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Evaluation of In-office Bleaching-induced Sensitivity With 2 or 7 Days Interval Between Sessions
Sponsor: Universidade Federal Fluminense
Summary
Clinical randomized single-blind trial, used to measure the level of tooth sensitivity (TS) after in-office dental bleaching sessions, on volunteers using a modified visual analog scale (VAS). The investigators selected for this study, 47 participants with color 2M2 or darker (Using 0M1 - 5M3 Vita bleaching shade guide). The investigators performed two bleaching sessions with an acidic 35% hydrogen peroxide gel with either a 1-week or 2-day interval. The investigators recorded the TS up to 48 h with a VAS scale and the color at baseline and 30 days after bleaching with a value-oriented shade guide and a spectrophotometer. The risk and intensity of TS and the color change were compared between the two groups.
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
47
Start Date
2023-08-14
Completion Date
2025-12
Last Updated
2025-04-04
Healthy Volunteers
Yes
Conditions
Interventions
In-office Dental Bleaching Conventional
Participants will undergo 2 sessions of in-office dental bleaching, using a 35% Hydrogen Peroxide bleaching gel, with 7 days of interval between sessions. Bleaching gel will be used in 3 15-minutes applications as indicated by the manufacturer. A 2% Potassium Nitrate and Sodium Fluoride desensitizing gel will be applied 15 minutes before the dental bleaching procedure, in both sessions.
In-office Dental Bleaching Alternative
Participants will undergo 2 sessions of in-office dental bleaching, using a 35% Hydrogen Peroxide bleaching gel, with 2 days of interval between sessions. Bleaching gel will be used in 3 15-minutes applications as indicated by the manufacturer. A 2% Potassium Nitrate and Sodium Fluoride desensitizing gel will be applied 15 minutes before the dental bleaching procedure, in both sessions.
Locations (1)
Universidade Federal Fluminense - School of Dentistry
Nova Friburgo, Rio de Janeiro, Brazil