摘要
目的:研究不同锥度机用镍钛根管器械对根管管壁清洁率的影响。方法:选用80个单根管离体牙,随机分成4组,A组成形至30/0.04,B组成形至30/0.06,C组成形至30/0.08,而D组成形至30/0.10。纵劈各组根管,用扫描电镜观察根管壁的清洁度,并进行两两比较。结果:根冠1/3部位,4组的的差异无明显统计学意义(p>0.05);根中1/3部位,两两比较,4组的的差异有统计学意义(p<0.05);但B、C、D3组之间无明显统计学差异;根尖1/3部位,A与B相比,B与C相比,其差异均有统计学意义(p<0.05),但C和D组相比没有统计学意义(p>0.05)。结论:根管预备时增加机用镍钛器械的预备锥度,可提高根管壁清洁率。
Objective：To investigate the root canal cleanliness of the coronal, middle and apical levels after prepara- tion with the same apical stop and the different tapering Ni-Ti rotary instruments. Method： 80 extracted teeth of single root canal were randomly divided into four groups. Group A were shaped to 30/0.04, group B to 30/0.06, group C to 30/0.08 and group D to 30/0,10. Then the prepared root canals of 4 groups were split vertically. Root canal cleanliness was observed under scanning electron microscope. Result： In the coronal third level there were no significant differences between every two groups （P〉O.05） ：In the middle level, comparing every two groups,there was significant difference between four groups（P〈 0.05）. However, group B,C and D had no statistically significant difference between each other： While in the apical level, there were significant differences between group A and B,group B and C,but not the same with group C and D. Conclusion： Increasing shaping taper of Ni-Ti rotary instrument in root canal preparation would enhance the root canal cleanliness rate.
出处
《临床口腔医学杂志》
2007年第10期611-612,共2页
Journal of Clinical Stomatology
关键词
根管预备
镍钛根管器械
清洁度
root canal preparation
Ni-Ti rotary Instrument
cleanliness
