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Table 3 Comparison of the degree of psychological state in three groups of patients during operation (n = 200, cases (%))

From: Application of an ultrasonic bone knife combined with a dental electric motor in the extraction of mandibular middle and low impacted teeth

Group

Number of cases

1分

2分

3分

4分

EAG

84

5(6%)

13(15.5%)

36(42.9%)

30(35.7%)

EBG

53

3(5.7%)

10(18.9%)

22(41.5%)

18(34%)

CG

63

12(19%)

26(41.3%)

16(25.4%)

9(14.3%)

H

65.376

P

0.000

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BMC Oral Health

ISSN: 1472-6831

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