Skeletal Changes Accompanying Surgically Assisted Rapid Maxillary Expansion in Adults A Computed Temography Evaluation
Keywords:Cone beam computed tomography, CBCT, maxillary transverse deficiency, MTD, surgically assisted rapid maxillary expansion, SARME.
Background: Surgically assisted rapid maxillary expansion (SARPE) is a common procedure to correct
maxillary transverse deficiency of >5mm in patients with closed midpalatal suture. The aim of this study was
to three dimensionally analyze skeletal changes afterSARPE.
Studydesign: Twelve adult patients (mean age 20 years)with a palatal transverse deficiency underwent
SARPE. The surgical procedure consisted of a lateral osteotomy combined with an interradicular osteotomy
between the roots of the upper central incisors. Measuring points were defined on the hard palate. Cone
beam computerized tomography scans were performed preoperatively and 6-months postoperatively.
Results: Skeletal changes accompanying SARPE utilizing Hyrax appliance were analyzed.
Conclusions: Bilateral osteotomy combined with a sagital osteotomy is a safe method of SARPE. The
expansion was mostly achieved by maxillary expansion. The amount of dentoalveolar tipping was smaller
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