Whitening Efficacy and Tooth Sensitivity of Different Concentrations of Hydrogen Peroxide Photoactivated With Violet or Blue LEDs

Not Applicable

Completed

• Conditions: Bleaching Sensitivity; Color
• Interventions: Other: 35% hydrogen peroxide gel + blue LED; Other: 6% hydrogen peroxide gel + blue LED; Other: 35% hydrogen peroxide gel + violet LED; Other: 6% hydrogen peroxide gel + violet LED

• Registration Number: NCT06165458
• Lead Sponsor: Universidade Federal do Para

Brief Summary

This is a randomized, controlled, double-blind and repeated-measures clinical trial evaluated the photoactivation of hydrogen peroxide gels in different concentrations with blue or violet LED in terms of whitening efficacy and tooth sensitivity.

Detailed Description

Not available

Study Timeline

• Study Start: 2021-01-12
• Primary Completion: 2021-11-03
• Study Completion: 2022-02-15
• Status Verified: 2023-12
• Study First Submitted: 2023-12-02
• Study First Submitted QC: 2023-12-02
• Last Update Submitted: 2023-12-09
• Study First Posted: 2023-12-11
• Last Update Posted: 2023-12-15

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 40

Inclusion Criteria

• at age 18 or older, with good general and oral health;
• possessing all six natural and healthy upper anterior teeth with a color shade of A2 or darker, determined by comparison with the Vita Classic scale;

Exclusion Criteria

• pregnant and breastfeeding women;
• individuals with internal tooth discoloration (tetracycline stains, fluorosis or hypoplasias);
• smokers, or those with veneers or restorations on the teeth in questions were excluded;
• gingival recession;
• dentin exposure;
• periodontal disease.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: FACTORIAL

Arm && Interventions

Group	Intervention	Description
HP35B	35% hydrogen peroxide gel + blue LED	35% hydrogen peroxide gel + blue LED
HP6B	6% hydrogen peroxide gel + blue LED	6% hydrogen peroxide gel + blue LED
HP35V	35% hydrogen peroxide gel + violet LED	35% hydrogen peroxide gel + violet LED
HP6V	6% hydrogen peroxide gel + violet LED	6% hydrogen peroxide gel + violet LED

Primary Outcome Measures

Name	Time	Method
Color	Color assessment was carried out before bleaching, 1 week after bleaching and 3 months after bleaching	A operator measured the color of the six upper anterior teeth using a digital spectrophotometer (VITA Easyshade V, Wilcos, Petrópolis, RJ, Brazil).
Bleaching Sensitivity	Assessments were carried out three times: before bleaching, immediately after bleaching, and 24 hours after bleaching.	The degree of tooth sensitivity of patients was recorded using a visual analogue scale (VAS) from 0 to 10, where 0 represents no tooth sensitivity and 10 represents the greatest tooth sensitivity ever felt by the patient.

Trial Locations

Locations (1)

Federal University of Pará; 🇧🇷 Belém, Pará, Brazil