Resistance to Cyclic Fatigue Failure of a New Endodontic Rotary File

Bouska, Jason; Justman, Bruce C.; Williamson, Anne E.; DeLong, Christopher; Qian, Fang

doi:10.1016/j.joen.2012.01.016

Cited by 48 publications

(45 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Many studies have tested CF in metal devices with different designs including constricting the file into a curvature delimited by stainless steel pins (31,32) or using different types of simulated canals (10,14,24,33,34). The device used in this study allowed for the selection of the exact point at which CF resistance was to be tested (5 mm).…”

Section: Discussionmentioning

confidence: 99%

“…The thermal treatment of NiTi (9,13,14), cross-section of files (15,16), speed in continuous rotation (17,18), and manufacturing methods (5,9,19,20) are parameters that are known to influence the CF resistance of files. Testing the CF resistance of these 3 different systems allows for analysis of the relative importance of these parameters that supposedly influence the behavior of NiTi rotary files in clinical situations because each of these systems has characteristics that make it different from the others but, at the same time, somewhat comparable.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Cyclic Fatigue Resistance of K3, K3XF, and Twisted File Nickel-Titanium Files under Continuous Rotation or Reciprocating Motion

Pérez-Higueras

Arias

Macorra

2013

Journal of Endodontics

View full text Add to dashboard Cite

Introduction: New designs and alloys and different motions have been introduced to increase the cyclic fatigue (CF) resistance of nickel-titanium (NiTi) files. The aim of this study was to compare the CF resistance of K3 (SybronEndo, Orange, CA), K3XF (SybronEndo), and TF (SybronEndo) files under continuous rotation and reciprocating motion. Methods: A total of 210 files (30-tip diameter, 0.06 fixed taper), 60 K3, 60 K3XF, and 90 TF files, were divided into 7 groups (30 files each): K3-C, K3XF-C, and TF1-C were rotated at 300 rpm; TF2-C was rotated at 500 rpm; and K3-R, K3XF-R, and TF1-R were used in a reciprocating motion. CF resistance was tested in stainless steel, curved canals (60 , r = 3 mm) until fracture, and the time to fracture was recorded. The mean half-life, beta, and eta were calculated for each group and were compared with Weibull analysis. Results: The probability of a longer mean life was greater under reciprocating motion for all of the files (100% for K3, 87% for K3XF, and 99% for TF). Under continuous rotation, K3XF was more resistant than K3 and TF. TF lasted significantly longer than K3. TF was more resistant to CF when rotated at 300 rpm instead of 500 rpm. Under reciprocating motion, there were no significant differences between K3XF and TF mean lives, but both were significantly longer than the K3 mean life (78% for TF and 86% for K3XF). Conclusions: Reciprocating motion and R-phase increase CF resistance. (J Endod 2013;39:1585-1588

show abstract

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Cyclic Fatigue Resistance of K3, K3XF, and Twisted File Nickel-Titanium Files under Continuous Rotation or Reciprocating Motion

Pérez-Higueras

Arias

Macorra

2013

Journal of Endodontics

View full text Add to dashboard Cite

show abstract

“…[11,16] In many reports, a simulated canal in a steel block was used to evaluate the cyclic fatigue of NiTi instruments. [17][18][19] Similarly, in the present study a simulated canal in a steel block was used for the cyclic fatigue testing. Plotino, Grande [20] reported that the convex cylinder contacts the tapered instrument in a nonpredictable way so that the instrument may fit loosely and radius and angle of curvature may not be repeatable .…”

Section: Discussionmentioning

confidence: 99%

Comparison of cyclic fatigue resistance and shaping ability between two single-file reciprocating systems in curved canals

Yıldız¹

2017

Turk Endod J

View full text Add to dashboard Cite

“…On the other hand, some studies [35][36][37] proposed that the cross-sectional design was a significant determinant. In a supplementary examination using SEM, the cross-section of each instrument was captured at 5 mm away from the tip, and the area was measured using ImageJ software (http://rsbweb.nih.gov/ij).…”

Section: Discussionmentioning

confidence: 99%

Cyclic fatigue resistance of OneShape and WaveOne instruments using different angles of curvature

Elsaka

Elnaghy

2015

Dental Materials Journal

View full text Add to dashboard Cite

This study compared the cyclic fatigue resistance of OneShape (OS) instrument which used continuous rotation with WaveOne (WO) instrument which used reciprocating motion. OS size 25, 0.06 taper and WO primary size 25, 0.08 taper were used in simulated canals with 45°, 60°, and 90° angles of curvature until fracture. The number of cycles to fracture (NCF) was recorded to evaluate cyclic fatigue resistance. Data were statistically analyzed using two-way analysis of variance and Tukey's HSD test. Weibull analysis was performed on NCF data. WO had a significantly higher NCF than OS for all angles of curvature (p<0.05). According to Weibull distribution, WO instrument was predicted to have a higher number of cycles to survive than OS instrument. WO instrument which used the reciprocating motion had a greater resistance to cyclic fatigue than OS which used continuous rotation movement.

show abstract

Resistance to Cyclic Fatigue Failure of a New Endodontic Rotary File

Cited by 48 publications

References 19 publications

Cyclic Fatigue Resistance of K3, K3XF, and Twisted File Nickel-Titanium Files under Continuous Rotation or Reciprocating Motion

Cyclic Fatigue Resistance of K3, K3XF, and Twisted File Nickel-Titanium Files under Continuous Rotation or Reciprocating Motion

Comparison of cyclic fatigue resistance and shaping ability between two single-file reciprocating systems in curved canals

Cyclic fatigue resistance of OneShape and WaveOne instruments using different angles of curvature

Contact Info

Product

Resources

About