患者女性,111/2岁,住县种子公司,于1995年8月1日在母亲陪同下来我院三门诊口腔志科求治。 口腔检查:口内有,均呈米样,圆锥样畸形,先天性缺失。前牙Ⅱ°深覆(牙合),口内存牙松动度Ⅱ°以上,尤以下前牙为甚,口 Female patients, 111/2 years old, lived in County Seed Company, on August 1, 1995 accompanied by his mother came to our hospital three clinics for treatment. Oral examination: There are mouth, were Mi sample, conical deformity, congenital absence. Ⅱ ° deep anterior teeth cover (occlusal), the mouth of the tooth mobility Ⅱ ° above, especially in the lower anterior teeth is even worse, mouth