In a search for dry socket five hundred and thirty six (536) impacted third molars were surgically removed among 435 patients. Each patient was examined clinically and radiographically before surgery. 108impacted teeth were removed for prophylactic and 428 for therapeutic reasons. Astandard operating procedure was performed for each case and pre-operative and post-operative regimens was employed. After surgery each case was followed to determine the absence or presence of signs and symptoms …