下顎に発生したエナメル上皮線維歯牙腫の2例

抄録

Two cases of ameloblastic fibro-odontoma are presented in this paper.
Case 1: A 12-year-old male visited our clinic for examination of radio-opacity area, which had been pointed out by a dentist.
His cast of the face was asymmetry because of diffuse and bony hard swelling at the left mandibular angle. Intraorally, the buccal and lingual cortical bone swelling was found from the first moalr to the ascending ramus. Radiographic examination demonstrated a large well-circumscribed radiolucant mass. Within the lision were scattered foci of numerous calcification. Extirpation of the tumor was performed under general anesthesia. Histopathologically the tumor was derived from ameloblastic fibroma which contained islands of odontogenic epithelium, enamel and dentin. An unusual feature of interest was melanin pigments in the lision.
Case 2: A 7-year-old female came to our clinic for evaluation of swelling of the right mandible, which had been found by a group dental examination. Her cast of the face was assymmetry because of the swelling of the mandible.
Intraorally, the lesion was of bone-like hardness due to thumb-sized expansion of the underlying bone. Radiographs revealed a well-delinated monolocular radiolucent area from the right first deciduous molar to the right first molar.
They were intermixed with some calcified materials. Extirpation of the tumor was performed under general anesthesia. The tumor was consisted of ameloblastic fibroma which contained irregular enamel and dentin. The postoperative courses of both patients were uneventful.