Evaluation of the Effect of Three Types of Rapid Maxillary Expanders (Conventional, Hybrid and MSE)

Study Overview
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Brief Summary
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Aim of the study: To compare radiographically the morphometric changes in the nasal airway after using three types of rapid maxillary expansion (RME) conventional hyrax (CH), hybrid hyrax (HH) and maxillary skeletal expander (MSE) using cone beam computed tomography (CBCT).

Detailed Description
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Abstract Aim of the study: To compare radiographically the morphometric changes in the nasal airway after using three types of rapid maxillary expansion (RME) conventional hyrax (CH), hybrid hyrax (HH) and maxillary skeletal expander (MSE) using cone beam computed tomography (CBCT). Material and Methods: A total sample of thirty CBCT of patients presented with constricted maxilla with mean age of 14±3Y was randomized in to three groups. Group 1 CH, group 2 HH and group 3 MSE. CBCT records were taken before(T1) and after six months (T2) of RME; the Airway was segmented and quantified using software (version 5.3.4.39USA).

Official Title
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Evaluation of Three Types of Rapid Maxillary Expanders (Conventional, Hybrid, And MSE) on Maxilla in Adolescent A Randomized Clinical Trial - CBCT Study

Conditions
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Maxillary Retrusion, Nasal Airway Obstruction

Intervention / Treatment
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* Device: CH 4 band
* Device: HH 2 bands
* Device: MSE 2 bands and 4


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients suffering maxillary collapse with a skeletal background Patients with unilateral or bilateral posterior crossbite. Patients with reduced or average anterior face height. Patients with no periodontal disease. Patients with good oral hygiene and general health. No systemic diseases that may affect bone quality or interfere with orthodontic treatment. Patients with erupted maxillary permanent first molars and premolars. Patients with no previous orthodontic treatment. Exclusion Criteria: previous treatment syndromes cleft lip and palate

Ages Eligible for Study
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Minimum Age: 11 Years
Maximum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: conventional hyrax<br>CH 4 BANDS for expansion of maxilla and observation improvement of the air way | Device: CH 4 band<br>* expansion of maxilla and observation improvement of the air way<br>* Other names: Orthodontic rapid maxillary expansion;|
| Active Comparator: Hybrid hyrax<br>HH 2 BANDS for expansion of maxilla and observation improvement of the air way | Device: HH 2 bands<br>* expansion of maxilla and observation improvement of the air way<br>|
| Active Comparator: Maxillary skeletal expander<br>MSE 2 BANDS AND 4 for expansion of maxilla and observation improvement of the air way | Device: MSE 2 bands and 4<br>* expansion of maxilla and observation improvement of the air way<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| maxillary sinus and Pharyngeal airway morphometric dimension changes | CBCT Measurements software | 6 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Molar inclination | amount of Molar inclination by CBCT Evaluation | 6 months | 
| maxillary width | amount of maxillary width changes by CBCT Evaluation | 6 months | 
| temporomandibular joint | CBCT Evaluation | 6 months |