J Dent Rehabil Appl Sci.  2018 Sep;34(3):175-185. 10.14368/jdras.2018.34.3.175.

Efficacy of a self - applied paint - on whitening gel combined with wrap

  • 1Department of Conservative Dentistry, College of Dentistry, Gangneung-Wonju National University, Gangneung, Republic of Korea. drbozon@gwnu.ac.kr
  • 2LG Household & Health Care Research Park, Daejeon, Republic of Korea.


The aim of this clinical study was to evaluate the efficacy and safety of a self - applied paint - on whitening gel combined with wrap to increase the effect of a whitening gel and minimize gingival irritation.
Ninety adult volunteers were randomly treated to a control group and two experimental groups using whitening gel containing 2.8% and 3.0% hydrogen peroxide for 30 persons each. They had used the wrap and whitening gel on maxillary 4 anterior teeth for 30 minutes per day during 2 weeks. Whitening tooth color response was measured by VITA shade guide and ShadeEye NCC®. And side effects were assessed from interview and intraoral examination. The efficacy and safety evaluations were statistically analyzed.
In the evaluation with VITA shade guide, there was significantly the whitening effect in experimental groups compared with the control group. In the evaluation with ShadeEye NCC®, the 3.0% experimental group showed significantly the whitening effect compared to the control group and the 2.8% experimental group (P < 0.05). There were some complaints of minor side effects, but there did not find abnormal symptoms of the gingival stimulation in all groups.
A self - applied paint - on whitening gel combined with wrap can be used as a useful self-whitening material because the whitening effect increases as the concentration of hydrogen peroxide from 2.8% to 3.0% and also no significant side effects are observed.


clinical study; colorimeter; efficacy; hydrogen peroxide; over-the-counter drugs; tooth bleaching
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