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Tiny tooth ridges may change how we see a smile

NCT ID NCT07379671

Knowledge-focused Sponsor: Marmara University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at how small bumps called mamelons on the edges of front teeth affect how attractive a smile looks. Researchers showed 135 people (dentists, specialists, and non-dentists) digitally altered photos of smiles with different mamelon sizes and shades. Participants rated the smiles on a scale from 0 to 100. The goal was to understand what makes a smile appear more or less attractive.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

135 people

The number who actually took part.

Started

Sep 2024

Finished

Dec 2024

Lead sponsor

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

A total of 135 adult participants were included in the study. The study population comprised equal numbers of laypersons, licensed dentists, and dental specialists in Restorative Dentistry or Prosthodontics (n = 45 per group).

Ages

18 to 70 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: * Age ≥18 years * Ability to understand the study information and provide informed consent * Participation on a voluntary basis * Completion of the online survey only once * Belonging to one of the following observer groups: * Laypersons with no dental education * Licensed dentists * Dental specialists in Restorative Dentistry or Prosthodontics Exclusion Criteria: * Age \<18 years * Inability to understand the study information or provide informed consent * Incomplete survey response * Multiple survey submissions by the same participant * Participation outside the predefined observer groups * People with mental illness

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Esthetic restorations Perception Restorative experiences

Contacts and locations

Locations

  • Marmara University

    Istanbul, Maltepe, Turkey (Türkiye)

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