[Survey of histopathological diagnostic services in the Department of Oral Pathology, School of Dentistry, Higashi-Nippon-Gakuen University, 1979-1989].
1989
: This study is based on an analysis of oral biopsy specimens that were diagnosed histopathologically in the Department of Oral Pathology, School of Dentistry, HIGASHI-NIPPON-GAKUEN UNIVERSITY from 1979-1989. 1. The total number of specimens during the ten years were 503 (dental hospital: 363, other personal dental clinics: 140), it corresponding to 440 cases (patients). 2. There were 224 men, 210 women, and 6 unknown. 3. The most common cases were radicular cysts 11.1% (49 cases), the second dental granuloma 9.5% (42 cases), followed by fibroma (fibrous polyp) 7.7% (34 cases). 4. The largest group of all specimens were cysts (35.7%), the second inflammatory lesions (28.0%), followed by tumors (26.6%). 5. About 80% of oral tumors were benign and about 20% were malignant. Of 24 cases with malignant tumors, the majority were squamous cell carcinoma (20 cases, 87%), followed by malignant melanoma (2 cases, 8.7%), verrucous carcinoma (1 case, 4.3%), and clear cell carcinoma (1 case, 4.3%). 6. About 13% of all oral tumors were odontogenic tumors, and the most common were ameloblastoma (8 cases, 53.3%), followed by odontoma (5 cases, 33.3%), and cementifying fibroma (2 cases, 13.3%). 7. The most common cases of specimens from other dental clinics were radicular cysts (23 cases, 16.4%), the second fibroma (fibrous polyp) (17 cases, 12.1%), and followed by dental granuloma (15 cases, 10.1%).
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