47 以下矯正裝置何者無法矯治後牙錯咬(posterior cross bite)?
(A) split palatal expansion appliance
(B) fixed porter arch
(C) inclined plane
(D) quad-helix appliance
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統計: A(1), B(3), C(7), D(1), E(0) #2736801
統計: A(1), B(3), C(7), D(1), E(0) #2736801