Digital dental scans may beat goopy impressions for speed and comfort
NCT ID NCT07705009
First seen Jul 15, 2026 · Last updated Jul 16, 2026 · Updated 1 time
Summary
This trial compares two ways of taking dental impressions: the traditional method using alginate (a goopy material) and digital scanning with two different intraoral scanners. The study involves 171 dental students aged 18 to 24, who are randomly assigned to one of the three techniques. Researchers measure how long each procedure takes and ask participants about their comfort, nausea, pain, and overall satisfaction right after the impression is made.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- intraoral scanning (TRIOS 3 and Medit i700) compared with conventional alginate impressions
- What this could lead to
- If digital scanning proves faster and more comfortable, it could become the preferred method for dental impressions in young adults.
- What could go wrong
- This is a small, single-center study in healthy dental students, so results may not apply to older patients or those with complex dental conditions.
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.
- 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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171 people
The number who actually took part.
- Started
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May 2025
- Finished
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Aug 2025
- 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 to 24 years
- 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: * Undergraduate dental students at the University of Medicine and Pharmacy, Hue University. * Aged 18 to 24 years. * Willing to undergo one maxillary and one mandibular dental impression using the assigned technique. * Willing and able to complete the study questionnaire. * Provided written informed consent. Exclusion Criteria: * Currently undergoing orthodontic treatment. * Presence of a systemic disease or acute condition that limited the ability to cooperate or increased the risk of discomfort during impression taking or intraoral scanning, including an acute respiratory disorder or frequent vomiting. * Limited mouth opening or an oral and maxillofacial condition that prevented correct impression-tray seating or scanner-tip placement according to the study protocol. * A maxillofacial abnormality that markedly affected the procedure or caused significant recording distortion. * An excessive gag reflex that prevented completion of the assigned procedure.
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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 Odonto-Stomatology, University of Medicine and Pharmacy, Hue University
Huế, 530000, Vietnam
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