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Evaluation of the Efficacy and Color Stability of Two Different At‐Home Bleaching Systems on Teeth of Different Shades: A Randomized Controlled Clinical Trial
Author(s) -
Aka Betül,
Celik Esra Uzer
Publication year - 2017
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/jerd.12296
Subject(s) - carbamide peroxide , opalescence , hydrogen peroxide , dentistry , medicine , chemistry , biochemistry , enamel paint , physics , quantum mechanics
Objective This randomized controlled clinical trial compared the bleaching efficacy of two different at‐home bleaching systems on teeth of different shades and their color stability after a 6‐month follow‐up. Materials and Methods Ninety‐two patients (777 teeth) were randomly divided into three groups: (a) negative control, (b) patients treated with a custom‐made tray containing 10% carbamide peroxide (10% CP/PF) (Opalescence PF), and (c) patients treated with a pre‐loaded tray containing 6% hydrogen peroxide (6% HP/Go) (Opalescence Go). Teeth in all groups were divided into three sub‐groups according to the VITA Classic Shade Guide: light (A1–C1), medium dark (C2–B3), and dark (A3.5–C4). Bleaching systems were performed in accordance with manufacturers' instructions for 14 days. The color values were measured at the baseline, 10 days and 14 days of bleaching, 2 weeks, and 6 months after bleaching. Three‐way ANOVA and Mann–Whitney U tests were used for statistical analysis ( α = 0.05). Results Irrespective of original shade, both bleaching groups showed significantly higher Δ E * values than the control groups, and the Δ E * values were significantly higher in the 10% CP/PF groups than those in the 6% HP/Go groups ( p < 0.05). In both bleaching systems, the dark teeth showed higher Δ E * values than the light teeth ( p < 0.05). The Δ E * values decreased significantly only in the 10% CP/PF groups after 6 months ( p < 0.05). Conclusions Both bleaching agents produced a bleaching effect, but 10% CP/PF was more effective. Clinical Significance A pre‐loaded tray system may be used for dental bleaching, but it is still less effective than conventional a 10% carbamide peroxide system, irrespective of the initial shade. (J Esthet Restor Dent 29:325–338, 2017)