3D-printed miniscrew-supported device to move upper molars backward
Official title: Evaluation of Three-Dimensional Printed Orthodontic Molar Distalizer (Randomized Clinical Trial)
Run by University of Baghdad · NCT07191158 · Data updated 2026-11-12
This tests a new 3D-printed miniscrew-supported device against a conventional miniscrew distal-jet to move upper molars back in people with bilateral Class II molar relationships and upper-arch crowding.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 16 Years to 30 Years |
| Sex | All |
| Enrollment | 28 (estimated) |
| Sponsor | University of Baghdad Academic / other |
| Locations | 1 site (Baghdad, Al-Russafa) |
| Status | Recruiting |
| Started | February 1, 2025 |
| Main results expected | September 1, 2026 |
| Study ends | April 1, 2027 |
| Registry record updated | September 24, 2025 |
| Trial ID | NCT07191158 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Patients with bilateral Class II molar relationships, fully erupted upper second molars, upper-arch crowding, good oral health, and no prior orthopedic or orthodontic treatment are ideal candidates.
✕Probably not a fit
Patients with cleft lip/palate or craniofacial syndromes, active periodontal disease, severe maxillary molar rotation, bad oral habits, or prior orthodontic treatment are unlikely to benefit from this approach.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a randomized, two-arm trial comparing a conventional miniscrew-supported distal-jet appliance to a newly designed 3D-printed miniscrew-supported molar distalizer for correction of bilateral Class II molar relationships and upper-arch crowding. Patients will be randomly assigned to one of the two devices and treated until the planned molar distalization is achieved. Lateral cephalometric radiographs and digital upper-arch models will be taken before treatment (T0) and after distalization (T1) to quantify tooth movement and anchorage effects. Device performance, measured tooth movement, and clinical outcomes will be compared between groups to see if the 3D-printed appliance provides equivalent or improved results.
Why it matters
Potential benefit: If successful, the 3D-printed device could provide a more customized fit and potentially faster or more controlled molar distalization with similar or improved comfort.
How similar studies have gone: Miniscrew-supported distalization devices have established clinical evidence, while 3D-printed customized distalizers are a newer approach with limited but emerging clinical data.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. Class II molar relationships bilaterally, with fully erupted 2nd molar. 2. No or minor crowding on the mandible to \[reserve Class I posterior occlusion after treatment. 3. Good oral health free from caries and periodontal problems at the start of treatment. \- Exclusion Criteria: 1. Previous history of orthopedic and/or orthodontic treatment. 2. Patients with cleft lip and palate and/or craniofacial syndrome 3. Patients with bad oral habit. 4. Active periodontal disease. 5. Sever rotation of maxillary molars. -
Where it's running
-
College of Dentistry-University of Baghdad
Baghdad, Al-Russafa, Iraq Recruiting
Study contacts
- Study coordinator: Mushriq Abid Fawzi Professor, PhD
- Email: mushriq.abid@codental.uobaghdad.edu.iq
- Phone: 009647718800706
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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This trial will test whether a miniscrew‑supported palate device (AMDA®) or clear aligners with Class II elastics moves upper first and second molars back more effectively in people with bilateral Class II malocclusion who need molar distalization.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.