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Evaluation of Sensitivity and Color Change of Different Protocols of In-office Dental Bleaching

NCT07597044 · Status: ACTIVE_NOT_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2026-05-19

No results posted yet for this study

Summary

Clinical randomized single-blind trial, used to measure the level of tooth sensitivity (TS) after in-office dental bleaching sessions, on volunteers using a modified visual analog scale (VAS). The investigators selected for this study, 40 participants with color 2M2 or darker (Using OM1 - 5M3 Vita bleaching shade guide). The investigators performed two bleaching sessions with a 40% hydrogen peroxide gel with a 1-week interval. Participants were enrolled in two groups. In one group, the bleaching product was used according to manufacturer's instructions (40-minutes application in each section). In the other group, the bleaching product was used in two 20-minutes applications in each section.The investigators recorded the TS up to 48h with a VAS scale and the color at baseline and 30 days after bleaching with a value-oriented shade guide and a spectrophotometer. The risk and intensity of TS and the color change were compared between the two groups.

Conditions

  • Tooth Sensitivity

Interventions

PROCEDURE

Standard in-office tooth bleaching

Patients will have their teeth bleached in-office using 40% Hydrogen Peroxide (commercial available product - Opalescence Boost, Ultradent Products International) in two sections with 7 days of interval between sections. In each section, the product will be used during 40 minutes according to manufacturer's instructions.

PROCEDURE

Alternative in-office tooth bleaching

Patients will have their teeth bleached in-office using 40% Hydrogen Peroxide (commercial available product - Opalescence Boost, Ultradent Products International) in two sections with 7 days of interval between sections. In each section, the product will be used during 20 minutes, will be removed with water, and another application of 20 minutes will be made.

Sponsors & Collaborators

  • Universidade Federal Fluminense

    lead OTHER

Principal Investigators

  • MARCOS O BARCELEIRO, PhD · Full Professor

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-10-01
Primary Completion
2026-01-20
Completion
2026-09-30

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07597044 on ClinicalTrials.gov