In design process, the CT scan data were firstly rebuilt in three dimensions, then with I-DEAS software, the distractor was designed according to the characteristic of the alveolar.

• 在设计过程中首先对CT扫描的数据进行三维重建，然后根据牙槽突的特徵应用I-EAS软件设计出符合特殊要求的牙槽突牵引器。