Baby teeth gaps: do they make smiles less attractive?
NCT ID NCT07480239
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This study looks at how gaps between baby teeth and uneven tooth sizes affect how people see a child's smile. Researchers will take photos of children's smiles and digitally change them to create different spacing and tooth size patterns. Then, adults like dental students and parents will rate how attractive each smile looks. The goal is to understand what makes a child's smile seem more or less beautiful.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 234 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2026
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.
Who is studied
The study population will consist of adult participants aged 18 years and older, including dental students and parents attending the Department of Pediatric Dentistry for their children's routine dental treatment. Participants will evaluate digitally modified smile photographs representing different interdental spacing patterns and crown width discrepancies in primary dentition using a visual analog scale (VAS).
- 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.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * For photographic records (two children): * Children without any systemic disease * Children in the primary dentition stage * Children able to cooperate during the photographic procedure * Children whose parents or legal guardians have provided written informed consent for participation and for the use of smile photographs * One child presenting physiologic interdental spacing * One child presenting no physiologic interdental spacing For esthetic perception evaluation: * Third-, fourth-, or fifth-year dental students * Parents presenting to the Department of Pediatric Dentistry for their children's routine dental treatment * Individuals who voluntarily agree to participate and provide informed consent Exclusion Criteria: * Photographs that do not comply with the standardized photography protocol defined in the study * Multiple photographs taken of the same teeth or the same tooth surfaces * Out-of-focus or blurred images * Images that are overexposed, underexposed, or taken under inadequate lighting conditions * Photographs with saliva contamination or other artifacts affecting image quality * Participants who do not complete the evaluation of all images
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
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How to take part
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The official record
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A doctor treating you
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