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Table 4 Comparison of postoperative pain VAS values among the three groups of patients (n = 200, \(\overline{x}\) ± s)

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

1d after surgery

2d after surgery

3d after surgery

EAG

84

3.89 ± 0.96

3.05 ± 1.06

2.20 ± 0.89

EBG

53

4.19 ± 1.29

3.62 ± 1.02

2.62 ± 0.90

CG

63

4.92 ± 1.05

4.14 ± 1.22

3.17 ± 0.98

χ [2] /F

 

16.58

17.90

20.06

P

 

0.000

0.000

0.000