Effect of Interdental Spacing and Crown Width Discrepancy on Smile Esthetics in Primary Dentition (NCT07480239) | Clinical Trial Compass
Not Yet RecruitingNot Applicable
Effect of Interdental Spacing and Crown Width Discrepancy on Smile Esthetics in Primary Dentition
234 participantsStarted 2026-04
Plain-language summary
This cross-sectional study aims to evaluate how interdental spacing and crown width discrepancies in primary dentition influence the perception of smile esthetics. Standardized smile photographs obtained from children with physiologic spacing patterns will be digitally modified to create different dental scenarios, including variations in interdental spacing, midline deviation, and crown width discrepancies. The images will be presented to adult participants, including dental students and parents, who will evaluate the esthetic appearance of each smile using a visual analog scale (VAS). The study seeks to determine how different spacing patterns and tooth size discrepancies affect the perception of smile esthetics in primary dentition.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
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
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Perception of Smile Esthetics Assessed by Visual Analog Scale (VAS)