45.下列何種邊緣修形線(margin)最不適用於全瓷冠(all ceramic crown)?
(A)重弧形緣(heavy chamfer)
(B)圓化肩台緣(rounded shoulder)
(C)傾斜肩台緣(sloping shoulder)
(D)九十度角肩台緣(90-degree cavosurface angle shoulder)
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統計: A(70), B(29), C(169), D(48), E(0) #1034631
統計: A(70), B(29), C(169), D(48), E(0) #1034631
詳解 (共 4 筆)
#5883557
111-2-46.有關上顎前牙全瓷冠(all ceramic crown)之敘述,下列何者正確?①傾斜肩形邊緣(sloping shoulder margin)設計較重圓弧邊緣(heavy chamfer margin)設計佳 ②舌面中心接觸點(centric contact)最好位於 牙冠中間1/3(middle third) ③鄰接面邊緣(proximal margin)之瓷厚度至少要達到0.5 mm ④唇面引導溝 (guiding groove)之修磨深度大約0.8 mm
(A) ①②
(B) ③④
(C) ①③
(D) ②④
D
D
3
0