ClinicalTrials.gg
Active, not recruitingNCT07038902MIDPACUpdated Dec 24, 2025

A Comparative Study Between Modified Miniscrew-Assisted Rapid Palatal Expander And Modified Rapid Palatal Expander in Molar Distalization Using Cone- Beam Computed Tomography

An interventional study of Group A: Modified Miniscrew-Assisted Rapid Palatal Expander (MARPE) and Group B: Modified Rapid Palatal Expander (RPE) in Malocclusion, Class I/II, Crowding and Maxillary First Molar Distalization, sponsored by Al-Azhar University. Active, not recruiting at 1 site in Egypt. Per ClinicalTrials.gov, last updated 2025-12-24.

Sponsored by Al-Azhar University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
24
Allocation
Randomized
Sex
All
01

Study summary

Comparative study between modified miniscrew-assisted rapid palatal expander and modified rapid palatal expander in molar distalization using CBCT.

Read the detailed description

This research will be conducted as a prospective and randomized clinical trial.

02

Conditions studied

  • Malocclusion, Class I/II
  • Crowding
  • Maxillary First Molar Distalization

Keywords

  • Modified MARPE
  • Modified RPE
  • Molar Distalization
  • CBCT
  • Orthodontics
03

In context

Malocclusion

323 studies on the registry are indexed under Malocclusion; 85 are open to participants now.

This study's planned enrollment of 24 is below the median of 37 across 242 interventional studies indexed under Malocclusion.

Browse Malocclusion studies →

Lead sponsor

Al-Azhar University is the lead sponsor of 531 studies on the registry; 172 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Presence of permanent dentition
  • Skeletal Class I
  • Dental Class II molar relationship with moderate dental crowding
  • Crowding >4mm
  • Good oral hygiene
  • Healthy periodontal condition

Exclusion criteria

Exclusion Criteria:

  • Presence of craniofacial syndromes or cleft palate
  • History of previous orthodontic treatment
  • Poor oral hygiene or active periodontal disease
  • to CBCT imaging (e.g., pregnancy, inability to remain still during the scan)
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
24 participants (estimated)

Study arms

  • Experimental
    Modified Miniscrew-Assisted Rapid Palatal Expander (MARPE)

    Device: Group A: Modified Miniscrew-Assisted Rapid Palatal Expander (MARPE)

  • Experimental
    Modified Rapid Palatal Expander (RPE)

    Device: Group B: Modified Rapid Palatal Expander (RPE)

Interventions

  • DeviceGroup A: Modified Miniscrew-Assisted Rapid Palatal Expander (MARPE)

    A skeletal anchorage-supported with miniscrews inserted into the palate using a self-drilling technique.

  • DeviceGroup B: Modified Rapid Palatal Expander (RPE)

    A tooth-borne anchorage focusing on molar distalization .

06

What researchers measure

Primary outcomes

  1. Amount of Molar Distalization Measured by CBCT

    Time frame: Baseline (prior to initiation of molar distalization) At the end of the molar distalization phase (approximately 12 weeks post-treatment initiation).

07

Study locations

1 site
  • Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University, Assiut branch.
    Asyut, Egypt
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 24, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07038902
Responsible party
Marwa Abd ELhamid Ahmed Abu Elhagag (Principal Investigator, Clinical Researcher, Al-Azhar University (Assiut branch), Al-Azhar University) — Principal investigator
First posted
Jun 26, 2025
Start date
Nov 1, 2025
Primary completion
Dec 1, 2026 (estimated)
Completion
Dec 1, 2027 (estimated)
Last update
Dec 24, 2025

Study contacts

Mohammed Ahmed Salim, Professor
study director · Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University, Assiut branch.

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.

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