Which tooth whitening method causes less pain? new study compares

NCT ID NCT07669324

Completed Symptom relief Sponsor: Nahda University Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested two ways to whiten teeth: a chemical bleaching gel and a light-activated bleaching gel. Thirty adults with yellowish or brownish stains on their front teeth were randomly assigned to one of the two methods. Researchers measured how white teeth got, how much tooth sensitivity people felt, and how satisfied they were with the results over one to three months.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: tooth bleaching gel (chemical or light-activated)
What this could lead to: If successful, this could help dentists choose a bleaching method that whitens teeth effectively while causing less tooth sensitivity.
What could go wrong: This is a small, completed study with only 30 participants, so results may not apply to everyone. Tooth sensitivity is a known side effect of bleaching.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

dentin sensitivity

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

DENTIN HYPERSENSITIVITY

Contacts and locations

Locations

Nahda University

Banī Suwayf, Beni Suweif Governorate, 62511, Egypt

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