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

Özyürek, Taha; Uslu, Gülşah; Gündoğar, Mustafa; Yılmaz, Koray; Grande, Nicola M.; Plotino, Gianluca

doi:10.1111/iej.12911

Cited by 31 publications

(27 citation statements)

References 37 publications

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“…All the instruments were rotated in stainless steel artificial canals with a 60° angle of curvature and a 5 mm radius of curvature, as previously described [10]. All the canals reproduced the exact size and taper of the instruments to be tested.…”

Section: Methodsmentioning

confidence: 99%

Comparison of the cyclic fatigue resistance of VDW.ROTATE, TruNatomy, 2Shape, and HyFlex CM nickel-titanium rotary files at body temperature

et al. 2020

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Objectives: This study aims to compare the cyclic fatigue resistance of VDW.ROTATE, TruNatomy, 2Shape, and HyFlex CM nickel-titanium (NiTi) rotary files at body temperature. Materials and Methods: In total, 80 VDW.ROTATE (25/0.04), TruNatomy (26/0.04), 2Shape (25/0.04), and HyFlex CM (25/0.04) NiTi rotary files (n = 20 in each group) were subjected to static cyclic fatigue testing at body temperature (37°C) in stainless-steel artificial canals prepared according to the size and taper of the instruments until fracture occurred. The number of cycles to fracture (NCF) was calculated, and the lengths of the fractured fragments were measured. The data were statistically analyzed using a 1-way analysis of variance and post hoc Tamhane tests at the 5% significance level (p < 0.05). Results: There were significant differences in the cyclic fatigue resistance among the groups (p < 0.05), with the highest to lowest NCF values of the files as follows: VDW.ROTATE, HyFlex CM, 2Shape, and TruNatomy. There was no significant difference in the lengths of the fractured fragments among the groups. The scanning electron microscope images of the files revealed typical characteristics of fracture due to cyclic fatigue. Conclusions: The VDW.ROTATE files had the highest cyclic fatigue resistance, and the TruNatomy and 2Shape files had the lowest cyclic fatigue resistance in artificial canals at body temperature.

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Section: Methodsmentioning

confidence: 99%

Comparison of the cyclic fatigue resistance of VDW.ROTATE, TruNatomy, 2Shape, and HyFlex CM nickel-titanium rotary files at body temperature

et al. 2020

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“…RP is a reciprocating glide path file made from M‐Wire alloy that has a 0.125 mm tip diameter, 4% constant taper and S‐shaped cross‐section (Özyürek et al . ).…”

Section: Introductionmentioning

confidence: 97%

“…WOGG is another glide path NiTi file made of a thermo‐mechanically treated alloy (termed Gold by the manufacturer) for reciprocating motion use with a tip size of 0.15 with a 2% taper that progressively increases up to 6% and has a parallelogram‐shaped cross‐section (Özyürek et al . ).…”

Section: Introductionmentioning

confidence: 97%

Cutting efficiency of conventional and heat‐treated nickel–titanium rotary or reciprocating glide path instruments

et al. 2019

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Aim To compare the cutting efficiency of several glide path files: HyFlex EDM Glidepath File (HEGF), One G (OG), R‐Pilot (RP) and WaveOne Gold Glider (WOGG) at different cutting inclinations. Methodology Cutting efficiency of 120 new HEGF, OG, RP and WOGG was tested at 90°, 70° and 45° inclination in relation to the sample. Depending on manufacturer instructions, instruments were tested in continuous rotation or reciprocating motion against standardized gypsum samples for 120 s using a customized apparatus. Cutting efficiency was determined by measuring the weight loss and the length of the sample cut. Data were analysed using two‐way analysis of variance and Tukey t‐test (P < 0.05). Results RP and WOGG had greater cutting ability than HEGF and OG in all tested angles. RP tested at 45° had significantly greater cutting efficiency than when tested at 90° and 70° (P < 0.05). OG was not significantly different in terms of cutting ability at 90°, 70° and 45° (P > 0.05). HEGF and WOGG had significantly greater cutting efficiency at 45° and 70° compared to 90° (P < 0.05), with no significant difference between 45° and 70° (P > 0.05). RP had the greatest cutting ability at all tested angles. Conclusions Reciprocating glide path instruments had greater cutting efficiency compared to those in continuous rotation. An inclined insertion (45° or 70°) increased the cutting ability of glide path files except for One G conventional NiTi files.

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“…2015, Özyürek et al . 2018, Topçuoğlu et al . 2018).…”

Section: Introductionmentioning

confidence: 99%

A laboratory study of the scouting ability of two reciprocating glide path instruments in mesial root canals of extracted mandibular molars

et al. 2021

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Aim To evaluate in a laboratory setting the performance of two reciprocating glide path systems, WaveOne Gold Glider (WO) and R‐Pilot (RP), to create a glide path in mesial root canals of mandibular molars and to assess the torsional resistance of instruments after performing the glide path. Methodology A total of 60 mesial root canals of extracted human mandibular molars were divided into two groups (n = 30) according to the glide path system to be used. The data from the volume of each canal, acquired by microcomputed tomography (micro‐CT), were validated statistically for the anatomical pairing of the groups. Preparation time, frequency in gaining apical patency, plastic deformation rate of instruments, and canal transportation and centring ability were recorded and compared statistically. The torsional fatigue of the instruments after use was also evaluated. Data were analysed using Fisher’s exact test and Mann–Whitney U‐test with a 5% significance level. Results No significant differences were found between groups regarding the time required to perform the glide path, the frequency distributions of the canals classified as patent and the instruments with plastic deformation after use (P > 0.05). No significant differences were found between groups regarding the degree of canal transportation and centring ability at the cervical, middle and apical thirds (P > 0.05). The RP groups had significantly greater maximum torsional strength values compared with the WO groups (P < 0.05). The used WO group had greater angular deflection to fracture when compared to the new WO group (P < 0.05). A significant difference was also found in the percentage of loss of angular deflection in a comparison of the WO group with the RP group (P < 0.05). Conclusions The WO and RP instruments performed the same in terms of preparation time, plastic deformation, gaining apical patency, degree of canal transportation and centring ability. The RP instruments had greater torsional strength, less angular deflection and lower percentage of loss in angular deflection than the WO. The used WO group had the greatest angular deflection values.

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

Abstract: A significant greater cyclic fatigue resistance was observed for R-Pilot files compared to WOG Glider instruments, although the bending resistance of WOG Glider files was lower.

Cited by 31 publications

References 37 publications

Comparison of the cyclic fatigue resistance of VDW.ROTATE, TruNatomy, 2Shape, and HyFlex CM nickel-titanium rotary files at body temperature

Comparison of the cyclic fatigue resistance of VDW.ROTATE, TruNatomy, 2Shape, and HyFlex CM nickel-titanium rotary files at body temperature

Cutting efficiency of conventional and heat‐treated nickel–titanium rotary or reciprocating glide path instruments

A laboratory study of the scouting ability of two reciprocating glide path instruments in mesial root canals of extracted mandibular molars

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