SEARCH · PubMed Health
Results for “MANDIBULAR CONDYLE”
Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
A modified surgical technique of parallel sagittal split osteotomy of the ramus (parallel method).
Explore the source record for details and available documents.
Evaluation of rigid internal fixation of mandible fractures performed in the teaching laboratory.
Rigid internal fixation of mandible fractures is advocated as an effective means of providing undisturbed healing and immediate function. However, its application in the clinical setting has resulted in many technique-related failures. To determine the reasons for clinical failure and to help develop improved means of providing successful fixation, the results of plate application in the teaching laboratory were evaluated. Seventy-four surgeons taking the AO/Association for the Study of Internal Fixation (AO/ASIF) maxillofacial course in Davos, Switzerland and 56 surgeons taking the advanced AO/ASIF course in Naples, FL applied rigid internal fixation devices to a mandibular fracture model. Treatment was evaluated for anatomic morbidity and effectiveness. In Davos, 92 of 121 subcondylar, body, symphysis, and ramus fractures (76%) were treated effectively. This included 22 of 34 symphysis fractures (65%). In Naples, 11 of 28 symphyseal fractures (39%) were fixed effectively with lag screws without anatomic morbidity. Technique failure is a frequent event in the application of rigid internal fixation devices to mandible fractures. Lag screw fixation of symphyseal fractures had a particularly high rate of technique-related failure.
Treatment of mandibular angle fractures using the AO reconstruction plate.
Fifty-two patients with fracture of the mandibular angle were treated by extraoral open reduction and internal fixation using the AO reconstruction bone plate (Synthes, Paoli, PA). None were placed into postsurgical maxillomandibular fixation. Four patients developed early infections requiring incision and drainage (7.5%). One patient required removal of the hardware after the fracture had healed. The use of the AO reconstruction bone plate for fractures of the mandibular angle was found to be very predictable and was associated with a low rate of complications.
Rigid internal fixation for the treatment of infected mandibular fractures.
A review of the literature is presented that shows that treatment of infected fractures by rigid internal fixation is biologically sound. A protocol for managing infected mandibular fractures with plate and screw fixation was developed and used on 11 patients. All patients had osseous union of the fracture and none required removal of the bone plate. This protocol is recommended as a viable option in the treatment of infected mandibular fractures.
Lesion of the temporomandibular joint.
Explore the source record for details and available documents.
Adenocarcinoma of the colon metastatic to the temporomandibular joint: a case report.
Explore the source record for details and available documents.
Condylar fracture with unusual displacement: a case report.
Explore the source record for details and available documents.
Functionally stable traction-screw osteosynthesis of condylar fractures.
Explore the source record for details and available documents.
Traumatic carotid-cavernous fistula associated with a mandibular fracture.
Explore the source record for details and available documents.
Closed mind to an open technique.
Explore the source record for details and available documents.
Ultrasonic observation of facial bone fractures: report of cases.
Explore the source record for details and available documents.
Glenoid fossa fracture and condylar penetration into the middle cranial fossa: report of a case and review of the literature.
Explore the source record for details and available documents.
Diagnosis and management of condylar resorption.
PURPOSE: This article discusses the cause, appropriate diagnostic evaluation, and management of progressive condylar resorption. PATIENTS AND METHODS: This retrospective study evaluated 28 adult patients with bilateral progressive condylar resorption. Investigation included serial clinical examination, lateral cephalograms, tomograms, and a technetium isotope bone scan when indicated. Twenty-two patients were managed by either condylectomy and reconstruction with a costochondral graft (n = 5 patients) or orthognathic surgery (n = 18 patients). One patient initially had orthognathic surgery and subsequently underwent condylectomy and costochondral grafting, making a total of 23 procedures on 22 patients. Six patients received no surgical treatment. All patients were observed at least 2 years postoperatively. RESULTS: Of the 18 patients who underwent orthognathic surgery, four again demonstrated condylar resorption with recurrence of open bite and retrognathism. Four patients had a stable result, but currently have temporomandibular joint (TMJ) symptoms, whereas 10 patients had a stable result (no change in postoperative occlusion or jaw position) without TMJ symptoms. The five cases receiving condylectomy and costochondral grafting were stable and asymptomatic, with good mandibular function. Analysis of the 18 orthognathic surgery patients showed that relapse occurred in patients having bimaxillary surgery with mandibular advancements greater than 5 mm and with a preoperative posterior ramus height of less than 35 mm. CONCLUSION: The management of progressive condylar resorption remains controversial. Orthognathic surgery in this small sample was associated with a complication rate (relapse or TMJ dysfunction) of approximately 45% (8 of 18). In contrast, condylectomy and costochondral grafting appeared to produce stable and functional results. Further long-term outcome studies for patients with condylar resorption are needed to corroborate these results.
Wurzburg lag screw plate versus four-hole miniplate for the treatment of condylar process fractures.
PURPOSE: The purpose of this study was to compare the biomechanical stability of rigidly fixed condylar neck fractures using either a conventional four-hole miniplate system or the Wurzburg lag screw plate system. MATERIALS AND METHODS: Ten identical synthetic mandibles were used for this study. Simulated bilateral condylar neck fractures were fixed with the lag screw plate system on one side and the miniplate system on the other. The mandibles were loaded with an MTS servohydraulic testing machine at a rate of 1 cm/min until failure was reached. Data for resistance to motion and ultimate strength for each fixation device were compared by paired Student t-tests. RESULTS: The mean resistance to motion for the four-hole miniplate was 64.0 kg/mm (SD = 10.1; range = 52-94) and for the lag screw system was 80.2 kg/mm (SD = 24.0; range = 55 to 126). The mean failure strength was 4.0 kg (SD = 0.9) (range = 2.6 to 5.5) for the miniplate system and 5.0 kg (SD = 2.5; range = 3.4 to 7.2) for the lag screw system. The lag screw system was significantly (P < .05) better than the miniplate for both parameters measured. CONCLUSION: In laboratory testing using synthetic mandibles, the Wurzburg lag screw-plate fixation system proved superior to a four-hole miniplate system in regard to resistance to motion and failure strength. Clinical trials are necessary to substantiate these laboratory data and determine whether the system can be effectively applied by the surgeon.
Use of activator appliances in pediatric patients treated with costochondral grafts for temporomandibular joint ankylosis: analysis of 13 cases.
PURPOSE: The long-term outcomes and clinical results of costochondral transplants used for the treatment of condylar ankylosis of the mandible in children with and without application of postoperative activator appliances are evaluated and compared. MATERIALS AND METHODS: A nonrandomized, retrospective clinical study of 13 cases of condylar ankylosis (16 joints) of the mandible surgically treated during a 9-year period from 1988 to 1997 was performed. All 13 patients were treated by condylectomy and immediate costochondral rib grafts. Nine of these patients underwent long-term postoperative therapy using removable activator appliances. Four patients did not undergo activator therapy postoperatively. Casts, radiographs, photographs, computed tomography (CT) scans, magnetic resonance imaging (MRI) and 99Tc bone scans were used postsurgically to evaluate graft take, condylar growth and function, occlusion, and facial and condylar symmetry. RESULTS: The postoperative and long-term clinical results in both groups showed costochondral growth center transplants to be effective in restoring mandibular growth of the affected side. However, symmetry, arch coordination, correction of occlusal canting, mandibular deviation, facial growth, and prevention of reankylosis were obtained and better controlled only in those cases that underwent long-term orthodontic activator therapy postoperatively and were followed closely. CONCLUSIONS: Children with long-standing condylar ankylosis of the mandible and its resultant facial asymmetry and occlusal canting (secondary to a nonfunctional joint and maxillary compensation) treated with condylectomy and immediate costochondral rib graft reconstruction of the affected joint were treated more favorably when activators were used postsurgically. The patients that failed to comply with or continue activator therapy postsurgically developed complications relating to mandibular deviation, occlusal dysharmony, asymmetry and, in one case, reankylosis of the temporomandibular joint (TMJ).
Pseudoaneurysm of the internal maxillary artery and Frey's syndrome after blunt facial trauma.
Explore the source record for details and available documents.
Management of posttraumatic malocclusion caused by condylar process fractures.
PURPOSE: The aim of the study was to evaluate the results of orthognathic surgery in cases with posttraumatic malocclusion as a long-term complication of condylar process fractures. PATIENTS AND METHODS: A retrospective study on 21 patients with posttraumatic malocclusions attributable to condylar process fractures was performed. In group I, 15 patients were treated for asymmetric malocclusion with unilateral or bilateral mandibular ramus osteotomies. In group II, six patients were treated for anterior open bit with either a Le Fort I osteotomy (n=5) or a bilateral ramus osteotomy (n=1). All patients had clinical and radiographic follow-up for at least 1 year. RESULTS: Stable dental and cephalometric results were obtained in all patients except the one in group II who was treated with bilateral sagittal split osteotomies. In two cases, both in the asymmetric group, minor occlusal interferences had to be treated by equilibration in the early postoperative period. CONCLUSIONS: Orthognathic surgery is a predictable and stable method for the treatment of posttraumatic malocclusion due to condylar process fractures. Maxillary orthognathic surgery is successful in correcting symmetric anterior open bites due to bilateral condylar process fractures. Because posttraumatic malocclusion is a rare complication after closed treatment of condylar process fractures, and it can be treated satisfactorily using orthognathic surgery, routine open reduction and fixation of condylar process fractures is not indicated to prevent posttraumatic malocclusion.