Digital vs. plaster: can 3D scans replace traditional dental casts?
NCT ID NCT07745855
First seen Aug 04, 2026 · Last updated Aug 06, 2026 · Updated 2 times
Summary
This study asks whether 3D digital models can measure dental crowding as accurately and reliably as traditional plaster models. Researchers will compare Little's Irregularity Index scores from digital scans, plaster model photos, and intra-oral photos in 20 people with mild to moderate crowding and Class I malocclusion. The goal is to see if digital methods can be trusted for routine orthodontic assessment.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If digital models prove as reliable as plaster ones, dentists may be able to assess dental crowding more quickly and conveniently without physical casts.
- What could go wrong
- This is a small study with only 20 participants, so results may not apply broadly. It focuses on measurement accuracy, not treatment outcomes.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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20 people
The number who actually took part.
- Started
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Jun 2021
- Finished
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Dec 2024
- 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
Study models with their corresponding direct digital intra-oral models and photos are obtained from Egyptian females patients from Cairo\_Patients are medical free from systemic disease with age range 13-18 years suffering from mild to moderate anterior teeth crowding with class I malocclusion
- Ages
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13 to 18 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: * Standardized study models for patients with a full set of permanent teeth (the third molars are not considered). * All study models for patients with Angle class I malocclusion. * All study models for patients with mild to moderate anterior teeth crowding in both arches * Corresponding standardized direct scanned intraoral digital models for all selected study models * Corresponding standardized digital photos for all selected study models * Corresponding standardized digital intra-oral photos for all selected study models Exclusion criteria: * Damaged or distorted study models * Unclear or distorted digital models (STL file) * Unclear or distorted digital photos of study models (JPG File) * Unclear or distorted intra-oral photos (JPG File)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Faculty of Dentistry
Cairo, Nasr City, 11884, Egypt
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