K3机用镍钛锉与K锉的临床应用比较

Comparison of Clinical Application between K3 Rotary Nickel-titanium Files and K Files

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.