Ignite Creation Date:
2025-12-25 @ 4:55 AM
Ignite Modification Date:
2025-12-26 @ 3:55 AM
Study NCT ID:
NCT07301918
Status:
NOT_YET_RECRUITING
Last Update Posted:
2025-12-24
First Post:
2025-11-21
Is NOT Gene Therapy:
False
Has Adverse Events:
False
Brief Title:
Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite.
Sponsor:
Cairo University
Organization:
Study Overview
Official Title:
Evaluation of the Effects of the Leaf Expander Versus Hyrax Expander in Mixed Dentition Patients With Posterior Crossbite: A Randomized Clinical Trial.
Status:
NOT_YET_RECRUITING
Status Verified Date:
2025-12
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief 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.
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.
Detailed Description:
Participants receive a banded maxillary expansion appliance cemented to maxillary first permanent molars, assigned to:
Leaf expander arm: Nickel-titanium leaf-spring expander, 9 mm screw, delivering force of \~900 g.
Hyrax expander arm: Conventional tooth-borne jackscrew expander, 9 mm screw. Standard activation: two turns per week.
Retention: Both appliances kept passively in situ for 6 months of retention following achievement of planned expansion.
Leaf expander arm: Nickel-titanium leaf-spring expander, 9 mm screw, delivering force of \~900 g.
Hyrax expander arm: Conventional tooth-borne jackscrew expander, 9 mm screw. Standard activation: two turns per week.
Retention: Both appliances kept passively in situ for 6 months of retention following achievement of planned expansion.
Study Oversight
Has Oversight DMC:
True
Is a FDA Regulated Drug?:
False
Is a FDA Regulated Device?:
False
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: