Evaluation of Sensitivity With and Without Sonic Activation of a Desensitizing Gel Before in Office Bleaching in Adults
- Conditions
- Tooth BleachingDentin Sensitivity
- Interventions
- Other: Control (Without sonic activation)Other: With sonic activation (SMART Device®)
- Registration Number
- NCT03039270
- Lead Sponsor
- Federal University of Amazonas
- Brief Summary
This randomized, controlled clinical trial, triple-blind, split-mouth type was conducted aiming to assess the absolute risk of sensitivity with and without sonic activation of a desensitizing gel previously to the in-office bleaching in adults.
- Detailed Description
This clinical trial evaluated the effect of sonic activation of a desensitizing gel on the occurrence of sensitivity associated with office bleaching. For this, 31 patients had their anterior superior teeth divided into right and left, according to the sonic activation (AS) or not (SS) of the desensitizer. Prior to bleaching, a desensitizing gel containing 5% potassium nitrate and 2% sodium fluoride (Desensibilize KF2%, FGM Dental Products,SC, Brazil) was applied. Sonic activation was performed with a sonic device (Smart, FGM Dental Products, SC, Brazil) at the 170 MHz frequency. A hydrogen peroxide gel (Whiteness HP Maxx, FGM Dental Products, SC, Brazil) was used in two whitening sessions. It was also performed, evaluation of the presence of cracks in enamel, through transillumination. The color change was verified using two color scales and a spectrophotometer. The dental sensitivity was recorded through a sensitivity diary answered by the patient, in the period up to 48 hours after each bleaching session. The absolute risk of tooth sensitivity was compared using the McNemar test (= 5%). The color change was analyzed from the variation of units of scale vita (SGU) and through the value of ΔE, which were compared through Student t test (α = 5%).
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 31
- Patients had at least six upper anterior teeth free of caries and restorations on the vestibular surface, and at least one central or canine incisor showing A2 or darker coloration, evaluated in comparison with a visual scale of color orientated by the value of the teeth (Vita Classical, Vita-Zahnfabrik- Germany).
- Users of fixed orthodontic appliances, pregnant or lactating, with the presence of severe intrinsic stains on the teeth (spots on the use of tetracycline, fluorosis and depolluted teeth), who were taking any medication with action Anti-inflammatory and antioxidant, using desensitizing dentifrice and participants with previous history of dental sensitivity or any associated pathology (bruxism, gingival recession, non-carious lesion with dentin exposure).
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Control (Without sonic activation) Control (Without sonic activation) Desensitizing gel applied without sonic activation, for 10 minutes, previously to the in-office bleaching. With sonic activation (SMART Device®) With sonic activation (SMART Device®) Desensitizing gel applied with sonic activation, 30 seconds per tooth, previously to the in-office bleaching.
- Primary Outcome Measures
Name Time Method Absolute risk of tooth sensitivity Throughout two bleaching sessions, in the period immediately after bleaching up to 48 hours. Number of patients experiencing sensitivity at least once during the two whitening sessions.
- Secondary Outcome Measures
Name Time Method Bleaching effectiveness Measured by the difference between the baseline color and 30 days after the second bleaching session. Change of color of teeth after bleaching.
Intensity of pain experienced, as measured by two pain scales. Throughout two bleaching sessions, in the period immediately after bleaching up to 48 hours. Intensity of pain experienced
Trial Locations
- Locations (1)
Faculty of Dentistry, Federal University of Amazonas
🇧🇷Manaus, Amazonas, Brazil