37.以下矯正裝置何者無法矯治後牙錯咬(posterior crossbite)?
(A)split palatal expansion appliance
(B)fixed porter arch
(C)inclined plane
(D)quad-helix appliance
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統計: A(8), B(31), C(349), D(15), E(0) #1031972
統計: A(8), B(31), C(349), D(15), E(0) #1031972
