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Table 7 Comparison of postoperative complications among the three groups (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

WI

DSD

FB

JD

LLN

Total

EAG

84

2

1

1

0

2

6(7.1%)

EBG

53

2

1

3

1

2

9(17.0%)

CG

63

7

3

5

3

5

23(36.5%)

χ2

21.69

P

0.017