Scientists compare single vs Multi-Layer aligners for surface changes
NCT ID NCT07449598
First seen Mar 14, 2026 · Last updated Jun 22, 2026 · Updated 19 times
Summary
This study looks at how clear aligners change after being molded and worn for two weeks. Researchers will compare single-layer and multi-layer aligners in 20 people with mild crowding. They will measure surface roughness, hardness, and thickness at three stages: before molding, after molding, and after wear.
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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.
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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Contacts and locations
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Locations
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Mansoura university
Al Mansurah, Egypt
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
clear aligner (device)
What this could lead to
If successful, this could help orthodontists choose better aligner materials for more predictable tooth movement.
What could go wrong
This is a small, early-stage study with only 20 participants and no direct health outcomes. Results may not apply to all aligner brands or clinical situations.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.