Tooth sensitivity in different dental arches after in-office dental whitening

Not Applicable

• Conditions: Dentin Sensitivity; Tooth Discoloration

• Registration Number: RBR-8dz9zvq
• Lead Sponsor: niversidade Estadual de Ponta Grossa

Brief Summary

The thickness of teeth undergoing whitening can directly influence the amount of peroxide that reaches the pulp chamber, causing different levels of tooth sensitivity. The aim of this study is to compare the risk and intensity of tooth sensitivity and the effectiveness of whitening in the upper and lower arches after in-office teeth whitening. 90 participants were randomly divided into two groups according to the arch in which they received a 35% hydrogen peroxide gel first (1 x 30 minutes; 1 week apart). Tooth sensitivity was recorded immediately after, up to 1 h, 24 h and 48 h after whitening, using the VAS scale of 0-10. Whitening efficacy was evaluated before bleaching and 15 days after the end of treatment. Tooth sensitivity was compared using McNemar's exact test (a = 0.05), paired t-test, and One-way ANOVA. Whitening efficacy was compared using the paired t-test. The risk and intensity of tooth sensitivity was statistically higher for the lower arch (p = 0.0021 and p = 0.003, respectively). Both arches demonstrated significant whitening efficacy, with no differences between the arches (p > 0.05). In-office tooth whitening induced a greater risk of tooth sensitivity in the lower arch when compared to the upper arch, without significant differences in whitening effectiveness. .

Detailed Description

Not available

Study Timeline

• Study Completion: 2024-05-30
• Study Start: 2024-06-24
• Last Update Posted: 22 July 2024

Recruitment & Eligibility

• Status: Data analysis completed
• Sex: Not specified
• Target Recruitment: Not specified

Inclusion Criteria

Patients at least 18 years old; both genders; with good oral and general health; have their maxillary anterior teeth free from restorations, carious lesions, gingival recessions or periodontal disease; canines with color A2 or darker according to the Classical Vita scale (Vita Zahnfabrik, BadSäckingen, Germany); to agree with the free and informed consent form

Exclusion Criteria

Previous dental whitening; previous tooth sensitivity; pregnant or breastfeeding women; severe tooth darkening (tetracycline staining; fluorosis or endodontics); previous dental restorations; previous endodontic treatment; visible cracks; dentures or orthodontic appliances; oral pathologies; bruxism; smokers; patients with gastric, cardiac, renal or hepatic problems; diabetics; hypertensive patients; continuous use of analgesic and anti-inflammatory medication

Study & Design

• Study Type: Intervention
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Expected outcome 1: It is expected to find a reduction in tooth sensitivity after using hydrogen peroxide whitening gel in the superior arch, at some point up to 48 hours after each session, by using the VAS visual analog scale (0 to 10). Percentage of patients with pain will be called absolute risk of tooth sensitivity.;Outcome found 1: A reduction in tooth sensitivity was found after the use of hydrogen peroxide whitening gel in the upper arch, after each whitening session, when assessed using the VAS visual analog scale (0 to 10). The percentage of patients with pain, called absolute risk of tooth sensitivity, was 75%.