Cone Beam Computed Tomography for Evaluating Corticotomy-assisted Maxillary Expansion

Cairo University (CU)

Status: Completed

Conditions: Posterior Cross Bite

Treatments: Procedure: flap with corticotomy and bone allograft

Study type: Interventional

Funder types: Other

Identifiers

NCT02574117

Corticotomy_CBCT

Details and patient eligibility

About

Maxillary expansion was performed for adult female patients suffering from maxillary constriction with bilateral posterior cross-bite using fixed Quad-helix appliance, for about 8 months. The appliance was delivered and activated at the day of corticotomy and bone graft. The activation was made half-molar unit each side. The patient was scheduled each month to activate the appliance or reactivate if needed. Corticotomy was performed at area of maxillary 1st premolar, 2nd premolar and first molar. Cone beam computed tomography was performed, before appliance activation and corticotomy, at the end of expansion (8 months) and after finishing orthodontic treatment (average 2.5 years from start of treatment).

Full description

Maxillary expansion was performed for adult female patients suffering from maxillary constriction with bilateral posterior cross-bite & dental arch discrepancy average 12 mm using fixed Quad-helix appliance, for about 8 months. The appliance was delivered and activated at the day of corticotomy and bone graft (demineralized freeze-dried bone allograft). The activation was made half-molar unit each side. The patient was scheduled each month to activate the appliance or reactivate if needed. Corticotomy was performed at area of maxillary 1st premolar, 2nd premolar and first molar. Cone beam computed tomography was performed at three stages.

T1 (baseline) Before appliance activation and corticotomy. T2 At the end of expansion. (about 8 months of expansion). T3 At the finishing stage of orthodontic treatment (average 2.5 years from start of treatment).

Enrollment: 4 patients

Sex: Female

Ages: 18 to 22 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Adult female patients (18-22 years) suffering from maxillary constriction with bilateral posterior cross-bite.
• Dental arch discrepancy average 12 mm.

Exclusion criteria

• Having any given systemic disease.
• Taking any type of medication and/or antibiotic therapy during the 3 months before the study.
• Didn't perform previous orthodontic treatment.
• Current or former smokers.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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4 participants in 1 patient group

flap with corticotomy and bone allograft

Experimental group

Description:

Maxillary expansion with quad helix appliance was applied to posterior teeth with cross bite. Then corticotomy surgical procedure associated with addition of commercially available bone allograft; demineralized freeze-dried bone allograft on the buccal surface of maxillary 1st premolar, 2nd premolar and 1st molar areas.

Treatment:

Procedure: flap with corticotomy and bone allograft