Objectives:, The third molar is the last tooth to arise, so it is often retained or displaced if there is not enough space in the dental arc. Its extraction is one of the most important and frequent procedures of oral surgery. The procedure is usually performed with a scalpel, which produces post-surgery inflammation. To compare the inflammatory reaction for impacted third molar surgery between conventional and electro surgery techniques was the propose of this study. Methods:, the size of the sample was obtained through a pilot test to establish the percentage of patients that presented inflammation with both techniques. A total of 26 patients underwent a conventional scalpel operation for one molar and electro surgery for the other molar. All procedures were performed by the same specialist. Symptoms were collected 24, 48 and 72 hours following surgery. Results:, On 26 patients 52 surgical operations of impacted inferior first molars were practiced, of which 60% were of female gender and 40% male, the age fluctuated between 17 and 40, of which the highest percentage was of the age group of 15 to 25, this is explained by the stage of facial cranium development and the necessity to extract the third molars. A frequency analysis of post-surgical inflammation comparing both techniques indicates significant statistical differences (p<.01) at 24 and 48 hours , but not at 72 hours. Conclusion:. The tissue submitted to electro surgery presented less inflammation than the one treated with a scalpel.

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