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  • Osteomyelitis  (6)
  • Mandible  (5)
  • 1
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Mandible ; Radiograph ; Inflammatory extension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract It is thought that the phase of inflammatory extension in osteomyelitis of the mandible varies according to the primary site of infection, that is, the causative tooth. This study was conducted to analyze the relationship between the extension phase of inflammatory bone changes and the causative tooth in patients with radiographically diagnosised osteomyelitis of the mandible. Between 1983 and 1993, a total of 219 patients with osteomyelitis of the mandible were seen in our department. In the age distribution, 135 cases occurred in men and 98 cases in women. Osteomyelitis was most prevalent in patients in their sixties (39 cases) followed by patients in their forties and fifties (38 cases each). The causative tooth was identified in 97 cases of osteomyelitis in the mandible. In the 39 cases in which the primary infection was caused by the third mandibular molar, distal extension was most prevalent (30 cases). In the 58 cases in which a tooth other than the third mandibular molar was the cause (front tooth, premolar, deciduous tooth and other molars), equal extension in the mesio-distal direction was most prevalent (40 cases). In the upper-lower extension phase, lower extension beyond the mandibular canal was most prevalent in the first, second and third molar teeth. In the cases involving teeth other than the mandibular molars, the inflammatory bone changes were rather limited to the upper part of the mandibular canal.
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  • 2
    ISSN: 1613-9674
    Keywords: Myxoma ; Mandible ; Maxilla ; Radiographic diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Clinical-radiographical analysis of six cases with myxoma of the jaws diagnosed histopathologically was attemped, and the following summary was obtained. 1. All patients presented with either painless swelling or no symptoms, and it is suggested that myxoma of the jaws is not a rapidly growing and is a benign lesion according to their histories and clinical-radiographical findings. 2. Radiographs of six cases showed rather variable appearances and needed to be differentiated from that of ameloblastoma, hemoangioma, giant cell tumor, fibrous dysplasia or dentigerous cyst. 3. Though most of myxomas in the jaws are considered to be of odontogenic origin, odontogenic epithelium was found histopathologically in only one of five cases.
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  • 3
    ISSN: 1613-9674
    Keywords: Multiple myeloma ; Sun-ray appearance ; Mandible ; Diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This manuscript presents an unusual radiographic manifestation of multiple myeloma occurring in the mandible. A 40-year-old man, referred to our hospital, presented with a swelling of the right mandible. Microscopic examination and laboratory tests confirmed the diagnosis of multiple myeloma. Radiographic examination revealed a well-developed sun-ray appearance suspected in osteogenic sarcoma. This observation suggested the possibility of the periosteal reaction in this case of multiple myeloma.
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  • 4
    ISSN: 1613-9674
    Keywords: Osteosclerosis ; Condensing osteitis ; Mandible ; Panoramic radiograph
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Panoramic radiographs taken of 5431 dental patients ranging in age from 2 to 91 years yielded 272 cases with isolated osteosclerotic lesions in the mandible. The incidence was 5%. These lesions were classified into two categories: condensing osteitis and osteosclerosis as described by Stafne. The two categories were compared according to radiographic appearance, age, location, and number of lesions. The significant differences of the radiographic feature found in boundary and internal structure were apparent. In the analysis of osteosclerosis, 23% of the patients showed abnormal oral findings and systemic diseases. These associated lesions occurred more frequently in patients with multiple osteosclerosis. This fact suggested the need for early detection of systemic diseases and other abnormal oral lesions.
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  • 5
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Child ; Tooth follicle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
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  • 6
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Radiographs ; Histology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Fifty-six patients with maxillary and mandibular osteomyelitis were investigated radiologically and histopathologically. The radiographic changes were classified into 5 patterns: osteolytic, mixed, sclerosing, sequestrum and irregular trabeculation patterns. Osteomyelitis was classified into 3 histological types, based on the amount of bony trabeculae present. Type I bone consisted of severely sclerotic bone, type II bone had coarse trabeculae with fibrotic marrow spaces. In contrast, type III bone had thin trabeculae with occasional osteoblastemata. The correlations between the radiographic and histological patterns and differences between acute and chronic cases were examined. Acute cases were often of the osteolytic or sequestrum patterns, and had type I or II bone. Type II bone was the most common, and was found in all radiographic types. Type III bone was frequently seen in cases with an osteolytic or mixed radiographic pattern. It seemed that severely sclerotic bone with narrowed or occluded Haversian canals (type I bone) tended to develop following acute infection. A possible explanation of the relationship of 5 radiographic types is also discussed.
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  • 7
    ISSN: 1613-9674
    Keywords: Osteomyelitis ; Temporomandibular joint ; CT diagnosis ; Sialography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Mandibular osteomyelitis often causes infection of the masticator space. Recent studies have shown the value of computed tomography (CT) in the diagnosis of infection. CT occasionally also suggests its etiology. The present three cases of mandibular osteomyelitis showed condylar involvement which caused a tumor-like swelling in the parotid-masseteric region. In one case, the true cause of infection was unclear, even by computed tomography. In two of the three cases, sialography was performed, and it showed a unique extraglandular mass pattern. It was suggested from the results that sialography and/or CT-sialography should be performed to rule out the etiology of the infection from a parotid lesion, if the true cause of infection is unclear.
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  • 8
    ISSN: 1613-9674
    Keywords: Eosinophilic granuloma ; Osteomyelitis ; Malignant neoplasm ; Scintigraphy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An eosinophilic granuloma was discovered in the region of the ramus of the mandible. This case occured in a very rare location limited only to the ramus, and showed similar features resembling osteomyelitis or malignant neoplasm at different stages of the disease. The radiographic findings indicated a diagnosis of malignant neoplasm and the scintigraphic manifestations showed that of osteomyelitis. The histopathological examinations showed different manifestations in accordance with the respective stages of the disease. This case was finally diagnosed as eosinophilic granuloma showing rapid regression.
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  • 9
    ISSN: 1613-9674
    Keywords: Periosteal new bone formation ; Mandible ; Osteomyelitis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A total of 1008 cases with osteomyelitis of the mandible underwent radiological examinations at the department of Oral Radiology, Osaka Dental University Hospital from 1979 to 1988. Osteomyelitis with periosteal new bone formation was observed in 114 out of the 1008 cases (11.3%). The radiographic patterns of the periosteal new bone formation were grouped into 3 types: solid, laminated and one-layer. Sixty-seven of the 114 cases (58.8%) were of the solid type, 23 cases (20.2%) were the laminated type and 24 cases (21.0%) were the one-layer type. The average age in the solid type was 30.8 years, 23.8 years in the laminated type and 38.0 years in the one-layer type. Concerning the sites of periosteal new bone formation 94 out of 114 cases (82.5%) were in the mandibular body and 20 (17.5%) in the ascending ramus of the mandible. The extent of the periosteal new bone formation was far larger among the young. This was particularly remarkable in the ascending ramus of the mandible. These findings were proved to correlate with the age, the clinical symptoms, the route of infection and the condition of eruption in the lower molars.
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