Shorter gaps between whitening sessions may not increase tooth pain
NCT ID NCT06394557
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested whether waiting 2 days or 7 days between in-office teeth whitening sessions affects tooth sensitivity. 47 adults with dark teeth received two bleaching sessions using a 35% hydrogen peroxide gel. Their pain levels were recorded for 48 hours after each session, and color change was measured after 30 days. The goal was to see if a shorter interval causes more discomfort.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
35% Hydrogen Peroxide bleaching gel
What this could lead to
If successful, this could help dentists choose a bleaching schedule that reduces tooth sensitivity while still achieving good whitening results.
What could go wrong
This is a small, completed trial with only 47 participants, so results may not apply to everyone. Tooth sensitivity varies widely between individuals.
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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Universidade Federal Fluminense - School of Dentistry
Nova Friburgo, Rio de Janeiro, 28625-650, Brazil