3D-Printed aligners face off against traditional ones in fit test
NCT ID NCT07639515
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study will compare how well two types of clear aligners—one made by 3D printing and the other by traditional thermoforming—fit onto teeth. Twenty healthy adults will wear passive aligners, and the fit will be measured at several time points over two weeks. The goal is to see which method produces a more accurate and consistent fit.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Nov 2026
An estimate. Start dates often move.
- Expected to finish
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Apr 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria * Healthy adult volunteers aged 18 years or older. * Good general and oral health. * Dentition adequate to support passive upper clear aligner wear, as determined by the investigator. * Willing and able to attend all study visits over the 4-6 month study period. * Willing and able to comply with aligner wear and all study procedures. * Able to provide written informed consent and HIPAA authorization. Exclusion Criteria * Active dental or periodontal disease, or any oral condition that could interfere with study procedures. * Need for active orthodontic treatment or other dental procedures during the study period. * Poor oral hygiene or failure to follow study instructions at the screening visit. * Medical or systemic conditions, or use of medications, that could compromise participation or study outcomes. * Concurrent participation in another interventional research study. * Pregnancy or planned pregnancy during the study period (if applicable).
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.