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Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.

NCT07301918 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 30

Last updated 2026-03-18

No results posted yet for this study

Summary

Design: Two-arm parallel randomized clinical trial in mixed dentition (6-12 years).

Arms: (1) 9 mm, 900 g leaf expander; (2) 9 mm Hyrax expander. Follow-up: From appliance insertion → completion of intended expansion → 6-month retention.

Primary outcome: Pain perception during the first 7 days post-insertion (daily patient-reported scale).

Secondary outcomes: Skeletal and dental changes on CBCT.

Conditions

  • Posterior Crossbite
  • Maxilla; Hypoplasia

Interventions

DEVICE

The Leaf expander

The Leaf expander incorporates Nickel Titanium springs that will not require the patients' home activation

DEVICE

Hyrax expander

Hyrax expander incorporates a screw that requires the patients' home activation

Sponsors & Collaborators

  • Cairo University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Model
PARALLEL

Eligibility

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

Timeline & Regulatory

Start
2025-10-01
Primary Completion
2027-03-31
Completion
2027-03-31

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 NCT07301918 on ClinicalTrials.gov