A 待测牙唇(颊)面颈1/3或中1/3处 B
待测牙面中央 C
待测牙腭舌侧中1/3 D
待测牙唇颊面切(<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230804/12258755_0.gif">)1/3 E
待测牙舌腭侧切(<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230804/12258755_0_1.gif">)1/3