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Dentin hypersensitivity after teeth bleaching with in-office systems. randomized clinical trial
  • University of Chile
  • Universidade Estadual Paulista (UNESP)
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).
Issue Date: 
American Journal of Dentistry, v. 26, n. 1, p. 10-14, 2013.
Time Duration: 
  • hydrogen peroxide
  • photosensitizing agent
  • titanium
  • titanium dioxide
  • tooth bleaching agent
  • adolescent
  • adult
  • comparative study
  • controlled clinical trial
  • controlled study
  • dental procedure
  • dentin sensitivity
  • diode laser
  • double blind procedure
  • female
  • follow up
  • human
  • male
  • methodology
  • pain assessment
  • photochemotherapy
  • phototherapy
  • prospective study
  • randomized controlled trial
  • time
  • Adolescent
  • Adult
  • Dentin Sensitivity
  • Double-Blind Method
  • Female
  • Follow-Up Studies
  • Humans
  • Hydrogen Peroxide
  • Lasers, Semiconductor
  • Male
  • Pain Measurement
  • Photochemotherapy
  • Photosensitizing Agents
  • Phototherapy
  • Prospective Studies
  • Time Factors
  • Titanium
  • Tooth Bleaching
  • Tooth Bleaching Agents
  • Young Adult
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Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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