Comparison of Cyclic Fatigue Resistance of 5 Heat-treated Nickel-titanium Reciprocating Systems in Canals with Single and Double Curvatures

Al-Obaida, Mohammad I.; Merdad, Khalid; Alanazi, Mohammad; Altwaijry, Hesham; AlFaraj, Mohammad; Alkhamis, Ali A.; Al‐Madi, Ebtissam M.

doi:10.1016/j.joen.2019.06.011

Cited by 35 publications

(28 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although EndoArt Wise Blue and RPC files failed after a longer time than WOG files did, the difference was statistically insignificant. These findings are corroborated by previous studies [24][25][26][27][28][29] . As RPC does, the RPC Blue file system has an S-shaped transverse cross-section and 2 cutting edges and it is more resistant than RPC file 30 .…”

Section: Discussionsupporting

confidence: 92%

Comparison of cyclic fatigue resistance of heat-treated nickel-titanium reciprocating instruments at the intracanal temperature

Keskin

Güneç

2021

Balkan J Dent Med

View full text Add to dashboard Cite

Summary Background/Aim: The aim of the present study was to compare the cyclic fatigue resistance of NiTi files running with reciprocal motion and having different characteristics (RPC Blue, WOG, EndoArt Wise Reciproc Gold, EndoArt Wise Reciproc Blue) at the intracanal temperature (35°C) by using NaOCl irrigation solution. Material and Methods: Totally 60 WaveOne GOLD (Dentsply-Sirona, Ballaigues, Switzerland), Reciproc Blue (VDW, Munich, Germany), EndoArt Wise Reciproc Gold, and EndoArt Wise Blue (Inci Dental Productions Co, Istanbul, Turkey) (n= 15) files were used. Each of the rotary files were tested at the intracanal temperature (35°C) using a dynamic model in a stainless-steel artificial canal with an inner diameter of 1.5 mm, 60° angle of curvature, and 2mm radius of curvature until fracture occurred. The device automatically stopped at the moment of fracture and the number of cycles to the fracture was calculated as per second. The lengths of fractured parts were measured using a digital microcaliper. The One-Way Analysis of Variance (ANOVA) and Tukey’s post-hoc tests were used for intergroup comparisons. Results: In 2 mm Radius of curvature, the EndoArt Wise Reciproc Blue group had a significantly higher time to fracture followed by the EndoArt Wise Reciproc Gold, Resiproc Blue, WaveOne Gold. No significant difference was found between EndoArt Wise Reciproc Gold and Resiproc Blue groups (P>0.05). Among the groups, there was no statistically significant difference in the lengths of fractured parts of the instruments (P> 0.05). Conclusions: EndoArt Wise Reciproc Blue files exhibited significantly higher cyclic fatigue resistance compared with other files tested in a 2-mm radius of curvature and a 60° angle in an artificial canal at the intracanal temperature.

show abstract

Section: Discussionsupporting

confidence: 92%

Comparison of cyclic fatigue resistance of heat-treated nickel-titanium reciprocating instruments at the intracanal temperature

Keskin

Güneç

2021

Balkan J Dent Med

View full text Add to dashboard Cite

show abstract

“…5), which corroborate with previous reports (Al‐Obaida et al . 2019). Interestingly, despite the high martensitic composition of the One Files Blues compared to Reciproc Blue instrument, the latter had significant more flexibility than the former.…”

Section: Discussionmentioning

confidence: 99%

Design, metallurgical features, mechanical performance and canal preparation of six reciprocating instruments

et al. 2021

View full text Add to dashboard Cite

Aim To compare six reciprocating instruments regarding their geometric design, metallurgical characteristics, mechanical behaviour and ability to prepare root canals. Methodology A total of 246 new 25‐mm NiTi instruments (41 per group) from six reciprocating systems (Reciproc, Reciproc Blue, One Files, One Files Blue, Reverso Silver, and WaveOne Gold) were evaluated throughout a multimethod approach regarding their design using stereomicroscopy (number of blades and helix angle) and scanning electron microscopy (blades symmetry, cross section and surface finishing), nickel‐titanium composition, phase transformation temperatures, mechanical performance (cyclic fatigue, torsional and bending resistance) and unprepared canal surface area on anatomically matched mandibular molars assessed by micro‐CT. One‐way ANOVA and post hoc Tukey’s or Mood's median tests were selected depending on sample distribution with significance level set at 5%. Results The instruments had similarities regarding their metal composition and unprepared canal area, whilst differences in phase transformation temperatures and geometric design (number of blades, surface finishing and tip geometry) were observed. Overall, no difference was observed regarding the maximum torque values (P > 0.05), whilst One Files (72 s) and One Files Blue (414 s) had the shortest and longest times to fracture, respectively (P < 0.05). Similar angles of rotation were observed in Reciproc (310°), One Files (285°) and Reverso Silver (318°) instruments (P > 0.05), which were significantly lower than Reciproc Blue (492°), One Files Blue (456°) and WaveOne Gold (492°; P < 0.05). Maximum bending load demonstrated that Reciproc Blue (201.3 gf) was significantly more flexible that the other instruments (P < 0.05). Conclusion Although there were similarities in metal composition and percentage of unprepared canal surface, the instruments had differences in the overall geometric design, phase transformation temperatures and in the four mechanical resistance parameters (time to fracture, maximum torque, angle of rotation and maximum bending load).

show abstract

“…A glass cover on top of St-St block is used to allow visualization of rotating instrument while preserving an accurate repeatable trajectory as glass has higher wear resistance than Ni-Ti files. As the canal curvature and angle can affect the cyclic fatigue resistance of rotary files (2,3) . The parameter of the simulated canal used in the present study drown by using the Pruett method to increase the similarity of all files trajectory inside it.…”

Section: Discussionmentioning

confidence: 99%

The effect of autoclave sterilization on Cyclic fatigue ‎resistance of two Ni-Ti systems (an In-Vitro study)‎

Fiad

Faramawy²,

Fahmy

2021

Egyptian Dental Journal

View full text Add to dashboard Cite

The aim of this study was to evaluate the effect of sterilization on the cyclic fatigue resistance of Reciproc Blue rotary files and One Curve rotary files.Methods: For each test of the cyclic fatigue thirty files of each system were used. Ten of the thirty rotary files were used new, ten rotary files after three sterilization cycles and ten rotary files after six sterilization cycles. For cyclic fatigue testing a static model was used with a specific device, which allowed the instruments to rotate freely inside a Stainless-Steel artificial canal.Results: The results showed higher cyclic fatigue of Reciproc Blue than One Curve with no effect of sterilization on Reciproc Blue and decreeing in the cyclic fatigue resistance for One Curve. Conclusions: Reciproc Blue has higher cyclic fatigue resistance than One Curve. With no effect of sterilization on cyclic fatigue of some files while have negative effect on others.

show abstract

Comparison of Cyclic Fatigue Resistance of 5 Heat-treated Nickel-titanium Reciprocating Systems in Canals with Single and Double Curvatures

Cited by 35 publications

References 25 publications

Comparison of cyclic fatigue resistance of heat-treated nickel-titanium reciprocating instruments at the intracanal temperature

Comparison of cyclic fatigue resistance of heat-treated nickel-titanium reciprocating instruments at the intracanal temperature

Design, metallurgical features, mechanical performance and canal preparation of six reciprocating instruments

The effect of autoclave sterilization on Cyclic fatigue ‎resistance of two Ni-Ti systems (an In-Vitro study)‎

Contact Info

Product

Resources

About