Which tooth whitening method causes less pain? new study compares
NCT ID NCT07669324
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.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Nahda University
Banī Suwayf, Beni Suweif Governorate, 62511, Egypt