Digital showdown: which impression technique fits the resorbed jaw best?
NCT ID NCT07764640
First seen Aug 14, 2026 · Last updated Aug 14, 2026
Summary
This study compares three common dental impression techniques for people with severely resorbed lower jaws who need complete dentures. Using 3D scanning and deviation analysis, researchers will measure which technique produces the most accurate final impression. The goal is to identify a method that could lead to better-fitting dentures and improved comfort for patients with significant bone loss.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Three dental impression techniques: conventional (alginate and zinc oxide eugenol), wax, and compound, each followed by alginate.
- What this could lead to
- If one technique proves more accurate, it could improve the fit and comfort of dentures for people with severely resorbed lower jaws.
- What could go wrong
- This is a small study with only 8 participants, so results may not apply to everyone. The findings are about accuracy, not long-term denture success.
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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8 people
The number who actually took part.
- Started
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Dec 2024
- Finished
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Jun 2026
- 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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Children (under 18), adults (18 to 64) and older adults (65 and over)
- Sex
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Anyone
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: \- Exclusion Criteria:Inclusion Criteria: 1. Completely edentulous patients with severely resorbed mandibular ridges. 2. Patients requiring a mandibular complete denture. 3. Patients able to tolerate the impression procedures and attend the required study visits. 4. Patients willing to participate in the study and provide informed consent. Exclusion Criteria: 1. Patients with systemic or local conditions that contraindicate conventional dental impression procedures. 2. Patients with pathological lesions or significant abnormalities affecting the mandibular denture-bearing area. 3. Patients unable to tolerate or cooperate with the impression procedures. 4. Patients who decline to participate or withdraw their informed consent. -
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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 Dentistry, Tanta University
Tanta, Gharbia Governorate, Egypt