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

Not Applicable

Active, not recruiting

Interventions: Device: MSE 2 bands and 4
Device: CH 4 band
Device: HH 2 bands

Brief Summary: 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: 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).

Recruitment & Eligibility

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

Arm && Interventions

Group	Intervention	Description
Maxillary skeletal expander	MSE 2 bands and 4	MSE 2 BANDS AND 4 for expansion of maxilla and observation improvement of the air way
conventional hyrax	CH 4 band	CH 4 BANDS for expansion of maxilla and observation improvement of the air way
Hybrid hyrax	HH 2 bands	HH 2 BANDS for expansion of maxilla and observation improvement of the air way

Primary Outcome Measures

Name	Time	Method
Molar Distance:	6 months	distance in milimeter from mesiolingual cusp of upper first molar in one side to mesiolingual cusp of upper first molar in the other CBCT Measurements software

Secondary Outcome Measures

Name	Time	Method
Molar Inclination	6 months	amount of degree of Molar inclination change before and after maxillary expansion which measured from the long axis of upper first molar to palatal plane by CBCT Evaluation
Maxillary Width	6 months	amount of maxillary width changes by CBCT Evaluation
Temporomandibular Joint	6 months	CBCT Evaluation