特发性骨腔亦被称为创伤性骨囊肿。作者通过外科探查术,在15个月内发现9例,证实本病比过去报导的更为普遍。大多数病例没有症状,是在常规摄片时被发现的。9例中,年龄11～19岁。男性5例,女性4例。病变均在下颌骨,左侧者6例,右侧者3例。病变范围在尖牙到第三磨牙区, Idiopathic bone cavity is also known as traumatic bone cysts. By surgical exploration, the authors found 9 in 15 months, confirming the disease was more prevalent than previously reported. Most cases have no symptoms and were found during routine radiography. 9 cases, aged 11 to 19 years old. 5 males and 4 females. Lesions were in the mandible, left in 6 cases, right in 3 cases. Lesions in the canine to the third molar area,