70.下列何種黏膜齒齦手術(mucogingival surgery)僅適用於單一牙齒牙齦萎縮的處理?
(A)游離牙齦移植術(free gingival graft)
(B)雙側乳突翻瓣術(double-papilla flap)
(C)皮下結締組織移植術(subepithelial connective tissue graft)
(D)冠向移位翻瓣術(coronally displaced flap)
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統計: A(60), B(635), C(29), D(330), E(0) #3135057
統計: A(60), B(635), C(29), D(330), E(0) #3135057