80.承上題,下圖所示處理為切除性骨手術四個步驟之一,請問是那一步驟?
(A)radicular blending
(B)vertical grooving
(C)gradualizing marginal bone
(D)flattening interproximal bone
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統計: A(9), B(148), C(2), D(8), E(0) #1038074
統計: A(9), B(148), C(2), D(8), E(0) #1038074