Completed PHASE1 INTERVENTIONAL 4-arm NCT03434782

Effect of Laser and Potassium Nitrate Application on the Sensitivity Control in Bleached Teeth

Effect of Low-level Light Therapy Associated With Potassium Nitrate in the Control of Post-bleaching Dental Sensitivity: a Randomized, Double-blind, Split-mouth, Controlled Trial

Sponsor: Conselho Nacional de Desenvolvimento Científico e Tecnológico

Conditions Dentin Sensitivity

Interventions 5% potassium nitrate / 2% sodium fluoride gel In-office dental bleaching Low Level Laser Therapy

Updated 6 times since 2018 Last updated: Feb 13, 2018 Started: Apr 24, 2017 Primary completion: Nov 24, 2017 Completion: Jan 15, 2018

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A PHASE1 clinical study on Dentin Sensitivity, this trial is completed. The trial is conducted by Conselho Nacional de Desenvolvimento Científico e Tecnológico and has accumulated 6 data snapshots since 2017. Longitudinal tracking of this trial contributes to a broader understanding of treatment development timelines.

Status Flow

Change History

6 versions recorded

Sep 2025 — Present [monthly]

Completed PHASE1
Sep 2024 — Sep 2025 [monthly]

Completed PHASE1
Jul 2024 — Sep 2024 [monthly]

Completed PHASE1
Jan 2021 — Jul 2024 [monthly]

Completed PHASE1
Jun 2018 — Jan 2021 [monthly]

Completed PHASE1

▶ Show 1 earlier version

Mar 2018 — Jun 2018 [monthly]

Completed PHASE1

First recorded

Apr 2017

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Conselho Nacional de Desenvolvimento Científico e Tecnológico
Universidade Federal do Para

Data source: Universidade Federal do Para

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Belém, Brazil