Kalra Pinky, Rao Arathi, Suman Ethel, Shenoy Ramya, Suprabha Baranya-Shrikrishna
Ex-Post Graduate Student, Paedodontics & Preventive Dentistry, Manipal College of Dental Sciences, Mangalore, Manipal University, Karnataka State, India.
Professor & Head, Paedodontics & Preventive Dentistry, Manipal College of Dental Sciences, Mangalore, Manipal University, Karnataka State, India.
J Clin Exp Dent. 2017 Feb 1;9(2):e254-e258. doi: 10.4317/jced.53340. eCollection 2017 Feb.
Endodontic instrumentation carries the risk of over extrusion of debris and bacteria. The technique used and the type of instrumentation influences this risk.
The purpose of this study was to evaluate and compare the K-file, ProTaper hand and ProTaper rotary instrumentation systems for the amount of apically extruded debris, irrigant solution and intracanal bacteria.
Experimental single blinded randomized type of in vitro study with sample of 30 single rooted teeth. Endodontic access cavities were prepared and the root canals were filled with the suspension of . Myers and Montogomery Model was used to collect apically extruded debris and irrigant. Canals were prepared using K files, Hand protapers and Protaper rotary files.
Non Parametric test like Kruskal-Wallis and Mann-Whitney U test were applied to determine the significant differences among the group.
Tests revealed statistically significant difference between the amount of debris and number of bacteria extruded by the ProTaper hand and the K-files. No statistically significant difference was observed between the amounts of irrigant extruded by the ProTaper hand and the K-file system. Statistically significant differences were observed between the amounts of bacteria and irrigant extruded by the ProTaper rotary and the Protaper hand. No statistically significant difference was observed between the amounts of debris extruded by the ProTaper hand and the K-file system.
Amount of apical extrusion of irrigant solution, bacteria and debris are significantly greater with K File instruments and least with Protaper rotary instruments. Protaper, rotary, periapical extrusion.
根管治疗器械操作存在碎屑和细菌过度挤出的风险。所使用的技术和器械类型会影响这种风险。
本研究的目的是评估和比较K锉、手用ProTaper和ProTaper旋转器械系统在根尖挤出的碎屑、冲洗液和根管内细菌的量。
采用实验性单盲随机体外研究，样本为30颗单根牙。制备根管入口洞形，并用. Myers和Montogomery模型的悬浮液填充根管。使用K锉、手用ProTaper锉和ProTaper旋转锉预备根管。
应用非参数检验如Kruskal-Wallis检验和Mann-Whitney U检验来确定组间的显著差异。
测试显示，手用ProTaper锉和K锉挤出的碎屑量和细菌数量之间存在统计学显著差异。手用ProTaper锉和K锉系统挤出的冲洗液量之间未观察到统计学显著差异。ProTaper旋转锉和手用ProTaper锉挤出的细菌量和冲洗液量之间存在统计学显著差异。手用ProTaper锉和K锉系统挤出的碎屑量之间未观察到统计学显著差异。
K锉器械根尖挤出的冲洗液、细菌和碎屑量显著大于ProTaper旋转器械，而ProTaper旋转器械最少。ProTaper、旋转、根尖周挤出。
