title: Use of anterior maxillary distraction osteogenesis in two cleft lip and palate patients.
abstract: Distraction osteogenesis (DO) has become a mainstream surgical technique for patients with jaw deformities. The aim of this study was to report the effect of DO done by a hyrax screw incorporated in an acrylic plate in the treatment of two maxillary deficient cases with cleft lip and palate. Two patients, a 24-year-old female and a 29-year-old male who suffered from maxillary deficiency and cleft lip and palate, were treated by DO. After making vertical cuts between the premolars on both sides and horizontal cuts similar to Le Fort 1, a hyrax screw was mounted on an acrylic plate for the slow anteroposterior expansion of maxillary arch. The expansion was achieved by turning the hyrax screw 0.8 mm per day after the latency period. Treatment was discontinued after achieving satisfactory over jet and occlusion. This study showed that anterior maxillary distraction is a reliable technique for correction of midfacial deformity arising out of cleft lip and palate. Incidences of complications are negligible compared to total maxillary distraction.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Esic Dental College, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.
authors.forename: Dhirendra
authors.initials: D
authors.lastname: Srivastava
authors.affiliation: Department of Oral, Maxillofacial Plastic and Reconstructive Surgery, University Hospital, Rheinisch-Westfaelische Technische Hochschule Aachen University, Aachen, Germany.
authors.forename: Alireza
authors.initials: A
authors.lastname: Ghassemi
authors.affiliation: Department of Orthodontics, School of Medicine, University of Aachen, Aachen, Germany.
authors.forename: Mehrangiz
authors.initials: M
authors.lastname: Ghassemi
authors.affiliation: Department of Orthodontics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Rahman
authors.initials: R
authors.lastname: Showkatbakhsh
authors.affiliation: Department of Orthodontics, Craniofacial Research Center, Tehran Dental Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Abdolreza
authors.initials: A
authors.lastname: Jamilian
keywords: Cleft lip and palate; Le Fort I osteotomy; distraction osteogenesis; hyrax; maxillary deficiency