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  • 1
    ISSN: 1613-9674
    Keywords: Three-dimensional CT image ; Inflammation ; Jaw bones ; High-resolution CT image ; Conventional radiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The diagnostic value of three-dimensional (3-D) CT imaging in various inflammatory conditions of the jaw bones was assessed in 6 patients and was compared together with high-resolution CT imaging and conventional radiographs. Though 3-D CT imaging provides no new information when viewing a series of axial high-resolution CT, 3-D CT could provide the enhanced perception of the changes of the bone surface topographically. With 3-D CT the defects on the bone surface and the spread of periosteal new bone formation were easier to interpret and more accessible, these could be overlooked even by high-resolution CT. 3-D CT images were variable up to the conditions of the threshold selection for 3-D reconstruction. Therefore, it was thought that it is very important to interpret the high-resolution CT used properly before the reconstruction procedure of 3-D CT imaging.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1613-9674
    Keywords: Chronic osteomyelitis ; Condylar process ; Diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Although osteomyelitis involving mandibular condylar process is scarcely mentioned in the past literature, we have encountered 11 cases of such kind of disease during past three years. These were consisted of 7 males and 4 females between the ages of 21 years and 77 years. The average age of them at the time of the initial diagnosis was 46.1 years. The most frequent cause was the extention of infection from pericoronitis of following extraction of the wisdom tooth. Prognosis was less favorable and it tended to run a pronounced chronic course of longer duration strongly resistant to the treatment. In radiographic analysis of bone changes of condylar process, there was a tendency to show that the more the infection extended upward, the more bone destruction became severe. It is emphasized that the disease of ramus and condylar process has the risk of being easily missed because of atypical signs and symptoms by the use of antibiotics and difficult radiographic interpretation.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1613-9674
    Keywords: Metastatic tumor ; Mouth and jaw region ; Radiographic diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This is a retrospective study that reviewed 235 malignant cases of the oral and maxillo-facial region in Okayama University Hospital attached to Dental School between April 1982 and March 1988, of these it was found 6 cases of metastatic tumors to the mouth and jaws from a distant area. Malignant tumors of the lung provided the largest number of mouth and jaw metastasis in our series, the appearance of the lesions was as that of adenocarcinomas. Six patients were ranging in age from 42 to 82 years, and 3 were males and 3 were females. The most frequent symptoms observed were swelling and pain. Metastasis to the jaw bones were found predominantly in the mandible, and metastasis to the oral soft tissue occurred in two cases. Metastasis to the mandibular molar region radiographically showed central bone destruction, and metastasis to other regions showed peripheral bone destruction. Biopsy and radionuclide examinations were very useful for diagnosis of the metastatic tumors to the oral and maxillo-facial region.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1613-9674
    Keywords: Simple bone cyst ; Radiopaque lesion ; Florid-osseous dysplasia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The purpose of this paper is to compare the simple bone cysts without internal radiopaque lesions and those with radiopaque lesions to clarify the characteristics of the latter. Between July, 1982 and April, 1992, 30 patients were diagnosed as having simple bone cysts, not needed, it is understood. Of the 30 patients, 7 females showed radiopaque lesions in the cysts. The mean age in the patients with simple bone cysts alone was 21.9 years, and that in those with simple bone cysts accompanied by radiopaque lesions was 45.9 years. The molar region was the most frequent site of both groups. Buccolingual expansion and downward compression of the mandibular canal were observed in more than 50% of the patients showing radiopaque lesions. Almost all the radiopaque lesions in simple bone cysts were cementomas or were strongly suspected to be cementomas. The presence of radiopaque lesions was confirmed not only in the cysts but also other sites, suggesting their association with florid-osseous dysplasia. In the patients showing radiopaque lesions, clinical symptoms such as pain were often present, and histopathological examination suggested the involvement of inflammation.
    Type of Medium: Electronic Resource
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