Cephalometric evaluation of patients treated by maxillary anterior segmental distraction: a preliminary report.

OBJECTIVE: The aim of this study was to evaluate the cephalometric results of distraction osteogenesis in patients with premaxillary deficiency. MATERIAL AND METHODS: In this study, an individual tooth-borne distraction device was used for advancement of the maxillary anterior segment. Unilateral or bilateral distraction was performed for 7 patients, according to the specific requirements of the individuals. Cephalometric radiographs were taken before treatment (T0), after distraction (T1), and after consolidation for 8 weeks (T2). RESULTS: Cephalometric analysis revealed that the premaxilla was moved forward and upward and the length of palatal plane increased. CONCLUSION: These alterations improved the soft tissue profile and solved the space deficiency of the maxilla by increasing the arch perimeter.

Osteochondroma of the mandible causing severe facial asymmetry: a case report.

Osteochondroma is one of the most common benign tumors of bone. Although osteochondroma is rarely seen in facial region, the cases in literature are usually in the mandibular region, especially around the condyle. The treatments of these lesions include total condylectomy or local resection of the lesion. The aim of the present study is to emphasize the importance of stereolithographic models in planning tumor surgery and how it affects the treatment planning, operation time and prognosis. In this report, the patient had an osteochondroma in the left condylar region, pushing the condyle seriously to the anterior. The clinical findings were 8 mm deviation of midline to the right side, 23 mm mouth opening, unilateral posterior cross-bite on the right side, and 8 mm negative horizontal overjet. We acquired a 3-dimensional solid model of the patient. Determination of the anatomy of the surgical area, determination of the surgical access method, and other treatment planning were all done on the stereolithographic model. Based on the model evaluation, the tumor was conservatively resected and the condyle left intact, leaving no sequelae. All the preoperative problems were resolved except the midline deviation.

Distraction osteogenesis in a severe mandibular deficiency.

OBJECTIVE: Distraction osteogenesis is an alternative treatment method for the correction of mandibular hypoplasia. In this case report, distraction with a multidirectional extraoral device was performed to gradually lengthen the corpus and ramus of a patient who had a severe hypoplastic mandible. MATERIALS AND METHODS: The patient underwent bilateral extraoral ramus and corpus distraction osteogenesis. After seven days of latency period, distraction was performed 0.5 mm twice a day. Subsequent consolidation period was 12 weeks. RESULTS: The patient's mandible was elongated successfully. Cephalometric analysis revealed that ANB angle decreased from 13 degrees to 6 degrees , overjet of 15 mm decreased to 4 mm, corpus length increased from 49 mm to 67 mm, and ramus length increased from 41 mm to 43 mm. Posterior airway space (PAS) also increased due to advancement of the mandible. In stereolithographic model evaluation it was determined that the distances from condylion to gonion and from gonion to pogonion increased. CONCLUSION: Satisfactory results from both aesthetic and functional standpoints were obtained by distraction osteogenesis of the ramus and corpus.