A Study of the Frictional Force of Bracket - wire - ligature Structure

托槽- 弓 丝- 结扎 丝结构的磨擦力研究

And 4 weeks after ovariectomy ( or sham operation ) orthodontic wire were used to ligature the cervix of each first molar and then feed with high glucose softy foods to cause experimental periodontitis .

分别于卵巢切除术（或假手术）2周和4周后 结扎 上颌第一磨牙牙颈部，并以高糖 软食喂养，形成实验性牙周炎。

Purpose To explore the method and clinical effect of treating fresh patella fractures by way of steel wire ring ligature through skin puncture .

目的探索采用经皮穿刺 钢丝 环扎 术治疗新鲜髌骨骨折的方法和效果。