Surgical treatment in patients with facial bone surgeries governs a meaningful extent of tissue trauma prompting prevalent postoperative portents of pain, facial swelling, and inconvenience. Beneficial effects of local cold therapy following surgery, facial swelling, pain, and inflammation have been discussed. The aim of study is to evaluate the efficacy of hilotherm cooling system in reducing postoperative pain and edema in patients following maxillofacial trauma and orthognathic surgeries.A clinical prospective study was done in the postoperative period for patients with facial trauma or those subjected to orthognathic surgery, 34 patients divided randomly into 2 groups; study group treated with the hilotherm cooling system and control group without. Facial swelling was quantified by 5 linear distances (A, B, C, D, and E). Pain was reported on day 1, 2, and 7 postoperatively. Satisfaction with cooling therapy at day 7 following surgery was recorded. The means of swelling variation in study group were less than in control group with highly significant difference (P < 0.01) except in (line D) which is from tragus to the chin most prominent point where it was significant. Pain scores in control group were higher than in study group with highly significant difference (P < 0.01) except at 7th day which was not significant (P > 0.05). All patients in the study group were very satisfied.