單項選擇題推磨牙向遠中的力是()

A.>500g
B.300~500g
C.200~300g
D.60g
E.150g


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1.單項選擇題抑制上頜生長的力是()

A.>500g
B.300~500g
C.200~300g
D.60g
E.150g

2.單項選擇題增加磨牙支抗的力是()

A.>500g
B.300~500g
C.200~300g
D.60g
E.150g

3.單項選擇題Begg矯治技術(shù)Ⅱ類牽引力是()

A.>500g
B.300~500g
C.200~300g
D.60g
E.150g

4.單項選擇題

我國遺傳因素占錯畸形的()

A.29.4%
B.91.2%
C.90%
D.50%
E.25%

5.單項選擇題固定矯治時釉質(zhì)脫礦發(fā)病率為()

A.29.4%
B.91.2%
C.90%
D.50%
E.25%

6.單項選擇題

口腔不良習(xí)慣占各類錯畸形的()

A.29.4%
B.91.2%
C.90%
D.50%
E.25%

7.單項選擇題6歲時神經(jīng)系統(tǒng)發(fā)育達到()

A.29.4%
B.91.2%
C.90%
D.50%
E.25%

9.單項選擇題

骨性Ⅲ錯ANB角為()

A.140°~160°
B.130°~140°
C.120°~125°
D.125°
E.<0°

10.單項選擇題新生兒下頜角為()

A.140°~160°
B.130°~140°
C.120°~125°
D.125°
E.<0°