12 有關永久上顎犬齒牙冠之敘述,下列何者正確?
(A)通常近遠心徑較唇舌徑大
(B)近心側切緣斜坡(mesioincisal slope)比遠心側切緣斜坡(distoincisal slope)短
(C)近心側切緣斜坡(mesioincisal slope)比遠心側切緣斜坡(distoincisal slope)長
(D)近心側切緣斜坡(mesioincisal slope)與遠心側切緣斜坡(distoincisal slope)等長

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統計: A(10), B(215), C(19), D(2), E(0) #1155686