Effects of enamel moistening and repositioning guide color on tooth whitening outcomes: A clinical trial

This clinical trial investigated the effects of pre‐application enamel moistening on the impact of a 37% carbamide peroxide whitener on tooth color changes and the influence of repositioning guide colors. Forty participants were randomly assigned to in‐office tooth bleaching with either moistened en...

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Bibliographic Details
Published in:European journal of oral sciences 2024-02, Vol.132 (1), p.e12958-n/a
Main Authors: Santana, Tauan Rosa, Silva, Paula Fernanda Damasceno, Santana, Márcia Luciana Carregosa, Mattos, Clara Lemos Leal Barata, Faria‐e‐Silva, André Luis
Format: Article
Language:English
Subjects:
Bleaching
carbamide peroxide
Clinical outcomes
Clinical trials
Color
Dental Enamel
Enamel
Humans
Hydrogen Peroxide
Peroxides - pharmacology
Silicones
Teeth
tooth bleaching
Tooth Bleaching - methods
Tooth Bleaching Agents - pharmacology
Tooth Discoloration
Urea
Wetting
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Summary:This clinical trial investigated the effects of pre‐application enamel moistening on the impact of a 37% carbamide peroxide whitener on tooth color changes and the influence of repositioning guide colors. Forty participants were randomly assigned to in‐office tooth bleaching with either moistened enamel (experimental) or dry enamel (control). The whitener was applied for 45 min over two sessions. Tooth color was visually measured or assessed using a spectrophotometer with purple or green silicone guides. Tooth bleaching was assessed using CIE76 (ΔEab) and CIEDE2000 (ΔE00) formulas and by whitening and bleaching index score changes. Moistening the enamel did not significantly affect tooth color. However, the guide color choice only impacted tooth color when measured instrumentally. At baseline, the green guide resulted in statistically significantly whiter teeth than the purple guide. Less pronounced differences in the b* coordinate between baseline and final measurements were found using the green guide. The green guide also produced lower ΔEab values and less change in indexes. In conclusion, moistening the enamel did not significantly impact tooth color changes. However, the repositioning guide color influenced the tooth bleaching measured instrumentally, except for ΔE00.
ISSN:0909-8836
1600-0722
DOI:10.1111/eos.12958