49 下列那種齒頸部邊緣形態最適合製作瓷融合金屬冠(porcelain fused to metal crown)的瓷側邊緣 (porcelain margin)?
(A)刀緣(knife edge)
(B)肩台緣(shoulder)
(C)羽毛緣(feather edge)
(D)斜面肩台緣(shoulder with bevel)

答案:登入後查看
統計: A(4), B(313), C(10), D(65), E(0) #901032