Method: 29 lower first molar Spaces were observed and the height of alveolarcrest before and after treatment were analyzed with paired-t tests.
方法：观察下颌第一磨牙陈旧性拔牙间隙29处。测量矫治前后该处牙槽嵴高度，将测量值进行配对t检验。
2
During implant surgery at 1 year after the guided surgery, fine regenerative bone and apparently wide alveolarcrest in the edentulous area were observed.
术后1年，牙种植手术中见再生骨质量好，缺牙区牙槽嵴宽度明显增宽。
3
Objective: on the base of animal experiments through the applying of MGTR in clinic to observe the defective and partially atrophy alveolarcrest regeneration for dental implants application.