Effectiveness of Four Mini-screws Supported Hyrax for Maxillary Expansion in Early Adulthood

Cairo University (CU)

Status

Active, not recruiting

Conditions

Transverse Maxillary Deficiency

Treatments

Device: Hybrid hyrax

Study type

Interventional

Funder types

Other

Identifiers

NCT06020183

14623

Details and patient eligibility

About

This study aims to evaluate the Skeletal and Dento-alveolar expansion in adult patents using Four Mini-screws Supported Hyrax in compare with untreated control group.

Full description

Aim of the study: To evaluate the Effectiveness of Four Mini-screws Supported Hyrax for Maxillary Expansion in Early Adulthood

Methodology:

Essential record for orthodontic treatment will be taken.
impression with bands on upper first molars will be taken.
Four eyelets will be soldered to the body of the hyrax appliance (size 10, Dentaurum, Germany).
CBCT will be taken while patient wearing 1 mm thickness vacuum on the lower arch to dis-occlude both arches.
Delivery, check the retention and fitness of the appliance.
The appliance will be cemented using band cement(compomer).
Using 3M contra-angle driver, the screws (Tomas screw size 10, Dentaurum, Germany) will be loaded and inserted.
Activation of the appliance by opening it two turns immediately, followed by two turns everyday till cross bite correction or appearance of midline diastema.
Closure of the device, and leave the appliance in-situ for five months as a retention.
Post-expansion CBCT will be taken and continue fixed orthodontic treatment.

Outcome: skeletal and dento-alveolar expansion will be evaluated

Enrollment

24 patients

Sex

All

Ages

18 to 30 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Unilateral or bilateral Dental posterior cross-bite
Skeletal Maxillary constriction
Male and female patients.
Chronological age (18-30 years).
Mid-palatal suture maturation (Grade C,D ) according to F Angileri classification
Good oral hygiene.
No craniofacial anomalies or syndromes

Exclusion criteria

Scissor-bite
Orthodontically-treated
functional cross bite due to premature occlusal contact
patients with a syndrome
cleft patients
Mid-palatal suture maturation(Grade A.B,E) according to F Angileri classification