興味ある所見を呈した上顎過剰逆生及び埋没歯牙嚢腫の1症例並びに其の文献的考察

　緒言

　先きに教室の平野は雑誌耳鼻咽喉科誌上に上顎逆生歯牙嚢腫の1症例に就いて発表したが，最近引続き当教室に於て興味ある所見を呈した上顎過剰逆生及び埋没歯牙嚢腫の小児症例を経験したので，平野が報告した症例に追加報告する次第である。

A gross dental anomaly in a boy, aged 6, is reported. The supernumerary premolar to-oth was found to be erupted superiorly into the maxillary sinus forming a cyst in this ca-vity and involving the region of frontal pro-cess and a part of anterior ethmoid with ano-ther cyst that appeared to be that of canine tooth. The patient recovered unevent fully after surgical treatment.