单项选择题
A.8mm B.至少6mm C.4~6mm D.3~4mm E.1.5~2mm
舌杆离开龈缘应()A.8mmB.至少6mmC.4~6mmD.3~4mmE.1.5~2mm
单项选择题舌杆离开龈缘应()
前腭杆离开龈缘应()A.8mmB.至少6mmC.4~6mmD.3~4mmE.1.5~2mm
单项选择题前腭杆离开龈缘应()
前腭杆宽为()A.8mmB.至少6mmC.4~6mmD.3~4mmE.1.5~2mm
单项选择题前腭杆宽为()