Analysis of the dento-skeletal effects using cone beam computed tomography (CBCT) after surgically assisted maxillary expansion in adult patients

• Grant number: 10/15710-5
• Support Opportunities: Regular Research Grants
• Start date: March 01, 2011
• End date: February 28, 2013
• Field of knowledge: Health Sciences - Dentistry - Oral and Maxillofacial Surgery
• Principal Investigator: Osny Ferreira Júnior
• Grantee: Osny Ferreira Júnior
• Host Institution: Faculdade de Odontologia de Bauru (FOB). Universidade de São Paulo (USP). Bauru , SP, Brazil

Abstract

Maxillary transversal deficiency is characterized by unilateral or bilateral posterior cross-bite, crammed and rotated teeth, and narrow palate. Classically, surgically assisted maxillary expansion is the indicated treatment for adult patients, affecting not only the skeleton, but also the teeth (especially the post of the expansion device), nasal cavity and air space, lips, and surrounding soft tissues. The aim of the present study is to evaluate dento-skeletal alterations of patients presenting atrophic maxilla who underwent surgically assisted maxillary expansion using cone beam computed tomography (CBCT). The patients will be submitted to CBCT before and after the surgically assisted maxillary expansion using subtotal Le Fort I osteotomy technique. Measurements of the buccal and palatal cortical bone width will be performed, along with the angulation of the long axis of the upper posterior teeth. Data will be tabulated for statistical treatment. (AU)