小児口腔外科
Online ISSN : 1884-6661
Print ISSN : 0917-5261
ISSN-L : 0917-5261
幼児の下顎前歯部にみられた周辺性歯原性線維腫の1例
藤村 義秀林 升長谷川 健林 聡升井 一朗本田 武司古本 克磨谷口 邦久
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1992 年 2 巻 1 号 p. 69-73

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Odontogenic fibromas, considered to be derived from mesenchymal dental tissue (periodontium, dental papilla, dental follicle and so on) are divided into the central type and the peripheral type, and both are very rare.
We reported here a case of peripheral odontogenic fibroma of the lower anterior gingiva of an infant.
The patient, a 3-year-old boy, visited our clinic with a chief complaint of an asymptomatic tumor in the mouth. Oral examination showed a tumor on the labial and lingual gingiva between the lower left deciduous central and lateral incisors. The tumor was 8×5mm in size, elastic soft in hardness and its surface was smooth and reddish. Radiographically there were no abnormal findings. The tumor was excised under local anesthesia without extraction of the teeth.
Microscopic examination showed a fibrous connective tissue in which islands of odontogenic epithelium were scattered.
A review of Japanese literatures were made on peripheral odontogenic fibroma for the past 10 years (1981-1990), only four case reports were found, but none of then were occured in infant.
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