Effect of Dynamic Immersion in Sodium Hypochlorite and EDTA Solutions on Cyclic Fatigue Resistance of WaveOne and WaveOne Gold Reciprocating Nickel-titanium Files

Uslu G., Ozyurek T., Yilmaz K., Plotino G.

JOURNAL OF ENDODONTICS, vol.44, no.5, pp.834-837, 2018 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 5
  • Publication Date: 2018
  • Doi Number: 10.1016/j.joen.2017.11.014
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.834-837
  • Keywords: Cyclic fatigue resistance, irrigating solution, static model, WaveOne, WaveOne Gold, ATOMIC-FORCE MICROSCOPY, ROTARY INSTRUMENTS, ENDODONTIC INSTRUMENTS, PROTAPER GOLD, CORROSION, THERAPY, TORQUE
  • Ondokuz Mayıs University Affiliated: Yes


Introduction: The purpose of this study was to evaluate the effect of sodium hypochlorite (NaOCl) and EDTA solutions on the cyclic fatigue resistance of WaveOne (WO) and WaveOne Gold (WOG) nickel-titanium reciprocating files. Methods: A hundred WO (25/.08), and 100 WOG (25/.07) were randomly divided into 5 groups: group 1, no immersion; group 2, immersion in 5.25% NaOCI at 37 degrees C +/- 1 degrees C for 5 minutes; group 3, immersion in 5.25% NaOCI at 37 degrees C +/- 1 degrees C for 10 minutes; group 4, immersion in 17% EDTA at 37 degrees C +/- 1 degrees C for 5 minutes; and group 5, immersion in 17 % EDTA at 37 degrees C +/- 1 degrees C for 10 minutes. Then, the instruments were reciprocated in an artificial canal until fracture occurred, and the time to fracture was recorded. The data were statistically analyzed using 1-way analysis of variance and the Student t test via SPSS 21.0 software (IBM Corp, Armonk, NY) with the significance level set at P < .05. Results: The cyclic fatigue resistance of the WOG was statistically higher than the WO in all the conditions tested (P < .05). There was no statistically significant difference among the different conditions tested in terms of cyclic fatigue resistance for both WO and WOG files (P > .05). Among the groups, there was no significant difference in the fracture lengths (P > .05). Conclusions: Within the limitations of the present study, it was determined that NaOCl and EDTA solutions did not have any effect on the cyclic fatigue resistance of WO and WOG files.