Clinical trial Recruiting at 1 site Interventional Ages 16 to 30

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 typeInterventional
Ages16 Years to 30 Years
SexAll
Enrollment28 (estimated)
SponsorUniversity of Baghdad
Academic / other
Locations1 site (Baghdad, Al-Russafa)
StatusRecruiting
StartedFebruary 1, 2025
Main results expectedSeptember 1, 2026
Study endsApril 1, 2027
Registry record updatedSeptember 24, 2025
Trial IDNCT07191158 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.

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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

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.