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

TC Erciyes University

Status: Completed

Conditions: Transverse Maxillary Deficiency

Treatments: Device: skeletal anchorage and rapid palatal expansion

Study type: Interventional

Funder types: Other

Identifiers

NCT05930054

TDH-2020-10444

Details and patient eligibility

About

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.

Full description

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.

Enrollment: 18 patients

Sex: All

Ages: 14 to 17 years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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18 participants in 2 patient groups

tooth-bone-borne (TBB) group

Other group

Description:

The TBB appliance was composed of a central expansion jackscrew (Dentarum), 4 tubes, 2 bands on the upper first molars to facilitate placement of the appliance, and 1.5-mm diameter stainless steel arms extending to the premolar teeth. Soldered stainless steel tubes (internal diameter: 2.0 mm; external diameter: 3.0 mm; length: 2.0 mm) served as guides for miniscrew placement. The size of the screws (PSM) was chosen as 1.8 mm in diameter and 11 mm in length, considering the 2 mm height of the tubes, 1 to 2 mm gap between the appliance and the palate surface, 1 to 2 mm gingiva thickness, and 5 to 6 mm length required for the bicortical placement of the screw in the bone.

Treatment:

Device: skeletal anchorage and rapid palatal expansion

bone-borne (BB) group

Other group

Description:

The BB appliance was composed of a central expansion jackscrew, 4 tubes as described in TBB group, and less acrylic used around it to adjust its position. In order to carry it to the mouth after preparation on the cast model, essix was used, which also included the patient's teeth

Treatment:

Device: skeletal anchorage and rapid palatal expansion