A 恢复的垂直距离过高或过低 B
人工牙<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/2859430_0_1.jpg">面过大 C
义齿咬合恢复不良 D
人工牙低<img border="0" alt="" src="https://img.weimei168.com/uploads/upimg/20230104/2859430_0_2.jpg"> E
基牙少或牙周情况差、牙槽嵴低平,牙槽嵴黏膜薄