Evaluation of dental bleaching with 35% hydrogen peroxide compared with laser applicatio

Not Applicable

• Conditions: Dentin Sensitivity. Tooth Discoloration.

• Registration Number: RBR-55swq5
• Lead Sponsor: niversidade Norte do Paraná

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2019-09-20
• Last Update Posted: 29 May 2023

Recruitment & Eligibility

• Status: ot yet recruiting
• Sex: Not specified
• Target Recruitment: Not specified

Inclusion Criteria

Patients with good general health will be included; age between 18-50 years of age; good oral hygiene; absence of caries in the anterior and inferior teeth; absence of palatal and vestibular restorations; upper canine with A2 or darker shading, which will be evaluated with Vita Classical scale (VITA Classical Shade, Vita Zahnfabrik, Bad Säckingen, Germany).

Exclusion Criteria

Patients will be excluded: undergoing previous bleaching procedures; That have restorations on the anterior superior teeth; Who have canal treatment in the anterior teeth; Pregnant and / or breastfeeding; With severe internal discoloration (tetracycline, spots, fluorosis, non-vital teeth); Parafunctional habits such as bruxism; Or any other pathology that may cause sensitivity

Study & Design

• Study Type: Intervention
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Expected outcome: Number of patients that report spontaneous pain in any moment of the bleaching protocol and up to 48 h post-bleaching, through self-report. This number will be presented as percentage of patients with tooth sensitivity and will be named absolute risk of tooth sensitivity.;Expected outcome: The intensity of tooth sensitivity will be assessed using the numeric 5-point scale (NRS 0-4) and the visual analogue scale (VAS 0-10) and will be presented as means and standard deviations in different periods (during dental bleaching, up to 1 h, 1 h to 24 h and 24 h to 48 h post-bleaching).

Secondary Outcome Measures

Name	Time	Method
Expected outcome: The difference in color between the baseline condition and 1 month post-bleaching will be assessed by Vita Classical and Bleachedguide Vita shade guide as well as with the Vita Easyshade spectrophotometer. The data will be presented as means and standard deviations.