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OpenTrials
Active, Not Recruiting

NCT Number: NCT07038902

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

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

Active, Not Recruiting

This study is active but is not currently recruiting participants.

Key information

Conditions

Malocclusion, Class I/II Behavior Crowding Malocclusion Maxillary First Molar Distalization Spatial Behavior Stomatognathic Diseases Tooth Diseases

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Department of Orthodontics, Faculty of Dental Medicine, Al-Azhar University, Assiut branch.

Asyut, Egypt

About this study

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

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

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

Treatment and study plan

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

Device

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

Group B: Modified Rapid Palatal Expander (RPE)

Device

A tooth-borne anchorage focusing on molar distalization .

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).

Sponsors and collaborators

Lead sponsor

Al-Azhar University

Other

Registry information

Acronym: MIDPAC

Important dates

Study start
2025
Primary completion
2026
Study completion
2027
First posted
Jun 26, 2025
Registry last updated
Dec 24, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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