Abstract: Objective： To compare the effect of high speed turbine method and traditional bone chisel method in mandibular impacted third molar extraction. Methods： Eighty patients with bilaterally symmetrical middle and low mesioangular impaction mandibular third molars were randomly divided into high-speed turbine method and traditional bone chisel method. The operative time were recorded. The patients were followed up for 2 and 5 days after operation. The postoperative complications such as swelling, pain, limitation of mouth opening, dry socket, numbness of lower lip were recorded. Results： The average operation time of the high speed turbine group was (12.40±3.85)min, which was significantly lower than that of the traditional method group by (17.27±4.47) min (P＜0.05). High speed turbine group was also superior to the traditional bone chisel method group in postoperative pain, swelling and limitation of mouth opening (P＜0.05). There was no statistical significance between the two groups in postoperative bleeding, dry socket and the lower lip numbness (P＞0.05). Conclusions： High-speed turbine method has the advantages of less trauma, shorter operative time and less complications.