遗传性多数磨牙缺失１例广东省陆丰市人民医院口腔科（５１６５００）庄晓云患者，女，２０岁，因要求拔除左下颌残根就诊。全身发育良好，颜面发育对称，牙列情况：６＋６６＋６存在，６｜残冠，６｜牙冠如双尖牙状，｜５残根，５｜５呈锥状，余恒牙形态正常，８７｜７８... One case of hereditary majority of molars missing Lufeng City People's Hospital of Guangdong Province Zhuang Xiaoyun (516,500) patients, female, 20 years old, due to require removal of the left lower jaw root treatment. The body is well developed, facial symmetry, dentition situation: 6 +66 +6 existence, 6 | residual crown, 6 | crown such as bicuspid, 5 residual roots, 5 | 5 was conical, the shape of the permanent teeth, 87 | 78. ..