Efficacy of a bleaching agent on fluorescence loss of enamel during orthodontic treatment by quantitative light-induced fluorescence
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Abstract
Objective: The purpose of this study was to evaluate the effect of a bleaching procedure containing 8% hydrogen peroxide on fluorescence loss of maxillary anterior teeth during orthodontic treatment.
Materials and Methods: Six maxillary anterior teeth of 19 patients were evaluated by using quantitative lightinduced fluorescence (QLF). The patients were divided into 2 groups according to the type of orthodontic bracket. Group 1: Orthodontic treatment with metal brackets and using bleaching agent during the last 10 days of orthodontic treatment. Group 2: Orthodontic treatment with ceramic brackets and using bleaching agent during the last 10 days of orthodontic treatment. QLF images were taken before and after orthodontic treatment. Four QLF parameters (ΔF, ΔFmax, A, and ΔQ) were assessed for six maxillary anterior teeth on the images.
Results: In metal bracket group, the QLF parameters revealed no significant changes except at the left maxillary lateral incisor (P < 0.05). In ceramic bracket group, the QLF parameters also revealed no significant changes except at the right maxillary lateral incisor, (P < 0.05). These two groups were reasonably similar with each other in terms of fluorescence loss.
Conclusions: The 8% hydrogen peroxide bleaching agent has no changes in fluorescence loss of maxillary
central incisors and canines. Therefore, it is suggested that no mineral loss when apply 8% hydrogen peroxide on maxillary central incisors and canines during fixed orthodontic treatment.
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References
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