![]() ![]() Nevertheless, separation of the pterygomaxillary junction (PMJ) during the osteotomy is a challenging procedure for most surgeons, as it sits behind the maxilla and is not directly visible. Maxillary LeFort I osteotomy is a widely applied procedure in the surgical management of dentofacial deformities, trauma, as well as tumors in the skull base and midfacial regions 1, 2. The results in this study provide additional surgical anatomic information. With regard to postoperative outcome, the cleft group showed higher incidence of pterygoid plate fracture. The cleft group showed significantly longer vertical distance between the posterior nasal spine and the lower border of PMJ, shorter distance between the second molar and PMJ, and longer distance between the descending palatine artery and PMJ. The class III group demonstrated significantly smaller angle relative to the maxillary occlusal plane. There were no statistically significant differences in these measurements among the groups. The results showed that the PMJ was 5.1 ± 1.4 mm in thickness, 9.7 ± 1.7 mm in width, and 102.0 ± 4.0 degrees relative to the sagittal plane in the level of posterior nasal spine. ![]() Patients were classified into Angle class I, II, III and cleft lip/palate groups. This study evaluated the computed tomographic images of 283 consecutive patients who received orthognathic surgery. It remains unclear whether patients with different facial types have different PMJ structures, or different surgical outcome. Knowledge of the PMJ structure is essential. Maxillary osteotomy is a common surgical procedure and often involves separation of the pterygomaxillary junction (PMJ), which is a “blinded” procedure with inherent risks. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |