先天性无恒胚畸形,属牙体发育异常的一希罕疾病,今将我们所见之二例(同胞兄弟)报告如下: 例一:患者彭××,男性,15岁,学生。湖北黄陂县人,于1977年9月2日就诊,主诉:缺牙既往史:幼小多病,曾患支气管炎,肺炎,平时易患感冒,常头痛,视物不清,学习成绩欠佳。父母健在,母妊娠时未患病。家族中除其弟外,其他成员无类似病 Congenital absence of embryo deformity, is a rare disease of dental development, now we will see the two cases (siblings) reported as follows: Example 1: Pat × ×, male, 15 years old, student. People in Huangpi County, Hubei Province, visited September 2, 1977 and complained of a history of tooth missing: young and ill, suffering from bronchitis and pneumonia. He was usually predisposed to a cold, often had a headache and was ill-informed and had poor academic performance. Healthy parents, pregnant women did not get sick. In addition to his brother in the family, other members no similar disease