77. 下列何種方法最不易有牙周囊袋復發的情形?
(A)根向移位翻瓣術(apically positioned flap)
(B) 牙齦下刮除術(subgingival curettage)
(C) 改良式魏德曼翻瓣術(modified Widman flap) positioned flap)
(D) 側移位翻瓣術(laterally

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統計: A(15), B(3), C(5), D(0), E(0) #2757356