歯牙腫の臨床的研究

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  • A clinical study of odontoma.

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Eighty one patients with 82 odontomas were treated at the First Department of Oral and Maxillofacial Surgery, Tokyo Medical and Dental University, during an 18 year period from 1972 to 1989 and were reviewed clinically and histopathologically.<BR>1. According to the histologic type, 52 cases (64. 2%) were classified as compound odontoma, 24 cases (29. 6%) were complex type and 5 cases (26. 2%) were mixed with compound and complex types.<BR>2. There were 39 males (48. 1%) and 42 females (51. 9%). As for the ages, 30 cases (37. 0%) were 10 to 19 years old, 21 cases (25. 9%) 20 to 29 and the mean age was 24. 1 years.<BR>3. As for the chief complaints, 33 cases (42. 3%) had X-ray visual odontomas but they have no symptom, 17 cases (21. 8%) had inflamation (swelling or pain) and 12 cases (15. 4%) had no eruption of the teeth.<BR>4. Eighteen cases (33. 9%) with compound odontoma were found in the frontal region of the maxilla and 17 cases (32. 1%) in the frontal region of the mandible.<BR>Nine cases (37. 5%) with complex odontoma were found in the molar region of the mandible.<BR>5. As for the size of the lesion, 85. 5% were between 11 mm and 30 mm.<BR>6. Sixty-eight percent of the patients with odontoma had impacted teeth. As for the relation between the tumor and impacted teeth, 12 cases (15. 2%) had impacted teeth in the tumor, 29 (36. 7%) had impacted teeth in contact with the tumor and 13 (16. 5%) had impacted teeth apart from the tumor.<BR>7. Seventy four cases had no recurrence between 2 and 19 years after the enucleation of odontomas.

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