Effect of prior application of 10% potassium nitrate in reducing tooth sensitivity resulting from in-office dental bleaching: a randomized clinical trial, triple blind, placebo-controlled, split-mouth

Not Applicable

Recruiting

• Conditions: Dentin sensitivity, Dental bleching; E06.420.750; C07.793.266

• Registration Number: RBR-836wwd
• Lead Sponsor: niversidade Estadual de Ponta Grossa - UEPG

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2016-04-08
• Last Update Posted: 29 May 2023

Recruitment & Eligibility

• Status: Recruiting
• Sex: Not specified
• Target Recruitment: Not specified

Inclusion Criteria

Patients older than 18 years are included; with good oral and general health; with the maxillary anterior teeth free restorations and presenting no carious lesion; which possess the color of teeth A2 or darker depending on the color scale Vita Classical (Vita Zahnfabrik, Bad Säckingen, Germany) and to agree with the free and informed consent form.

Exclusion Criteria

Patients will be excluded who have already performed dental whitening; pregnant patients or lactating; who report tooth sensitivity; severe browning (staining by tetracycline, fluorosis or endodontics); with deleterious habits; people with dental prostheses and orthodontic appliances and any other oral pathology . Although patients will be excluded that present systemic changes such as stomach, heart, kidney and liver problems, diabetes, hypertension or are making continual use of drugs with analgesic and anti-inflammatory.

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.

Secondary Outcome Measures

Name	Time	Method
Expected outcome: The intensity of tooth sensitivity will be evaluated through the records made by patients with the use of numerical scales of 5 points (NRS 0-4) and visual analogue scale VAS (0-10). Values are presented as mean and standard deviation for the different evaluated periods (during tooth whitening by 1 h, 1 h to 24 h and 24-48 h post-bleaching).;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.