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Table 3 Comparison of the amount of mouth opening to investigate trismus in the three surgical techniques

From: Use of piezoelectric surgery and Er:YAG laser:which one is more effective during impacted third molar surgery?

Paired t test (P value)

Conventional rotary instrument

Laser

Piezosurgery

Trismus

S.D

Mean

S.D

Mean

S.D

Mean

 

48.0

88.4

0.599

4.69

0.599

4.69

Before surgery

0.025

69.0

19.3

0.739

4.227

0.635

4.367

After surgery

0.0001

70.0

70.3

0.606

3.027

0.685

3.59

Day 2 after surgery

0.004

80.0

30.4

0.742

4.153

0.772

4.38

Day 7 after surgery