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- Original Article A clinical evaluation of a bleaching strip containing 2.9% hydrogen peroxide
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Eun-Sook Park1, So-Rae Seong1, Seong-Tae Hong1, Ji-Eun Kim1, So-Young Lee1, Soo-Youn Hwang1, Shin-Jae Lee2,4, Bo-Hyoung Jin3,4, Ho-Hyun Son1,4, Byeong-Hoon Cho1,4
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2006;31(4):-281.
DOI: https://doi.org/10.5395/JKACD.2006.31.4.269
Published online: July 31, 2006
1Department of Conservative Dentistry, School of Dentistry, Seoul National University, Seoul, Korea.
2Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea.
3Department of Preventive Dentistry, School of Dentistry, Seoul National University, Seoul, Korea.
4Dental Research Institute, Seoul National University, Seoul, Korea.
- Corresponding Author: Byeong-Hoon Cho. Dept. of Conservative Dentistry, School of Dentistry, and Dental Research Institute, Seoul National University, 28-2 Yeongun-dong, Chongro-gu, Seoul, Korea 110-749. Tel: +82-2-2072-3514, Fax: +82-2-764-3514, chobh@snu.ac.kr
• Received: January 26, 2006 • Revised: February 28, 2006 • Accepted: March 3, 2006
Copyright © 2006 Korean Academy of Conservative Dentistry
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Abstract
- This study evaluated the effectiveness and safety of an experimental bleaching strip (Medison dental whitening strip, Samsung medical Co., Anyang, Korea) containing 2.9% hydrogen peroxide. Twenty-three volunteers used the bleaching strips for one and a half hour daily for 2 weeks. As control group, the same strips in which hydrogen peroxide was not included were used by 24 volunteers with the same protocol. The shade change (ΔE*, color difference) of twelve anterior teeth was measured using Shade Vision (X-Rite Inc., S.W. Grandville, MI, USA), Chroma Meter (Minolta Co., Ltd. Osaka, Japan) and Vitapan classical shade guide (Vita Zahnfabrik, Germany). The shade change of overall teeth in the experimental group was significantly greater than that in the control group (p < 0.05) and was easily perceivable. The change resulted from the increase of lightness (CIE L* value) and the decrease of redness (CIE a* value) and yellowness (CIE b* value). The shade change of individual tooth was greatest in canine, and smallest in central incisor. The safety of the bleaching strip was also confirmed.
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REFERENCES
Figure 1
Differences in ΔE* between control group and experimental group obtained using Shade Vision (SV), Chroma Meter CR 321 (CR) and Vitapan shade guide (VP).
Figure 2
Shade changes by the bleaching procedure in overall means of L*, a*, and b* measured using Chroma Meter CR 321.
Figure 3
Shade changes by the bleaching procedure in overall means of L*, a*, and b* measured using Shade Vision.
Figure 4
Shade changes by the bleaching procedure in overall means of L*, a*, and b* measured using Vitapan classical shade guide.
Table 1
CIE Lab* values§ of each shade tab coded in the Vita classical shade guide and their ordinal values converted by the descending-ordered brightness sequence
§O'Brien WJ, Groh CL, Boenke KM9). A new, small-color-difference equation for dental shades. J Dent Res 69:1762-1764, 1990.
Table 3
Shade Vision: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant
*, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively.
Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276)
Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Table 4
Chroma Meter CR 321: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant
*, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively.
Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276)
Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Table 5
Vitapan classical shade guide: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant
*, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively.
Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276)
Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Table 6
Gingival inflammation index, Plaque index, and change in Electric pulp test scores before and after bleaching with experimental and control strips
Table 7
Initial ordinal shade values§ of the experimental and control groups measured using Shade Vision and Vitapan classical shade guide and their changes after bleaching study
§The shade code of each tab in Vita classical shade guide were converted to ordinal values by the descending-ordered brightness sequence.
Tables & Figures
REFERENCES
Citations
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Jin-Kyung Lee, Sun-Hong Min, Sung-Tae Hong, So-Ram Oh, Shin-Hye Chung, Young-Hye Hwang, Sung-Yeop You, Kwang-Shik Bae, Seung-Ho Baek, Woo-Cheol Lee, Won-Jun Son, Kee-Yeon Kum
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Figure 1
Differences in ΔE* between control group and experimental group obtained using Shade Vision (SV), Chroma Meter CR 321 (CR) and Vitapan shade guide (VP).
Figure 2
Shade changes by the bleaching procedure in overall means of L*, a*, and b* measured using Chroma Meter CR 321.
Figure 3
Shade changes by the bleaching procedure in overall means of L*, a*, and b* measured using Shade Vision.
Figure 4
Shade changes by the bleaching procedure in overall means of L*, a*, and b* measured using Vitapan classical shade guide.
Figure 1
Figure 2
Figure 3
Figure 4
A clinical evaluation of a bleaching strip containing 2.9% hydrogen peroxide
CIE Lab* values§ of each shade tab coded in the Vita classical shade guide and their ordinal values converted by the descending-ordered brightness sequence
§O'Brien WJ, Groh CL, Boenke KM9). A new, small-color-difference equation for dental shades. J Dent Res 69:1762-1764, 1990.
Age and gender of the participants in the study
Shade Vision: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant
*, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively.
Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276)
Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Chroma Meter CR 321: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant
*, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively.
Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276)
Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Vitapan classical shade guide: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant
*, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively.
Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276)
Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Gingival inflammation index, Plaque index, and change in Electric pulp test scores before and after bleaching with experimental and control strips
Initial ordinal shade values§ of the experimental and control groups measured using Shade Vision and Vitapan classical shade guide and their changes after bleaching study
§The shade code of each tab in Vita classical shade guide were converted to ordinal values by the descending-ordered brightness sequence.
Table 1
CIE Lab* values§ of each shade tab coded in the Vita classical shade guide and their ordinal values converted by the descending-ordered brightness sequence
§O'Brien WJ, Groh CL, Boenke KM
Table 2
Age and gender of the participants in the study
Table 3
Shade Vision: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant *, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively. Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276) Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Table 4
Chroma Meter CR 321: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant *, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively. Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276) Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Table 5
Vitapan classical shade guide: color measurements, color changes and their statistical results
Abbreviations; tx: treatment, R: correlation coefficient between the measrements before treatment and the changes after treatment, SD: standard deviation, D: mean differences, NS: not significant *, **, and *** mean p < 0.05, p < 0.01, and p < 0.001, respectively. Sample numbers of overall measurements: Control, n = 288; Experimental, n = 276) Sample numbers of each tooth measurements: Control, n = 24; Experimental, n = 23)
Table 6
Gingival inflammation index, Plaque index, and change in Electric pulp test scores before and after bleaching with experimental and control strips
Table 7
Initial ordinal shade values§ of the experimental and control groups measured using Shade Vision and Vitapan classical shade guide and their changes after bleaching study
§The shade code of each tab in Vita classical shade guide were converted to ordinal values by the descending-ordered brightness sequence.
