A 颈部微向腭侧倾斜 B
近中舌尖与牙A平面接触 C
近中颊尖离开<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230804/12260314_0.gif">平面1.0mm D
远中颊尖离开<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230804/12260314_0_1.gif">平面1.5mm E
远中舌尖离开<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230804/12260314_0_2.gif">平面2.0mm