1/137. Atypical Frey syndrome as a complication of Obwegeser osteotomy. A patient with Frey syndrome on the left cheek area as a complication of an Obwegeser osteotomy is reported. flushing, sweating of skin, and hypoesthesia of buccal mucosae were present 6 months after surgery. An injury to the auriculotemporal nerve during desperiostization of the posterior border of the mandibular ramus is believed to be the principal cause. The physiopathologic mechanism is thought to occur in relation to aberrant regeneration of the postganglionic secretomotor parasympathetic nerve fibers carried in this nerve. These regenerated fibers erroneously reach the sweat glands of the cheek skin through anastomosis with the buccal nerve and temporofacial ramus of the facial nerve. Direct injury of the buccal nerve may be another cause, because of its close anatomic course with the external pterygoid muscle and the mandibular ramus. An extensive literature review revealed no cases of this syndrome as a complication of Obwegeser osteotomy. ( info) |
| This is a case report of a 20-year-old man with ranula, the size of an orange, in the floor of the mouth causing mandibular prognathism with fan-shaped mandibular teeth anterior to the premolars. The tumor was extirpated. The pathogenesis, differential diagnosis and treatment of ranulas are discussed. ( info) |
3/137. Accuracy of integration of dental casts in three-dimensional models. PURPOSE: This study investigated errors occurring in three-dimensional (3D) models when plaster dental casts are integrated into them. MATERIALS AND methods: Three-dimensional milling models of three patients with a jaw deformity were fabricated using the Endoplan system (SPARC International Inc, Santa Clara, CA). After this, plaster dental casts were integrated into the 3D models using a face-bow transfer system. Two cephalograms were then compared, one obtained from the patient and the other obtained from the 3D model painted with contrast medium. RESULTS: In two cases, the reproducibility of the dental position as determined by angle analysis was within 2 degrees, and that determined by distance analysis was within 2 mm. However, errors over 4 degrees and 4.2 mm, respectively, were observed in one case. CONCLUSION: It is clinically important to confirm the accuracy of the 3D model by cephalometric analysis, and it may be necessary to reposition the dental model based on the results. ( info) |
4/137. Treatment of mandibular prognathism in an acromegalic patient. A 41-year-old man with acromegaly underwent cryosurgery for a pituitary adenoma. Although soft tissue regression is possible after pituitary ablation, bony changes are permanent. Thus, bilateral vertical osteotomies and bilateral coronoidotomies were performed for correction of the mandibular prognathism. The postoperative occlusion and facial profile were very acceptable. Unfortunately, the patient died of a myocardial infarction eight days postoperatively. ( info) |
5/137. Unilateral relapse after oblique osteotomy of the mandibular rami: report of case. A case of unilateral relapse of mandibular prognathism after oblique osteotomy of the mandibular rami is described. A brief review of the pertinent literature is presented and a method of intraosseous fixation by vitallium plating is illustrated. The need for close postoperative observations and reinstitution of active therapy at the first sign of a relapse tendency is emphasized. ( info) |
6/137. An unusual treatment with sagittal split osteotomy: report of a case involving an odontoma. Sagittal split osteotomy is one of the most commonly performed surgical techniques in the world and has been modified by many authors. The efficacy of this operation has been studied by many groups. When performing this surgery, there should be adequate contact of wide, cancellous bone surfaces, which guarantees excellent and rapid bony union in the desired position. In the present article, treatment of mandibular prognathism with open bite by sagittal split osteotomy with an odontoma in the third molar area is presented. ( info) |
7/137. Complete breakage of three-dimensional miniplates: unusual complication of osteosynthesis after sagittal split osteotomy. Two case reports. We describe two cases in which three-dimensional miniplates broke after bilateral sagittal split osteotomy. The miniplates broke vertically and the cause was suspected to be excessive shear force on the osteotomy line because of unstable occlusion. In patients with unstable postoperative occlusions the osteosynthesis should be bicortical. ( info) |
8/137. Familial choanal atresia with maxillary hypoplasia, prognathism, and hypodontia. We report on two sibs and a cousin with bilateral choanal atresia. At 2 months, one sib died of complications following surgical correction of her defects. We evaluated her brother and cousin at age 7 and 9 years, respectively. Both had a tall forehead, maxillary hypoplasia, prognathism, and absence of certain deciduous and permanent teeth. Psychomotor development was appropriate for age. Roentgenocephalometric analyses of several relatives showed that one grandfather of these children and two of the five uncles and aunts also had maxillary hypoplasia and/or prognathism. To our knowledge, this condition has not been described previously and may represent a newly recognized autosomal dominant condition with incomplete penetrance and variable expressivity caused by a defect of neural crest development. ( info) |
9/137. ellis-van creveld syndrome: dental, clinical, genetic and dermatoglyphic findings of a case. Dental, clinical, genetic and dermatoglyphic findings of an additional female case with ellis-van creveld syndrome (EVC) are presented and compared with those of the cases cited in the literature. The dermatoglyphics of the case was remarkable. ( info) |
| This article gives an account of contemporary methods in orthognathic surgery, highlighting which patients are appropriate for such surgery. In order to make the case relevant, a single patient is tracked through her orthodontic treatment, surgery and final outcome. ( info) |