Results Operation by turbine drill spent less time than that by traditional chisel(average min vs average 8 min,P<0.0).
Results Operation by turbine drill spent less time than that by traditional chisel(average min vs average 8 min,P<0.0).
果涡轮机钻法手术时间(平均min)明显比劈冠法(平均 8min)短(P<0.0)。