s
U1/L14.9/4.00.2/0.25.0/4.0
U2/L24.4/4.00.2/0.24.5/4.0
U3/L34.9/4.40.1/0.35.0/4.5
U5/L54.4/3.90.2/0.34.5/4.0
U6/L63.4/2.90.1/0.23.5/3.0
U7/L72.0/1.90.2/0.22.0/2.0
表2 拔牙病例上下牙弓个体直丝托槽定位值(mm)
Tab.2 Bracket placement chart with the preadjuited appliance for extraction cases(mm)