摘要
目的 :比较临床常用扩锉器械的根管清理效果。方法 :将 6 0个离体牙随机分为 6组 ,分别为空白对照组、K型钻组、K型钻和锉组、K型钻和H型锉组、K型锉组和超声扩锉组 ,采用逐步后退法预备根管。扫描电镜观察根管内壁。结果 :根管壁碎屑面积比较 ,K型锉组 >K型钻组 >K型钻和锉组 >空白对照组 >K型钻和H型锉组 >超声扩锉组 ,且前 3组与其余各组之间具有显著性差异 (P <0 .0 5 ) ,而后 3者之间无显著性差异 (P >0 .0 5 )。结论 :超声扩锉与K型钻和H型锉效果最好 ;K型钻与K型锉交替使用次之 ;单纯扩或锉不能有效进行根管清理。
AIM: To investigate the effects of root canal preparation by different instrumentation. METHODS: The fresh extracted 60 single-rooted teeth were collected,then random distributed in 6 groups with 10 of each. Group 1, the negative control; group 2, reaming instrumentation with reamers only; group 3, reaming and filing instrumentation with reamers and K files; group 4, reaming and filing instrumentation with reamers and H files; group 5, filing instrumentation with K files only; group 6, the ultrasonic instrumentation. The effects of canal preparation were evaluated by Scanning electron microscopic photomicrographs. RESULTS: The debris area of the root canal wall of group 5 was the largest, followed by group 2, group 3, group 1, group 4 and group 6. There was significant difference between the group5/group2/group3 and the other groups(P<0.05). However, there was no significant difference among the last three groups(1,4&6) (P<0.05). CONCLUSION: The effect of the ultrasonic treatment and the reamer and H file treatment were the best. K file or reamer file can not effectively remove the debris. The result is useful for the canal preparation in endodontic therapy.
出处
《牙体牙髓牙周病学杂志》
CAS
2002年第6期320-322,共3页
Chinese Journal of Conservative Dentistry
关键词
根管器械
根管预备
扫描电镜
root canal instrumentation
root canal preparation
scanning electron microscopy
