Cyclic fatigue resistance of R‐Pilot, HyFlex EDM and PathFile nickel‐titanium glide path files in artificial canals with double (S‐shaped) curvature

Abstract

R-Pilot NiTi glide path files, used in a reciprocating motion, had the greatest cyclic fatigue resistance amongst the tested NiTi glide path files in an artificial S-shaped canal.

Comparison of cyclic fatigue resistance and bending properties of two reciprocating nickel‐titanium glide path files

“…Uslu et al . () recently reported that the cyclic fatigue resistance of R‐Pilot files was significantly higher than that of HyFlex EDM and PathFile instruments. The authors attributed these results to the reciprocating motion with which the R‐pilot files are used, rather than the continuous rotary motion of HyFlex EDM and PathFile instruments.…”

“…Considering that the alloy and kinematic characteristics of WOG and Reciproc files are similar to those of WOG Glider and R-Pilot files, respectively, the greater time to fracture values of R-Pilot might be related to the design of the files and the smaller horizontal cross-sectional area than WOG Glider measured in the SEM images. Uslu et al (2018) recently reported that the cyclic fatigue resistance of R-Pilot files was significantly higher than that of HyFlex EDM and PathFile instruments. The authors attributed these results to the reciprocating motion with which the R-pilot files are used, rather than the continuous rotary motion of HyFlex EDM and PathFile instruments.…”

“…R-Pilot (VDW, Munich, Germany) and WaveOne Gold Glider (WOG Glider; Dentsply Sirona Endodontics, Ballaigues, Switzerland) have been recently introduced to prepare a glide path in root canals using a reciprocating motion. R-Pilot file was the first NiTi glide path file operated in reciprocation to be introduced on the market and has an S-shaped horizontal cross section, 0.125 mm tip diameter and 4% constantly increasing taper, and it is made of M-Wire alloy (Uslu et al 2018). WOG Glider is a reciprocating glide path file with a parallelogram horizontal cross section with two cutting edges, 0.15 mm tip diameter and 2-6% increasing variable taper made of a thermomechanically treated alloy termed 'Gold' by the manufacturer.…”

Cyclic fatigue resistance of new reciprocating glide path files in 45‐ and 60‐degree curved canals

“…On the contrary, Uslu et al . () concluded that a file with controlled memory (HyFlex EDM; Coltène Whaledent, Altstätten, Switzerland) exhibited lower cyclic fatigue resistance than a file made of M‐wire alloy (R‐PILOT) in an artificial S‐shaped canal.…”

“…Engine-driven instruments, specifically designed for glide path preparation, have been developed (Paleker & van der Vyver 2016, Uslu et al 2018. Recently, glide path systems, using reciprocation motion, such as the WaveOne Gold Glider (Dentsply Sirona, Ballaigues, Switzerland) and R-PILOT (VDW GmbH, Munich, Germany), were launched.…”