Abstract: Objective: To investigate the clinical effects of the high speed turbine drilling gap in the treatment of mandibular impacted wisdom teeth.Methods: Eighty-two cases with impacted wisdom teeth were divided into experimental group(52 cases) and control group(30 cases).The experimental group and control group were treated with high speed turbine drill method and traditional bone chisel in extraction method,respectively.The operation time,postoperative trismus,pain and alveolalgia between two groups were compared.Results: Compared with the control group,the operation time,postoperative trismus and pain in experimental group were short,light and less,respectively(P<0.01).Three cases with alveolalgia in control group and no alveolalgia in experimental group were found,the difference of which was not statistically significant(P>0.05).Conclusions: The postoperative complications of high speed turbine drill in the extraction of impacted wisdom teeth is less and light,which can be applied for various clinical types of impacted teeth.