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牙中牙是釉质器陷入正在发育的牙乳头中的结果,其病理机制尚不明了。本文报告一例由于牙中牙而形成囊肿使上颌窦闭塞的病例,需要作根管治疗,同时邻近的四只牙需行根尖切除术。
Dental teeth are the result of the enamel being trapped in the developing dental papilla, and its pathological mechanism is not known. This article reports a case of occlusion of the maxillary sinus caused by the formation of a cyst in the tooth, which requires root canal treatment and the adjacent four teeth requiring apical resection.