TY  - BOOK
AU  - Ahmed Khalid Mohamed Elhag
AU  - Abeer Ahmed Elsabaa , 
AU  - Nihal Ezzat Sabit , 
TI  - Effect of instrumentation on the cyclic fatigue of two Nickel-Titanium rotary instruments / 
PY  - 2013///
CY  - Cairo : 
PB  - Ahmed Khalid Mohamed Elhag , 
KW  - Cyclic fatigue
KW  - Files fracture
KW  - Rotary files
N1  - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine Department of Endodontics; Issued also as CD
N2  - The present study was conducted to compare the resistance to cyclic fatigue of two Nickel-Titanium rotary instry instruments; Twisted files (SybronEndo) and RaCe (FKG Dentaire) before and after being used in 4 and 12 canals. Methodology: Sixty Nickel-Titanium endodontic files were tested for cyclic fatigue. These instruments consisted of two main groups; Twisted, and RaCe files, in which both represented equilateral triangular cross section
ER  -