7.當下顎後牙前拉(posterior tooth protraction)時,下列何者可以加強門齒錨定(anchorage)?
(A)門齒近心側牙根傾斜(mesial root tipping)
(B)門齒遠心側牙根傾斜(distal root tipping)
(C)門齒唇側牙根扭矩(labial root torque)
(D)門齒舌側牙根扭矩(lingual root torque)
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統計: A(61), B(52), C(428), D(544), E(0) #2969411
統計: A(61), B(52), C(428), D(544), E(0) #2969411
詳解 (共 3 筆)
#6157076
臼齒往前,門齒往後(lingual tipping,root往labial倒)-->給予root lingual torque平衡
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