Comparison of single and multiple file rotary endodontic instruments for debris and irrigant extrusion: An in vitro study

Abstract

Aim: The aim of this study was to assess and compare the quantity of apically debris which was extruded apically by TruNatomy (TN), ProTaper Next (PTN), HyFlex electric discharge machining (EDM), and HyFlex controlled memory (CM), following root canal preparation. Materials and Methods: Sixty extracted single-canal mandibular premolars were used. The root canal preparation was done with TN, HyFlex EDM, PTN, or HyFlex CM files. The preweight debris, which was extruded apically, was collected in the Eppendorf tube and later on incubated at 670°C for 3 days and weighed again to record the extruded debris. Results: The result showed that there was a significant reduction in debris extrusion by TN system, followed by PTN system, HyFlex EDM, and maximum extrusion in HyFlex CM ( P < 0.05). Between the PTN and TN groups as well as between the HyFlex EDM and HyFlex CM groups, statistically significant difference was not observed ( P > 0.05). Conclusion: Apical debris extrusion is the inherent nature of the all file systems. Nevertheless, the TN file system produced substantially minimum debris extrusion among other systems compared in the study.

Evaluating In Vitro Performance of a Novel Stainless Steel Rotary System (Gentlefile) Based on Debris Extrusion and Instrumentation Time

“…All the instrumentation techniques were found to be associated with apical debris extrusion in this study, which aligns with previous investigations [20][21][22]. The quantity of extruded debris is subject to variation depending on the design and kinematics of the instrument [5,6]. In the current study, Gentlefile did not demonstrate reduced debris extrusion when compared to ProTaper Universal or manual instrumentation.…”

“…The available literature indicates that all commonly adopted instrumentation techniques cause apical extrusion of debris. However, the amount of extruded debris varies among different systems and file designs [6]. Moreover, it has been documented that a lower extrusion of debris is often associated with a better treatment outcome [7].…”

“…Additionally, this system features a specific portable hand-piece with adjustable angulation, providing the files with high flexibility. This system has six files of different colors and sizes: gray (coronal file, 20 mm, 022 tip), black (25 mm, 034 tip), green (25 mm, 029 tip), blue (25 mm, 026 tip), red (25 mm, 023 tip), and yellow (25 mm, 021 tip) [5][6][7]. To the best of the authors' knowledge, there is very limited information regarding the extrusion of debris following the use of GF files [8,9].…”