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Table 2 Effect of operative time on postoperative swelling and trismus

From: Effect of age, impaction types and operative time on inflammatory tissue reactions following lower third molar surgery

Operative Time/Minutes   Swelling/mm Mouth Opening/%
   DAY2 DAY5 DAY7 DAY2 DAY5 DAY7
≤ 17 Mean 6.8900 2.1500 1.4567 63.6450 72.1510 79.4743
  N 30 30 30 30 30 30
  Std. Deviation 5.72968 2.65664 2.70933 18.61544 22.43444 22.35302
18-23 Mean 7.6189 3.4541 2.6649 66.5241 73.4819 81.7759
  N 37 37 37 37 37 37
  Std. Deviation 4.37168 3.73189 3.55162 23.08559 22.64894 22.45892
24-29 Mean 9.9632 4.2316 3.0158 56.5837 61.1089 67.7526
  N 19 19 19 19 19 19
  Std. Deviation 7.65014 4.31110 2.75606 15.73888 17.23444 21.27848
30-35 Mean 9.5218 2.9853 2.1441 59.2153 64.4185 68.9188
  N 34 34 34 34 34 34
  Std. Deviation 7.63341 3.61605 2.51603 20.02752 21.30764 22.86510
P value   .217 .223 .246 0.257 0.102 .032