Several diseases lead to mandibular symphyseal defects and have bad effect on the facial aesthetics and oral physical function.It is very important to restore mandibular symphyseal defects.

• 多种疾病导致下颌骨前部缺损,使患者的面部美观和口腔的生理功能都造成了很大的影响,修复下颌骨颏部的缺损就显得非常必要。