Comparison of cyclic fatigue resistance of novel nickel-titanium rotary instruments

ÇAPAR İ. D., ERTAŞ H., ARSLAN H.

AUSTRALIAN ENDODONTIC JOURNAL, cilt.41, sa.1, ss.24-28, 2015 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 1
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1111/aej.12067
  • Dergi Adı: AUSTRALIAN ENDODONTIC JOURNAL
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.24-28
  • Anahtar Kelimeler: cyclic fatigue, heat treatment, nickel-titanium files, ProTaper Next, rotary, ROOT-CANAL INSTRUMENTS, ENDODONTIC INSTRUMENTS, MECHANICAL-PROPERTIES, CLINICAL-USE, FILES, NITI, WIRE, FRACTURE, DEFECTS, ALLOYS
  • Atatürk Üniversitesi Adresli: Evet

Özet

New files (ProTaper Next/HyFlex/OneShape) are made from novel nickel-titanium (NiTi) alloys/treatments. The purpose of this study was to compare the cyclic fatigue resistance of these new instruments with that of Revo-S instruments. Four groups of 20 NiTi endodontic instruments were tested in steel canals with a 3mm radius and a 60 degrees angle of curvature. The cyclic fatigue of the following NiTi instruments with a tip size 25 and 0.06 taper that were manufactured with different alloys was tested: ProTaper Next X2 (M-Wire), OneShape (conventional NiTi), Revo-S Shaping Universal (conventional NiTi) and HyFlex 25/0.6 (controlled memory NiTi wire). A one-way anova and post-hoc Tukey's test (=0.05) revealed that the HyFlex files had the highest fatigue resistance and the Revo-S had the least fatigue resistance among the groups (P<0.001).