目的：比较K3机用镍钛锉与手用K型锉的临床应用。方法：选择285颗患牙（失查数5颗），共526个根管，随机数字表法分为K3组和K锉组，分别用K3机用镍钛锉和K锉进行根管预备，比较两组患者根管预备时间、根管预备术后疼痛反应和根管充填质量。结果：K3组所用时间明显少于K锉组；K3组根管预备后疼痛发生率为（5.51％），较K锉组的根管预备后疼痛发生率（10.24％）明显降低（P<0.01）；K3组根管恰填率为（94.18％），较K锉组（86.22％）明显提高（P<0.01）。结论：K3机用镍钛锉预备根管具有效率高、成形能力强、根充效果好、明显减少术后疼痛等优点，是一种理想的根管预备器械，值得临床上广泛应用。%Objective:To make a comparison between K3 rotary nickel-titanium files and hand operated K files. Method:285 bad teeth(5 missing),totally with 526 incisive canals were divided into K3 group and K file group randomly,for which root canal preparations were made respectively with rotary nickel-titanium files and K files,to compare the time of root canal preparation,pain reaction after the preparation and filling quality of root canal within each group. Result:The result proved that the root canal preparation time using rotary nickel-titanium files of the K3 group was much less than that of the K file group. The rate of pain reaction after K3 preparation was 5.51%,which was less than that of K file group(10.24%)(P<0.05),and the well-filled rate of K3 group was 94.18%,which was more than that of the K file group(86.22%)(P<0.05). Conclusion:Rotary nickel-titanium files have high efficiency,strong shaping ability, good root filling effect,which can significantly reduce postoperative pain,ideal root canal preparation equipment,worthy of clinical application.
展开▼
