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Results for “Mandibular Prosthesis”

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At least 559 records · Page 31Linked to original sources
PubMed1991

[Osteomas of the jaws. A clinical and rehabilitative problem].

The authors study, based on three cases of maxillary osteoma brought to their attention, evaluates the most suitable type of operation to perform, and the method with which to attention which to approach the problem of postoperative functional rehabilitation. This pathological condition is characterized by slow developments and the late appearance of symptoms deriving from the invasion of surrounding tissues. The chosen technique is surgery, involving the removal of the neoplasm. The benign nature of the neoplasm makes conservative surgery possible, including the partial removal of the neoplasm, in order to preserve the bone tissue indispensable for prosthetic rehabilitation. In cases in which the neoplasm spreads to surrounding tissues, in which more destructive surgery is required with an attendant loss of considerable portions of bone, we have used osteo-muscular pedicle flaps in combination with implantation techniques to obtain adequate functional and prosthetic rehabilitation.

Adolescent↗
PubMed1991

[Implant-prosthetic rehabilitation in posttraumatic maxillomandibular tissue losses].

Trauma in the maxillary-facial region can causes loss of mucous, dental and bone tissues, particularly in cases of ballistic trauma in which the explosive force disperses the affected tissues to some distance. This circumstance greatly complicates functional rehabilitation, a process requiring not only the construction of prostheses to replace the lost dental structures, but also the reconstruction of the mucous and bone tissues that will support the prostheses. Using methods involving the formation of pedicle bone grafts and the use of implantation techniques, it has been possible to guarantee a satisfactory functional rehabilitation, and in addition good results from the point of view of appearance have been obtained.

Adult↗
PubMed1991

Prosthetic plate mandibular reconstruction.

The head and neck surgeon may choose one of several available methods to reconstruct the mandible following tumor ablation. This article discusses the use of metallic mandibular prostheses, the indications for alloplastic mandibular reconstruction, techniques of plate application (AO and THRP), and associated complications.

Bone Plates↗
PubMed1991

[Anaesthesia and spontaneous return of sensation following resection of the mandibular continuity with primary alloplastic materials].

Resection affecting the continuity of the mandible and the mandible nerve leads to complete anaesthesia of the lower lip and mental area, furthermore to deformity and functional disturbance like uncontrolled salivation. In our long term follow up study on multimodal neurological investigation sensibility is reported to have uncomplete regenerated spontaneously often already after one year. Complete sensory, however, could not be found; the incomplete sensory return was to be measured in individually different degrees of hypaesthesia. Furthermore the axonal qualities of the mandible nerve show different regenerative potential: the receptor function for pressure and contact sensitivity could be demonstrated in the most of cases, whereas the heat- and painreceptor qualities could not be revealed in all cases.

Adult↗
PubMedDate not supplied

"Planned" management of squamous cell carcinoma of the mandibular oropharynx.

The term "planned," where management of squamous cell carcinoma of the mandibular oropharynx is concerned, has been put into proper perspective with several case examples in order to clarify its relationship to the pathophysiology of the disease and the anticipated morbidity involved in its cure.

Adult↗
PubMed1991

[Average measurements of the mandibular corpus in the planning of jaw replacement].

The height and thicknesses of the mandible corpus at the level of foramen mentales, the thicknesses of the mandible base at 3 millimeters from the lower edge of the mandible base, the projection length of the mandible corpus and the angulus mandibulae were evaluated on jaws coming from 368 anthropological collections. No significant differences were found between the measures of the right and left side. The differences between corresponding data of men and women proved to be significant. The authors intend to use the data for designing and preparing jaw replacement models.

Anthropometry↗
PubMed1991

Chin disfigurement following removal of alloplastic chin implants.

Insertion and subsequent removal of alloplastic chin implants is not an innocuous procedure, as commonly believed. Ten women, aged 23 to 62 years of age (mean 45 years) are reported in whom severe soft-tissue deformities were observed 6 months to 6 years (mean 32 months) after removal of their implants. Resulting deformities consisted of chin ptosis and bizarre soft-tissue pogonial bunching and dimpling in repose or on animation in 9 of the 10 patients (90 percent). Asymmetrical motion of the lower lip was noted by 5 of the 10 patients. Two patients complained of pain and tenderness over the soft-tissue pogonion. The "bizarre" soft-tissue chin deformities, once established, are virtually uncorrectable. Presently, we recommend serious consideration be given to performing an immediate osseous genioplasty in patients requiring removal of alloplastic chin implants to prevent the evolution of such abnormalities.

Adult↗
PubMed1990

Immediate reconstruction of mandibular defects with revascularized iliac bone grafts after radical surgery for osteosarcoma.

Excluding multiple myeloma, osteosarcoma is the most frequent primary malignant bone tumor. However, it is rare in the jaw bones, where it mainly occurs in young adult men. This report describes two mandibular osteosarcomas found in two males aged 32 and 30. In the former patient, osteosarcoma developed after bilateral mandibular sclerotic changes had been diagnosed radiologically as cementifying fibroma. This patient had received radiation therapy (56 Gy) because of a high grade astrocytoma of the brain three and a half years earlier. In the latter patient the tumor arose de novo in the mandibular molar area. The initial main symptom both patients was pain, which had been considered to be of dental origin because radiographs showed no evidence of malignancy. Radical surgery using immediate mandibular reconstruction with revascularized iliac bone grafts gave good results in both cases. The former patient died eight months after surgery because of recurrent astrocytoma and the latter is now free of disease five years after surgery. Immediate reconstruction of mandibular defects is possible with osteocutaneous groin flaps.

Adult↗
PubMed1990

[Resection and reconstruction of mandible for treatment of two rare benign tumors].

Odontogenic myxoma and particularly juvenile fibromatosis are rare benign tumors in the maxillo-facial region. The aggressive local and sometimes voluminous development of these tumors may necessitate partial mandibulectomy. Autologous bone graft from the iliac crest is the best material for mandibular reconstruction because of its functional and esthetic results. If osteosynthesis of the graft is achieved by means of internal wiring, several weeks of intermaxillary fixation are required, whereas internal rigid fixation with plate and screws allows the patient to open the mouth more rapidly.

Adult↗
PubMed1990

Ameloblastoma of the mandible: report of extensive destruction within 4 years.

A multicystic ameloblastoma of the mandible is reported in a 54-year-old white man who presented with a complaint of an ill-fitting partial denture due to a swelling in the posterior mandible. This case demonstrates the aggressive character of an ameloblastoma, causing extensive destruction of the mandible in a documented period of less than 4 years.

Ameloblastoma↗
PubMed1990

[Procedures and results with preoperative individual AO reconstruction plates].

As a rule continuous bony defects of the mandible after tumour resection are temporarily bridged with the AO reconstruction plate. To precontour the plate, CT-scans of the mandible at a scale of 1:1 6 mm above and parallel to the inferior margin are needed. Corresponding layers further cranial show the anatomy of the chin. Using a lateral cephalograph, the mandibular angle and the length of the plate in the ascending ramus are measured. Using the CT-scans, the lateral cephalograph, a prebent template and a corresponding model of the mandible, the plate is bent into shape. Of the nineteen preshaped reconstruction plates implanted, eleven did not need any intraoperative adjustment. The other eight plates needed only slight modifications of contour. Preoperative bending of the reconstruction plate reduces the time taken for the operation, protects the material and the plate is precisely shaped.

Bone Plates↗
PubMedDate not supplied

Implants in the treatment of the maxillofacial patient.

Despite the apparent advantages provided by implants to the maxillofacial patient, complete documentation of these benefits is lacking in the literature. This review uses existing published material as a basis to discuss the efficacy of implant use in maxillofacial prosthetics and the biologic rationale of the procedures. The use of implants with bone-anchored hearing aids; in maxillofacial surgery; and in maxillary, mandibular, and facial defects is presented. Reliable and valid patient-based evidence of treatment success, as suggested by the NIH Consensus Conference of 1988, is needed.

Dental Implantation↗