Clinical evaluating of Twisted Files (TF) and ProTaper nickel-titanium rotary instruments in preparation of molar curved root canals in the elder combining with cone beam computed tomography
ZHANG Xiu-Qin
WANG Nan
MENG Min
Abstract：Objective:To study and evaluate clinical application of Twisted File (TF) and ProTaper , two nickel-titanium instruments, during molar root canal preparation in elderly people.Methods:A total of 90 teeth with curved root canals , collected from August 2011 to August 2013 in Department of Stomatology, Affliliated Hospital of Jining Medical College, were prepared by TF(group t) ,ProTaper( groups p) with crown down technique in test groups and by stainless steel K files with Step-back technique in control group (group k).All root canals were filled with cold lateral condensation technique. The root canal preparation time and the numbers of broken equipment were recorded. The evaluation of preparation and root canal therapy was based on the treatment effect according to the X-ray images pre-,intra-and post-operation. Moreover, postoperative pain was also assessed. The apical transportation was calculated by cone-beam computed tomography (CBCT).Result:In both groups, root canals could maintain the original anatomy, and achieve desired result .The apical transportation and average root canal preparation time of the TF group was significantly less than that in group p and group k (P<0.05). Three ProTaper files were fractured in Protaper group, while no files were broken in TF group.Conclusion:Two rotary nickel-titanium system tested in this study are effective in the molar root canal preparation in elderly people. Compared with Protaper system, TF has better ability of higher efficiency, more secure, and thus more suitable for treating stenosis curved root canals in elderly patients.
Keywords：curved root canalsroot canal preparationrotary nickel-titanium instrumentsCBCT
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 342-345 )