Dentoskeletal Changes In The Transverse Dimension Using Tooth Bone-Borne Vs. Bone-Borne Expansion Appliances

Dentoskeletal Changes In The Transverse Dimension Using Tooth Bone-Borne Vs. Bone-Borne Expansion Appliances: A Prospective, Randomized, Double-Blind Clinical Study With Cone-Beam Computed Tomography

This study aimed to investigate the skeletal, dentoalveolar, and periodontal changes of tooth-bone-borne (TBB) and bone-borne (BB) appliances with identical miniscrew placement using cone-beam computed tomography (CBCT) in the post-pubertal growth spurt stage.

Eighteen patients were divided into 2 groups: TBB group (n = 9, 16.11 ± 0.59 years of age) and BB group (n = 9, 15.33 ± 1.22 years of age). CBCT scans were obtained before treatment and after 3 months of expansion. Transverse skeletal and dental expansion, alveolar and tooth inclination, and buccal alveolar bone thickness were evaluated in maxillary first premolars and molars. Paired t tests and independent-sample t tests were used to compare the expansion appliances.

Inclusion Criteria:

• With a unilateral or bilateral morphological lateral crossbite
• Whose first molars and premolars had completely erupted at pretreatment
• With maxillary constriction of more than 4 mm and less than 10 mm
• Who were going through the post-pubertal growth spurt stage based on hand-wrist radiographs

Exclusion Criteria:

• craniofacial anomalies
• compliance problems
• systemic or genetic disease
• previous orthodontic treatment history