52.製作局部可撤式義齒之固位體(retainer)時,其咬合面鈎靠(occlusal rest)部位,金屬厚度至少須多少mm?
(A)0.5
(B)1.0
(C)1.5
(D)2.0
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統計: A(34), B(408), C(570), D(118), E(0) #2408596
統計: A(34), B(408), C(570), D(118), E(0) #2408596