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Abstract：
Midline clefts of mandible and lower lip are rare congenital facial deformities. Non-union of bone in the symphysis of the mandible, median cleft of the lower lip and tongue adherence in the midline to the floor of the mouth are the principle features of the anomaly. Early surgical correction of both hard and soft tissue defects resulted in excellent function such as mastication and speech. 12-yr follow-up shows total bony fusion of the symphysis and normal growth of mandible as per the chronologic age of patient.
摘要：
下颌骨和下唇中线裂是罕见的先天性面部畸形。下颌骨联合骨不连，下唇的正中裂口和舌头在中线粘附到口底是异常的主要特征。对硬组织和软组织缺损的早期手术矫正可产生出色的功能，例如咀嚼和言语。12年的随访显示，根据患者的实际年龄，联合骨完全融合和下颌骨的正常生长。
