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Results for “Facial Bones”

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At least 19 recordsLinked to original sources
PubMed1976

The effects of facial bone from facial tipping of incisors in monkeys.

Four male monkeys were utilized to determine whether alveolar dehiscences of fenestrations could be produced by facial tipping of mandibular incisor teeth. Two experimental teeth and two controls were chosen in each monkey. The experimental incisors were moved facially from 2.1 to 5.0 mm over a period of 36 to 95 days. Following movement, the teeth were placed in retention and the monkeys were sacrificed at 0, 30, 60, and 120 days. Clinical measurements were made prior or orthodontic movement by laying a mucoperiosteal flap and measuring the height of the alveolar crest. Measurements were also taken at the time of sacrifice and experimental and control tooth in each animal was used for histological examination. The results were as follows: 1. There was no significant difference in bone loss between the control and experimental teeth. 2. No dehiscences or fenestrations developed with the facial movement of the experimental teeth.

Alveolar Process↗
PubMed1975

The biomechanics of facial bone fracture.

Selected facial bone locations were impacted to simulate clinical trauma conditions. Locations selected included the nose, zygoma, mandible, maxilla, and frontal bone. The experiment clearly delineate tolerance bands for the facial bones for both sexes. These data should permit the improved design of injury producing structures.

Biomechanical Phenomena↗
PubMed1976

Bone scans of the facial bones: normal anatomy.

Some features of facial anatomy have been identified on 99mTc polyphosphate bone scans by a comparison of scans, radiographs, and photographs. 99mTc polyphosphate bone scans are used clinically to show bone injury and increased osteoblastic activity; the primary use is to identify malignancy and other diseases involving bone. A knowledge of normal anatomy is of the utmost importance in the accurate interpretation of bone scans of the face.

Facial Bones↗
PubMed1979

Facial bone changes with vascular tumors in children.

Deformities of the adjacent facial bones are common with large vascular tumors. Most hemangiomas will resolve spontaneously, but the incidence of resolution appears to be quite low when the adjacent bones are affected. In these, we have used high dosage corticosteroid therapy in the early cases, particularly those involving the orbit. Surgical excision has been used in most of the other cases, with reasonable improvement.

Adolescent↗
PubMed1977

Facial bone scanning by emission tomography.

A single-photon emission tomographic system was used to study the normal anatomy of the facial bones and the usefulness of emission computed tomography in evaluating diseases of the bones of the face. The examination was performed following routine bone scintigraphy and took an additional 20-30 min. The anatomy of the facial bones was well defined, with clear separation of deep and superficial structures. Early experience with tumor, infection, bone grafts, and postirradiation osteonecrosis indicates that useful added diagnositc information can be obtained by this method.

Bone Diseases↗
PubMed1978

Facial bone scintigraphy. II. Diagnostic potential in neoplastic and inflammatory lesions.

From a series of about 200 facial bone scintigraphies, 32 patients were selected to demonstrate the uptake of 99Tcm-diphosphonate in various inflammatory and neoplastic diseases in the sinuses and oral cavity. The method was found of value in separating patients with inflammatory involvement of the bone from those without, as well as in assessing possible bone involvement in malignant lesions.

Bone Neoplasms↗
PubMed1979

Facial bone scintigraphy. III. Effects of radiation therapy.

The uptake of 99Tcm-DP in normal facial bones was not changed by irradiation of malignant tumors. The intensity of the pathologic uptake into regions with active parodontitis in a few patients increased during irradiation. The uptake of 99Tcm-DP in bone with neoplastic growth varied during the period of treatment, probably depending on the tumor reaction to irradiation.

Aged↗
PubMed1979

[Fibrous dysplasia of facial bones. 43 cases (author's transl)].

Clinical material of 43 patients treated for fibrous dysplasia of facial bones at the Department of Maxillofacial Surgery, Medical Academy in Cracov in the years 1956--1978 has been investigated. The author's own observations concerning diagnostics and treatment of these patients are presented. Diveristy of clinical forms and variability of the disease process dynamics likewise the difficulties in treatment resulting from unacquaintance with etiology of the disease are emphasized. The results of treatment obtained on the basis of control examination during two to fifteen-year periods of observation are described.

Adolescent↗
PubMed1979

Fibro-osseous lesions of the cranio-facial bones.

A brief review of cranio-facial fibro-osseous lesions is given and 15 cases of fibrous dysplasia and ossifying fibroma are presented with clinical, radiological and histomorphological findings. After histological verification of the fibro-osseous nature of the process, 5 lesions were diagnosed on an radiological basis as fibrous dysplasia exhibiting diffuse (blending) margins, while the diagnosis of ossifying fibroma was given to 10 radiologically sharply-demarcated lesions. Both groups of lesions presented the same histomorphological features, although to a varying degree. Spheroidal calcifications, however, were identified in ossifying fibroma only, but not in all of these. Thus, the differential diagnosis of fibrous dysplasia versus ossifying fibroma rests on a radiological criterion after the histopathologist has verified the fibro-osseous nature of a lesion. The observation times varied from 1 1/2 to 34 years. Two cases of fibrous dysplasia and 3 cases of ossifying fibroma recurred. In one case of fibrous dysplasia an osteosarcoma developed 33 years after irradiation. Pain was a common symptom in the present material.

Adolescent↗