Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.
Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age6-12
SponsorCairo University
About this trial
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.
Eligibility criteria
Qualifiers
Male and female patients
Mixed dentition stage
Unilateral or bilateral posterior crossbite.
Patients in prepubertal stage with cervical vertebral maturation stage 1-3.
Disqualifiers
Previous orthodontic treatment.
Missing teeth.
Inadequate oral hygiene.
Patients with bad oral habits.
Trial design
Treatments tested in this trial
- The Leaf expander
- Hyrax expander
Treatment groups
30 Participants
are divided into 2 treatment groupsSponsors and collaborators
Source ClinicalTrials.gov