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

Cairo University24 enrolled

Overview

The study aiming at evaluation of the Skeletal and Dento-alveolar expansion in adult patents using Two Mini-screws Supported Hyrax compared with untreated control group.

Methodology: * Basic orthodontic record will be taken. * impression with bands on upper first molars will be taken. * Two 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. * Cementation of the appliance 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

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Enrollment

Conditions

Transverse Maxillary Deficiency

Interventions

Hybrid HyraxDEVICE

these patents will be treated using Two mini-screws supported hybrid hyrax

Eligibility

Sex: ALLMin age: 18 YearsMax age: 30 YearsHealthy volunteers:

Medical Language ↔ Plain English

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

Locations (1)

faculty of dentistry, Cairo university

Cairo, Giza Governorate, Egypt

Outcomes

Primary Outcomes

Skeletal maxillary expansion To compare the amount of skeletal expansion pre and post expansion

To compare the amount of skeletal expansion using linear and angular measurements and the expansion pattern of mid-palatal suture extracted from cone beam computed tomography pre and post expansion

Time frame: the outcome will be assessed five months post-expansion

Secondary Outcomes

Dento-alaveolar expansion

To compare the amount of dento-alveolar expansion using linear and angular measurements extracted from cone beam computed tomography pre and post-expansion

Time frame: the outcome will be assessed five months post-expansion

Data from ClinicalTrials.gov

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