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Quad Helix vs RME for Posterior Cross-bite in Egyptian Children

NCT07500194 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2026-03-30

No results posted yet for this study

Summary

This randomized clinical trial aims to evaluate and compare the effectiveness of the Quad Helix (QH) appliance versus Rapid Maxillary Expanders (RME) in treating posterior cross-bite in Egyptian children during the mixed dentition stage. The study will also assess patient comfort and pain levels associated with each appliance.

Conditions

  • Posterior Crossbite
  • Maxillary Expansion
  • Transverse Maxillary Deficiency

Interventions

DEVICE

Quad Helix(QH) Appliance

It is a fixed orthodontic appliance fabricated using stainless-steel wire and soldered to bands on upper first permanent molars.

DEVICE

Rapid Maxillary Expanders

It is a fixed expansion device bonded on the upper first permanent molars and pre-molars. Activation is done at a rate of 0.25 mm twice daily (two turns per day)

Sponsors & Collaborators

  • Al-Azhar University

    lead OTHER

Principal Investigators

  • Al Dany Atwa Mohamed, Professor · Faculty of dental medicine(boys) Cairo ,Al Azhar University

  • Mahmoud Mohamed Fathy Abo ELMahasen, Associated Professor · Faculty of dental medicine(boys) Cairo ,Al Azhar University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
9 Years
Max Age
12 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-03-30
Primary Completion
2027-12-30
Completion
2028-03-31

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07500194 on ClinicalTrials.gov