52.下列何者沒有增加金屬嵌體復形固位(retention)的功能?
(A)垂直壁(vertical wall)儘量平行
(B)牙齦斜面(gingival bevel)
(C)做鄰接面固位溝(proximal retention groove)
(D)延伸到顏側/舌側面溝(facial/lingual surface groove)
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統計: A(47), B(303), C(3), D(32), E(0) #1032787
統計: A(47), B(303), C(3), D(32), E(0) #1032787