Objective: To study the implantology surgical unit method of impacted mandibular third molar extraction in order to reduce the incidence of dry socket. Methods: In 156 patients randomly selected, 156 impacted lower third molars on one side were removed using the implantology surgical unit method; 107 on the other side were removed by the conventional chisel method (and were the self-control). The number of dry sockets was recorded. Results: The incidence of dry socket in the implantology surgical unit group was significantly lower than in the conventional group. There were significant differences in the incidence of dry socket between the 2 methods (P < 0.005). Conclusion: The implantology surgical unit method is safer, faster and less traumatic than the chisel method, and more effective in dry socket prevention.