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

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

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).

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).

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