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A clinical evaluation of efficacy of an office bleaching gel containing 30% hydrogen peroxide
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Basic Research A clinical evaluation of efficacy of an office bleaching gel containing 30% hydrogen peroxide
Sin-Young Kim1, Je-Uk Park2, Chang-Hyen Kim2, Sung-Eun Yang1
Journal of Korean Academy of Conservative Dentistry 2010;35(1):40-50.
DOI: https://doi.org/10.5395/JKACD.2010.35.1.040
Published online: January 31, 2010

1Department of Conservative Dentistry, Seoul St. Mary's Hospital, Catholic University of Korea.

2Department of Oral and Maxillofacial Surgery, Seoul St. Mary's Hospital, Catholic University of Korea.

Corresponding Author: Sung-Eun Yang. Department of Conservative Dentistry Seoul St. Mary's Hospital, Catholic University of Korea, 505, Banpo-dong, Seocho-gu, Seoul, 137-807, Korea. Tel: 82-2-2258-6296, Fax: 82-2-537-2374, dentyeun@catholic.ac.kr
• Received: January 5, 2010   • Revised: January 8, 2010   • Accepted: January 14, 2010

Copyright © 2010 Korean Academy of Conservative Dentistry

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  • This study evaluated the efficacy of an office bleaching gel (RemeWhite, Remedent Inc., Deurle, Belgium) containing 30% hydrogen peroxide. 31 volunteers were recieved office bleaching with the RemeWhite for 3 times at one visit, total 2 visits. As control group, the same gel in which hydrogen peroxide was not included was applied to 31 volunteers with the same protocol. The shade change (ΔE*, color difference) of 12 anterior teeth was measured using Colorimerter and Vitapan classical shade guide. The shade change of overall teeth in the experimental group was significantly greater than that in the control group which was measured using Colorimeter. There was also a significant difference between baseline and 14 weeks or 26 weeks though color rebounding phenomenon occurred as time went by. Small shade change difference can be measured accurately using Colorimeter than using Vitapan classical shade guide.
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Table 1
Vita classical shade guide original values converted by the descending-ordered brightness sequence13,14)
jkacd-35-40-i001.jpg
Table 2
Age and gender of the participants in the study
jkacd-35-40-i002.jpg
Table 3
Color changes at 14 weeks in comparison with baseline (Colorimeter)

1)Two sample t-test, 2)Wilcoxon's rank sum test

Diff: V5-V2, D: Differences mean, *: p < 0.05

jkacd-35-40-i003.jpg
Table 4
Color changes at 14 weeks in comparison with baseline (Vitapan)

1)Wilcoxon's rank sum test

*: p < 0.05

jkacd-35-40-i004.jpg
Table 5
Color changes between groups at 26 weeks in comparison with baseline (Colorimeter)

1)Two sample t-test, 2)Wilcoxon's rank sum test

*: p < 0.05

jkacd-35-40-i005.jpg
Table 6
Color changes intra group at each visit (Colorimeter)

1)two sample t-test

2)Wilcoxon's rank sum test

3)Wilcoxon's sign rank test

*: p < 0.05

jkacd-35-40-i006.jpg
Table 7
Color changes between groups at 26 weeks in comparison with baseline (Vitapan)

1)Wilcoxon's rank sum test

jkacd-35-40-i007.jpg
Table 8
Color changes intra group at each visit (Vitapan)

1)Wilcoxon's rank sum test

2)Wilcoxon's sign rank test

*: p < 0.05

jkacd-35-40-i008.jpg

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        A clinical evaluation of efficacy of an office bleaching gel containing 30% hydrogen peroxide
        J Korean Acad Conserv Dent. 2010;35(1):40-50.   Published online January 31, 2010
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      A clinical evaluation of efficacy of an office bleaching gel containing 30% hydrogen peroxide
      A clinical evaluation of efficacy of an office bleaching gel containing 30% hydrogen peroxide

      Vita classical shade guide original values converted by the descending-ordered brightness sequence13,14)

      Age and gender of the participants in the study

      Color changes at 14 weeks in comparison with baseline (Colorimeter)

      1)Two sample t-test, 2)Wilcoxon's rank sum test

      Diff: V5-V2, D: Differences mean, *: p < 0.05

      Color changes at 14 weeks in comparison with baseline (Vitapan)

      1)Wilcoxon's rank sum test

      *: p < 0.05

      Color changes between groups at 26 weeks in comparison with baseline (Colorimeter)

      1)Two sample t-test, 2)Wilcoxon's rank sum test

      *: p < 0.05

      Color changes intra group at each visit (Colorimeter)

      1)two sample t-test

      2)Wilcoxon's rank sum test

      3)Wilcoxon's sign rank test

      *: p < 0.05

      Color changes between groups at 26 weeks in comparison with baseline (Vitapan)

      1)Wilcoxon's rank sum test

      Color changes intra group at each visit (Vitapan)

      1)Wilcoxon's rank sum test

      2)Wilcoxon's sign rank test

      *: p < 0.05

      Table 1 Vita classical shade guide original values converted by the descending-ordered brightness sequence13,14)

      Table 2 Age and gender of the participants in the study

      Table 3 Color changes at 14 weeks in comparison with baseline (Colorimeter)

      1)Two sample t-test, 2)Wilcoxon's rank sum test

      Diff: V5-V2, D: Differences mean, *: p < 0.05

      Table 4 Color changes at 14 weeks in comparison with baseline (Vitapan)

      1)Wilcoxon's rank sum test

      *: p < 0.05

      Table 5 Color changes between groups at 26 weeks in comparison with baseline (Colorimeter)

      1)Two sample t-test, 2)Wilcoxon's rank sum test

      *: p < 0.05

      Table 6 Color changes intra group at each visit (Colorimeter)

      1)two sample t-test

      2)Wilcoxon's rank sum test

      3)Wilcoxon's sign rank test

      *: p < 0.05

      Table 7 Color changes between groups at 26 weeks in comparison with baseline (Vitapan)

      1)Wilcoxon's rank sum test

      Table 8 Color changes intra group at each visit (Vitapan)

      1)Wilcoxon's rank sum test

      2)Wilcoxon's sign rank test

      *: p < 0.05


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