上下颌前突的病例,通过口外力牵引装置与何种牵引共用使用,能使上下颌前牙最大程度地向舌

题型:单项选择题 B型题

问题:

上下颌前突的病例,通过口外力牵引装置与何种牵引共用使用,能使上下颌前牙最大程度地向舌侧移动,以使前突的侧貌得到很好的改善,这种牵引是()

A.Ⅱ类颌间牵引

B.Ⅲ类颌间牵引

C.颌间垂直牵引

D.颌内牵引

E.颌外牵引

考点:口腔正畸主治医师口腔正畸学口腔正畸学题库
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