患者女性,生后发现有二个牙,并迅速增长(在一天内长约1/2大米粒长),于1985年5月13日来我科就诊, 患儿足月顺产,第二胎。父母无近亲结婚,家族中无异常发育情况。 检查:患儿发育良好,五官端正,口腔颌面部检查无异常,舌活动正常;下颌牙槽嵴正常位置偏舌侧约0.2cm处,生长二处带蒂,柔软,可活动组织, Female patients, after birth, two teeth were found and rapidly growing (about 1/2 grain length in a day), came to our department on May 13, 1985, with full-term follow-up of children and a second child. Parents without any marriage, no abnormal development in the family. Check: children with good development, facial features, no abnormalities in oral and maxillofacial examination, normal tongue activity; mandibular alveolar ridges about the normal position of the lingual side of about 0.2cm, the growth of two pedicels, soft, movable tissue,