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Table 2 Incidence of postoperative edema for each space according to the anesthetic methods and maxillary third molar extraction

From: Classification of postoperative edema based on the anatomic division with mandibular third molar extraction

  N Time to MRI (h, SD) Postoperative edema (%)
Buccinator muscle Supra-periosteum space Buccal space Parapharyngeal space Lingual space
Anesthetic method
 Local 24 4.71 (9.41) 62.96 70.37 37.93 62.07 21.43
 General 20 17.65 (20.98) 79.17 78.57 57.14 46.15 32.14
P*    0.519 0.728 0.760 > 0.999 > 0.999
Simultaneous extraction of maxillary third molar
 Only mandibular third molar 9 7.56 (15.22) 60.00 63.64 41.67 41.67 0.00
 With maxillary third molar 35 11.37 (17.38) 73.17 77.27 48.89 58.14 34.09
P*    0.298 0.669 > 0.999 0.057 0.085
  1. *A P value of < 0.05 was considered statistically significant with Fisher exact test