牙源性肿瘤在动物体内很少自然发生,已经报导的也只是少数用化学方法诱导的牙源性肿瘤的动物模型。然而这些诱发的肿瘤中只有少数是造釉细胞瘤。本文报导首例在实验动物体内经胎盘诱发的造釉细胞瘤。方法:五只雌性查尔斯顿河白鼠(Charles River albino rat),体重250～350克,每只鼠在妊娠第17～21天时从尾部静脉一次 Dentinogenic tumors rarely occur naturally in animals and only a few animal models of chemically induced odontogenic tumors have been reported. However, only a few of these induced tumors are ameloblastomas. This article reports the first case of placenta-induced ameloblastoma in experimental animals. METHODS: Five female Charleston albino rats (250 to 350 g) were used. Each rat was used once from the tail vein at 17 to 21 days of gestation.