Actively Recruiting
Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.
Led by Cairo University · Updated on 2026-03-18
30
Participants Needed
1
Research Sites
73 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
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
Official Title
Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Male and female patients
- Mixed dentition stage
- Unilateral or bilateral posterior crossbite
- Prepubertal stage with cervical vertebral maturation stage 1-3
- Fully erupted maxillary and mandibular permanent first molars
- Skeletal class I or II
You will not qualify if you...
- Previous orthodontic treatment
- Missing teeth
- Inadequate oral hygiene
- Presence of bad oral habits
- Medical conditions
- Cleft lip and palate
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Cairo University
Cairo, Egypt
Actively Recruiting
How is the study designed?
Study Type
INTERVENTIONAL
Masking
SINGLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
OTHER
Number of Arms
2
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