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Table 7 Comparison of pain and swelling variables at different times of laser surgery

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

Paired t test (P value) Laser (t2) Laser (t1) Variables
S.D Mean S.D Mean
0.0001 1.447 6.33 0 0 Pain before surgery (t1) and after surgery (t2)
0.0001 1.352 3.40 0 0 Pain before surgery (t1) and day 2 after surgery (t2)
0.0001 0.704 1.07 0 0 Pain before surgery (t1) and day 7 after surgery (t2)
0.0001 1.352 3.40 1.447 6.33 Pain after surgery (t1) and day 2 after surgery (t2)
0.0001 0.704 1.07 1.447 6.33 Pain after surgery (t1) and day 7 after surgery (t2)
0.0001 0.704 1.07 1.352 3.40 Pain day 2 after surgery (t1) and day 7 after surgery (t2)
0.0001 1.925 39 1.905 38.662 Swelling before surgery (t1) and after surgery (t2)
0.0001 2.022 39.8 1.905 38.662 Swelling before surgery (t1) and day 2 after surgery (t2)
0.002 1.939 38.899 1.905 38.662 Swelling before surgery (t1) and day 7 after surgery (t2)
0.0001 2.022 39.8 1.925 39 Swelling after surgery (t1) and day 2 after surgery (t2)
0.195 1.939 38.899 1.925 39 Swelling after surgery (t1) and day 7 after surgery (t2)
0.0001 1.939 38.899 2.022 39.8 Swelling day 2 after surgery (t1) and day 7 after surgery (t2)