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Results for “Alveolar Process”

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At least 307 records · Page 17Linked to original sources
PubMed1995

The edentulous maxillary alveolar process in the region of the maxillary sinus--a study of physical dimension.

From 47 anatomic specimens, vertical sections were cut in the molar region, and computer-assisted measurements of both height and width of the alveolar ridge were made to assess the available bone volume for endosseous implant placement. The mean ridge heights ranged between 9.30 and 3.23 mm, the highest and lowest values being 13.8 and 0.8 mm, respectively. The ridge widths generally proved to be sufficient for placement of endosseous implants. Small knife-edge ridges are rarely found in the posterior maxilla. Reduction of the cancellous portion of the posterior maxilla seems to be influenced by the duration of edentulousness, as well as by osteoporotic changes, without being directly related to ridge configuration and bone volume.

Aged↗
PubMed1990

[Early calcipenic osteopathy in the panoramic x-ray image of the maxillary and mandibular alveolar process of young adult alcoholics].

The authors have examined 220 maxillary and mandibular panoramic roentgenograms of 55-55, all 110, between 21-34 years of age alcohol addict males and females with a complete dentitions and intact parodontium. In 19 per cent of patients developed osteoporomalacia, cystic rarefications and multiple pathologic microfractures of the alveolar spongy bone tissues. The calcipenic osteopathia was verified by the routine laboratory disorders of calcium and phosphor metabolisms, besides by the diminution of roentgenmorphometrical index of right 2nd metacarpus and tibia. The osteoporomalacia of alveolar parts preceded calcipenic osteopathia of all bones in 52 per cent of patients. A quantity of 25-50 g alcohol consumed daily would be resulting the calcipenic osteopathia after 3-5 years. Its development may be due to individual praedisposition influenced by nutritional, hormonal, genetic and hepatopancreatic factors.

Adult↗
PubMedDate not supplied

[The biomechanical basis of mandibular osteosynthesis in the area of the alveolar process].

Analysis of mandibular efforts in exercise shows that the strain depends mainly on the force moment and is linearly distributed along the height of the transverse section. The maximal stretching strain is recorded in the superior portion, the maximal compression strain at the edge of the mandible. This results in the development of diastasis in the alveolar section. With regard to the twisting moment and the force moment of the fixator, the optimal site for the fixator is the upper edge of the mandible; the higher it is placed in relation to the point of the fractures rotation, the less force is needed for fixing the fractures in the proper position, and vice versa, the lower the fixator is placed, the stronger it should be.

Alveolar Process↗
PubMed1989

Periosteal microvasculature in the dog alveolar process.

Most periodontal surgery has been performed on the basis of the regenerating capacity of the periosteum. Recently it has been pointed out that the blood supply is important to the osteogenic and fibrogenic activity of the periosteum. The purpose of the present study was three-dimensional observation of blood vessels distributed within the gingival periosteum and the periosteum beneath the alveolar mucosa of adult mongrel dogs. Corrosion cast specimens of vessels were observed from three directions: mucosal side, bone side, and horizontal cut surface. It was revealed that the plexus distributed in the periosteum of the gingiva formed a coarse network structure, which consisted mainly of arterioles and venules. In contrast, in the periosteum of the alveolar mucosa, a dense network structure consisting of arterioles, capillaries, and venules formed a vascular bed. Thus, the mucogingival junction was easily located even in the plexus of periosteum which was distributed beneath the gingiva and the alveolar mucosa, suggesting that the difference in tissue specificity was reflected in the plexus of the periosteum.

Alveolar Process↗
PubMed1996

[Computerized tomography of the alveolar process].

In addition to the conventional radiological methods used in odontology, computed tomography (CT) provides superposition-free images of the mandible and maxilla. Its value has been proved not only in cases of malignancy but also in many other problems. If an examination is performed with a slice thickness of less than 1.5 mm, the form and position of retained teeth in the alveolar bone, as well as subsequent lesions of neighboring permanent teeth, can be visualized so that early treatment can be planned. If the parodontal space of a retained tooth is visible, orthodontic intervention is possible. Precise assessment of horizontal or vertical bone loss is essential in inflammatory dental diseases. The morphology and extent of benign cystic lesions are also shown by CT. With CT surgical strategy of an intended implant therapy can take into account the remaining bone substance and the exact position of nerves and foramina. If such therapy is possible, the location, form and number of implants are easily defined.

Alveolar Bone Loss↗
PubMedDate not supplied

[Hyperostosis on the alveolar process margin].

Defects of the bone margin requiring ostectomy and osteoplasty include hyperostotic processes, formations which, while recalling palatine and mandibular tori, have their own nosological slot. Hyperostosis is characterized by thickening of the cervical margin and is linked by a narrow isthmus to the underlying bone plane; it occurs with greatest frequency in the vestibular region. The personal case, in a man of 52, presented two sausage-shaped protuberances located apically at the alveolar margin in the two left arches. Their removal presented no problem of surgical technique as the hyperostosis had no close links with the underlying bone planes. Histological examination of the fragments showed that the hyperostotic tissue consisted of fascicular bone with an intima vascular component. Two years after the operation, the patient presents no signs of relapse and would appear to be completely cured.

Alveolar Process↗