摘要
目的研究机用镍钛器械ProTaper和Hero642在根管预备中的临床应用。方法选取牙髓炎和根尖周炎的患牙125颗,分别采用ProTaper、Hero642和不锈钢K锉预备根管,侧向加压法充填根管.根据X线片评价根管预备和充填的效果。结果ProTaper和Hero642在弯曲根管的预备中明显优于不锈钢K锉,无台阶及根管偏移发生.根管预备后的疼痛率明显降低.操作时间缩短。结论镍钛机用根管预备器械具有良好的临床应用前景。
Objective To study and assess clinical application of two Nickel-Titanium（NiTi） rotary instru- ments,namely ProTaper and Hero 642, in preparation of root canals. Methods 125 teeth were divided into three groups and respectively instrumented by stainless K-files, ProTaper or Hero 642 rotary instruments. All teeth were obturated with lateral condensation method. The efficiency of preparation and obturation was analyzed with radio-graphs. Results NiTi rotary instruments were better in keeping the curvature and flow of curved canals than stain-less K files. There was no transportation, apical blockage and ledge in NiTi groups. The operative time was shorter and endodontic flare-up seldom occurred in NiTi groups. Conclusion The NiTi rotary instrumentation technk]ue could be used to prepare curved root canals effectively and quickly. The future use of NiTi engine-driven rotary instrument appeared to be promising.
出处
《中国基层医药》
CAS
2007年第12期1947-1948,共2页
Chinese Journal of Primary Medicine and Pharmacy
关键词
镍钛器械
根管预备
弯曲根管
Nickel-Nitanium instruments
Root,canal prcparation
Curved root canals
