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【单选题】
关于牙齿的“松动度”的检查，下列说法错误的是A.
Ⅰ度松动：唇（颊）舌（腭）向松动
B.
Ⅱ度松动：唇（颊）舌（腭）向松动和近远中向松动
C.
Ⅲ度松动：唇（颊）舌（腭）向、垂直向均松动
D.
Ⅱ度松动：松动幅度1～2mm之间
E.
Ⅰ度松动：松动幅度小于1mm
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