Effect of movement kinematics on the cyclic fatigue resistance of nickel–titanium instruments

Karataş, Ertuğrul; Arslan, Hakan; Büker, Mine; Seçkin, Fatih; Çapar, İsmail Davut

doi:10.1111/iej.12453

Cited by 47 publications

(49 citation statements)

References 15 publications

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“…Consequently, the reciprocating motion used could explain the higher cyclic fatigue resistance results observed for both instruments tested in reciprocating OTR than continuous rotation. In agreement with the present results, it was reported that reciprocation improves cyclic fatigue resistance of NiTi files compared to continuous rotation (9)(10)(11)(12)29).…”

Section: Discussionsupporting

confidence: 93%

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Influence of Continuous or Reciprocating Optimum Torque Reverse Motion on Cyclic Fatigue Resistance of Two Single-File Nickel-Titanium Rotary Instruments

Pedullà¹,

Corsentino²,

Ambu³

et al. 2017

Eur Endod J

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Objective: Different single-file instruments and kinematics have been introduced on the market. It is important to know the cyclic fatigue performance of these instruments in these new kinematics such as reciprocation of Optimum Torque Reverse (OTR) motion. The aim of this study was to evaluate the resistance to cyclic fatigue of F6 SkyTaper and OneShape used in continuous rotation (proper rotation) or in reciprocating OTR motion. Methods: A total of forty-eight nickel-titanium files were tested. Twenty-four instruments of both brands were divided into two groups (n=12) on the basis of the motion tested: continuous rotation (group 1) or reciprocating OTR motion (group 2). Resistance to cyclic fatigue was determined by recording time to fracture (TtF) in a stainless steel artificial canal with a 60° angle of curvature and 5 mm radius of curvature. Data were analysed by two-way analysis of variance and post-hoc Bonferroni tests for multiple comparisons with P<0.05 as the level of significance. Results: F6 SkyTaper showed higher TtF compared with OneShape, both in continuous and in OTR motion (P<0.0001). The two tested instruments showed higher cyclic fatigue resistance in reciprocating OTR motion than continuous rotation (P<0.0001). Conclusions: OTR motion significantly improves cyclic fatigue resistance of the tested instruments. In addition, F6 SkyTaper showed higher cyclic fatigue resistance than OneShape in both motions.

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Section: Discussionsupporting

confidence: 93%

“…Studies have reported that a reciprocating motion might extend the lifespan of a NiTi instrument, and thus resistance to fatigue, with respect to continuous rotation (9)(10)(11)(12). However, it has also been reported that a reciprocating motion presents some limitations such as major debris transportation toward the apex (13).…”

Section: Highlightsmentioning

confidence: 99%

Influence of Continuous or Reciprocating Optimum Torque Reverse Motion on Cyclic Fatigue Resistance of Two Single-File Nickel-Titanium Rotary Instruments

Pedullà¹,

Corsentino²,

Ambu³

et al. 2017

Eur Endod J

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“…Therefore, to minimize this drawback, the manufacturers have developed new instruments with various cross‐sections, designs and thermomechanical treatments (Karataş et al . ).…”

Section: Introductionmentioning

confidence: 97%

Torsional fatigue resistance of pathfinding instruments manufactured from several nickel‐titanium alloys

et al. 2017

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“…, Karataş et al . ). In particular, various heat treatments of the NiTi alloy and the reciprocating motion have been reported to increase the resistance of files to cyclic fatigue failure (Pedullà et al .…”

Section: Introductionmentioning

confidence: 97%

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

et al. 2018

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Effect of movement kinematics on the cyclic fatigue resistance of nickel–titanium instruments

Abstract: When using new generation OneShape and WaveOne instruments, all the reciprocating motions (150° CW-30° CCW, 210° CW-30° CCW and 360° CW-30° CCW) resulted in extended fatigue life when compared with continuous rotation.

Cited by 47 publications

References 15 publications

Influence of Continuous or Reciprocating Optimum Torque Reverse Motion on Cyclic Fatigue Resistance of Two Single-File Nickel-Titanium Rotary Instruments

Influence of Continuous or Reciprocating Optimum Torque Reverse Motion on Cyclic Fatigue Resistance of Two Single-File Nickel-Titanium Rotary Instruments

Torsional fatigue resistance of pathfinding instruments manufactured from several nickel‐titanium alloys

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

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