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KMID : 0362320110360040306
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Journal of Korean Academy of Operative Dentistry
2011 Volume.36 No. 4 p.306 ~ p.312
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Clinical assessment of whitening efficacy and safety of in-office tooth whitening system containing 15% hydrogen peroxide with or without light activa
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Noh Young-Suk
Roh Young-Jee
Yoo Yeon-Jee
Lee Hyang-Ok
Lim Sang-Min
Kweon Hyun-Jeong
Kim Ye-Un
Park Seong-Yeon
Yoon Hee-Young
Lee Jung-Hyun
Lee Chan-Hee
Oh So-Ram
Kum Kee-Yeon
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Abstract
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Objectives: This clinical study evaluated the effect of light activation on the whitening efficacy and safety of in-office bleaching system containing 15% hydrogen peroxide gel.
Materials and Methods: Thirty-three volunteers were randomly treated with (n = 17, experimental group) or without light activation (n = 16, control group), using Zoom2 white gel (15% , Discus Dental) for a total treatment time of 45 min. Visual and instrumental color measurements were obtained using Vitapan Classical shade guide and Shadepilot (DeguDent) at screening test, after bleaching, and 1 month and 3 month after bleaching. Data were analyzed using t-test, repeated measure ANOVA, and chi-squared test.
Results: Zoom2 white gel produced significant shade changes in both experimental and control group when pre-treatment shade was compared with that after bleaching. However, shade difference between two groups was not statistically significant (p > 0.05). Tooth shade relapse was not detected at 3 months after bleaching. The incidence of transient tooth sensitivity was 39.4%, with being no differences between two groups.
Conclusions: The application of light activation with Zoom2 white gel system neither achieved additional whitening effects nor showed more detrimental influences.
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KEYWORD
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Hypersensitivity, In-office bleaching, Light activation, Shadepilot, Zoom2 white gel, 15% hydrogen peroxide
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