NCT03039270

Evaluation of Sensitivity With and Without Sonic Activation of a Desensitizing Gel Before in Office Bleaching in Adults

Sensitivity Absolute Risk Evaluation With and Without Sonic Activation of a Desensitizing Gel Previously to in Office Bleaching in Adults.

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 31 (actual)
• Sponsor: Federal University of Amazonas · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

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%).

Conditions

• Dentin Sensitivity
• Tooth Bleaching

Interventions

Type	Name	Description
OTHER	With sonic activation (SMART Device®)	The operator applied a desensitizing gel containing 5% potassium nitrate and 2% sodium fluoride (Desensibilize KF 2%, FGM, SC, Brazil) on the vestibular surfaces of the participant's anterior teeth. In the sonic activation side, immediately after the gel's application, sonic activation(Smart Sonic Device, FGM, SC, Brazil) was performed for 1.5 minutes in total for side (30 seconds per tooth). After the time of 30 seconds in each of the three anterior teeth of the respective side, the gel was removed from teeth with cotton. After removal of the desensitizing gel, gingival tissues were isolated and the bleaching gel were applied.
OTHER	Control (Without sonic activation)	The operator applied a desensitizing gel containing 5% potassium nitrate and 2% sodium fluoride (Desensibilize KF 2%, FGM,SC, Brazil) on the vestibular surfaces of the participant's anterior teeth. In the side allocated for application without sonic activation, gel was kept for 10 minutes, after which it was removed from the teeth. After removal of the desensitizing gel, gingival tissues were isolated and the bleaching gel were applied.

Timeline

• Start date: 2016-01-18
• Primary completion: 2016-03-31
• Completion: 2016-04-15
• First posted: 2017-02-01
• Last updated: 2017-02-01

Locations

1 site across 1 country: Brazil