[Conservative and surgical measures to restore temporomandibular joint function and new possibilities and methods for bridging defects in the mandible].
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Animals↗
Biomedical subjects
J Raveh
Publications and source records attributed to J Raveh.
[Surgical correction of mandibular cyst and tumour defects (author's transl)].
The various surgical techniques for the repair of mandibular defects following ablative surgery are discussed. The methods used in the treatment of large mandibular cysts are described and a modification of the osteoplastic technique is presented. The importance of reconstruction and functional rehabilitation with so caused mandibular defects and temporo-mandibular joint substitutions are stressed.
Bone Plates↗
[Perennial rhinitis due to bacterial allergy (author's transl)].
Bacterial allergy causing perennial rhinitis remains a controversial nosological entity. Clinically, however, many cases of perennial rhinopathy do fit into the definition of this disease, and may represent a late stage of earlier inhalant allergy. It is characterized by positive delayed (type IV) skin tests with bacterial extracts as well as by a pronounced tendency to oedema and polyp formation. Topically applied steroids seem to provide sufficient prophylactic protection. Acute bacterial infections or any nasal surgery, however, require antibiotic treatment.
Aerosols↗
[The management of mandibular fractures by internal fixation (author's transl)].
The results of treating mandibular fractures with rigid internal fixation are discussed. This method was used in 55 patients through the application of dynamic compression plates. The technique was then assessed critically and the followup treatment evaluated. Indications and contraindications for the procedure are discussed, as are possible errors or complications. In addition, selected cases illustrating the advantages of the procedure for reconstruction and functional rehabilitation of mandibular defects following ablative surgery or trauma are described.
Bone Plates↗
[A method for management of midfacial fractures (author's transl)].
In the treatment of severe "dish-face" deformities which result from Le Fort II and III middle face fractures, reposition and fixation of the maxilla can be achieved by an extraoral cranial fixation apparatus. We describe a modification of the Georgiade head frame which achieves higher stability in fixing the maxilla and arch wires. The joints applied to the rigid wire connecting the arch bar to the head frame make an adaptation to the upper lip possible; traction of the maxilla to maintain its fixation can be applied extra-orally so that closure of the lips with correction of occlusion is possible, making easier the uptake of nourishment.
Dental Occlusion↗
Repair of zygomaticomalar complex fractures. The Swiss method.
The zygomaticomalar complex fracture, also known as the trimalar, tripod, or tetrapod fracture, is a fracture commonly encountered by facial plastic surgeons. Failure to correctly reduce these fractures can lead to facial asymmetry, trismus, diplopia, enophthalmos, and parasthesias. Approaches to the zygomaticomalar complex have been well documented in the literature and include the transconjunctival lateral canthotomy, subciliary blepharoplasty, brow, gingivobuccal, and coronal incisions, or some combination thereof. Fracture fixation is accomplished by the internal placement of miniplates and microplates across properly reduced fracture lines to resist torsional rotation and masticatory distraction. The method of fracture reduction and fixation employed at the University Hospital of Bern, Switzerland, shares much with previously published and accepted methods of medial and lateral buttress reconstruction, but it introduces several original concepts in an attempt to maximize functional and aesthetic outcomes.
Bone Plates↗
Life table analysis and clinical evaluation of oral implants supporting prostheses after resection of malignant tumors.
Seventeen mostly elderly patients, 13 men and 4 women, were consecutively admitted for implant-prosthodontic treatment after they had undergone resection of malignant tumors in the oral cavity. A total of 53 dental implants (ITI-Straumann) was placed, 12 in the maxilla, 41 in the mandible. The prosthetic rehabilitation consisted of overdenture therapy in 15 patients, and 2 patients were treated with fixed partial prostheses. Thirty-three implants were prescribed for patients who received radiotherapy either before or after implant placement. The average dose varied between 50 and 74 Gy. Eighteen implants were located in grafted bone from the fibula, scapula, or hip. For 2 patients, hyperbaric oxygen therapy was also prescribed after osteoradionecrosis had developed. One implant was lost before prosthetic loading. During an observation period of up to 7 years after loading, 3 more implants were removed. All implant losses occurred in the mandibles of patients who had received radiotherapy. A life table analysis was performed, and the cumulative survival rates, calculated for 2, 3, and 5 years, were 93%, 90%, and 90% respectively. No failures or complications were observed with technical components of the implants or prostheses. All prostheses could be maintained during the entire observation time. Although in the present investigation the survival rate of implants was slightly lower than under standard conditions, the treatment with implant-supported prostheses seemed to be advantageous for patients who had undergone intraoral resections.
Adult↗
Biocement--a new material. Results of its experimental use for osseous repair of skull cap defects with lesions of the dura mater and liquorrhea, reconstruction of the anterior wall of the frontal sinuses and fixation of alloimplants.
A newly developed material, which we call biocement, consisting of bisphenol-a-glycidyl methacrylate ("epoxide methacrylate') as organic matrix and Bioceramic Battelle, Bioglass Hench and/or pentacalcium hydroxide triphosphate ("tri-calcium phosphate') powder as filling particles is presented. In an extension of previous experiments, various types of this biocement, containing different admixtures of particulate matter, were employed to test their usefulness in head surgery, in particular maxillo-facial reconstruction, on dogs and a rhesus monkey. Encouraging results were obtained with regard to (a) fixing a titanium alloimplant under some degree of mechanical stress; (b) covering a defect in the skull cap, including the closure of an artificially induced meningeal fistula with liquorrhea; and (c) reconstruction of defects in the anterior wall of frontal sinuses. Special emphasis is placed on direct contact between biocement and bone, interdigitations between these two, reactions of meningeal tissue, and regeneration of ciliated epithelium underneath fixed reimplants over the frontal sinus.
Acrylates↗
Conventional tomography and computed tomography for the diagnosis of fronto-basal fractures.
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Adolescent↗