The pain will be measured from an analog scale from 0 to 10 corresponding to: 0 = no pain, 1 and 2 = MILD, (easily tolerated), 3 to 5 = MODERATE (tolerable discomfort), 6 to 8 = strong (discomfort difficult to tolerate) and 9 to 10 = VERY STRONG (unbearable), besides the pain score annotations at pre-set times (immediate postoperative period, 4 and 8 hours postoperatively).