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Dentin hypersensitivity after teeth bleaching with in-office systems. Randomized clinical trial

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Martin, Javier
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Dentin hypersensitivity after teeth bleaching with in-office systems. Randomized clinical trial
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  • Martin, Javier;
  • Fernández Godoy, Eduardo;
  • Bahamondes, Valeria;
  • Werner, Andrea;
  • Elphick, Klaus;
  • Oliveira, Osmir;
  • Moncada, Gustavo;
Abstract
PURPOSE: To comparatively and prospectively compare in a randomized clinical trial, dentin hypersensitivity after treatment with three in-office bleaching systems, based on hydrogen peroxide at different concentrations, with and without light source activation. METHODS: 88 individuals were included according to inclusion and exclusion criteria. Subjects were randomly divided into the following three treatment groups: Group 1 was treated with three 15-minute applications of hydrogen peroxide at 15% with titanium dioxide (Lase Peroxide Lite) that was light-activated (Light Plus Whitening Lase) with five cycles of 1 minute and 30 seconds each cycle, giving a total treatment time of 45 minutes; Group 2 was treated with three 10-minute applications of hydrogen peroxide at 35% (Lase Peroxide Sensy), activated by light (LPWL) same activation cycles than Group 1, with a total treatment time of 30 minutes; Group 3 was treated with only one application for 45 minutes of hydrogen peroxide at 35% (Whitegold Office) without light activation. Each subject underwent one session of bleaching on the anterior teeth according to the manufacturers' instructions. Dentin sensitivity was recorded with a visual analogue scale (VAS) at baseline, immediately after, and at 7 and 30 days after treatment using a stimulus of an evaporative blowing triple syringe for 3 seconds on the upper central incisors from a distance of 1 cm. A Kruskal-Wallis test followed by Mann-Whitney test was performed for statistical analysis. RESULTS: All groups showed increased sensitivity immediately after treatment. Group 1 displayed less changes relative to baseline with no significant differences (P = 0.104). At 7 and 30 days after treatment, a comparison of VAS values indicated no significant differences between all groups (P = 0.598 and 0.489, respectively).
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URI: https://repositorio.uchile.cl/handle/2250/159088
ISSN: 08948275
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American Journal of Dentistry, Volumen 26, Issue 1, 2013, Pages 10-14.
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