37.齒齦邊緣修整器(gingival margin trimmer)不具有下列何種特點?
(A)可用於齒髓軸面線角(pulpoaxial line angle)修整成斜面
(B)刀峰刃部(blade)呈曲面
(C)刀峰切緣(cutting edge)與刀峰刃部(blade)垂直
(D)修整器有左右之分
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統計: A(47), B(71), C(341), D(72), E(0) #1032692
統計: A(47), B(71), C(341), D(72), E(0) #1032692