A clinical evaluation of efficacy of an office bleaching gel containing 30% hydrogen peroxide

Sin-Young Kim; Je-Uk Park; Chang-Hyen Kim; Sung-Eun Yang

doi:10.5395/JKACD.2010.35.1.040

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Kim, Park, Kim, and Yang: A clinical evaluation of efficacy of an office bleaching gel containing 30% hydrogen peroxide

Basic Research

Journal of Korean Academy of Conservative Dentistry

Journal of Korean Academy of Conservative Dentistry 2010; 35(1): 40-50.

Published online: 31 January 2010

DOI: https://doi.org/10.5395/JKACD.2010.35.1.040

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

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 5 January 2010 Revised 8 January 2010 Accepted 14 January 2010

Abstract

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.

Keywords: Office bleaching gel, Efficacy, Hydrogen peroxide, Clinical study

Figures and Tables

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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