group with peroxide 3 times a day for 30 minutes. After application, contact with moisture was avoided for 10 minutes. The brightness of teeth was measured 2nd and 3rd time with interval of 7 days and the duration of use was 14 days. In addition, to find out the lasting effect of whitening gel, control group was given a toothpaste which was used to eliminate residual effect, and experimental group a toothpaste with 0.3% hydrogen peroxide. They were asked to use a toothpaste 3 times a day for 4 weeks and for 3 months a control toothpaste was distributed to all groups allowing 4
inonths of tracing period. Then, the brightness was measured 4th time and compared with 3rd measurement, final effect of gel.
Results: After 2 weeks of use of whitening gel, the brightness of teeth in experimental group was improved by 18.8% compared to control group (p ( 0.05). The difference in percentage of person with brightening effect in control and experimental group after 4 inonths of tracing period was increased by 5.5% but there was no statistical difference (p > 0.05). After 4 months of tracing period following geltype application, experimental group had improved brightness by 26.0%. This result was not different from the brightness immediately after 2 weelts of gel application. Total 5 months of experiment, no adverse-effect on mouth was found in participants.
Conclusion: Based on experiment, the achieved brightness can be maintained by low concentration peroxide containing toothpaste at least for 3 months.
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KEYWORD
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double blind, hydrogen peroxide, toothpaste, tooth whitening
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