46.第二類(class II)汞齊填補之窩洞修形時,鄰接盒型(proximal box)所做的固位溝(retention groove)需位於何處?
(A)軸向牙齦線角(axiogingival line angle)
(B)頰、舌側壁(buccal and lingual wall)
(C)牙齦壁(gingival wall)
(D)牙髓壁(pulpal wall)
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統計: A(328), B(695), C(61), D(73), E(0) #2408750
統計: A(328), B(695), C(61), D(73), E(0) #2408750