56.牙周韌帶的principal fiber groups中,何者在一般的牙周手術時被切斷,並不會增加牙齒的鬆動度?
(A)alveolar crest fibers
(B)horizontal fibers
(C)oblique fibers
(D)apical fibers
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統計: A(737), B(88), C(57), D(339), E(0) #3064901
統計: A(737), B(88), C(57), D(339), E(0) #3064901