TY  - BOOK
AU  - Gamal Hany Mohamed Ezz Eldin Elnazer
AU  - Amal Esawi , 
AU  - Medhat Abdelrahman Kataia , 
AU  - Mohamed Hussein Zaazou , 
TI  - Evaluation of surface topography of two nickel-  titanium rotary endodontic files pre-and post instrumentation : : An invitro study / 
PY  - 2012///
CY  - Cairo : 
PB  - Gamal Hany Mohamed Ezz Eldin Elnazer , 
KW  - Nickel titanium files
KW  - Rotary files
KW  - Surface topography
N1  - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Endodontics; Issued also as CD
N2  - The present study, aimed to evaluate the surface topography of two rotary NiTi file systems: the Protaper Universal System (Dentsply) and the Liberator system (Miltex). And study the effect of repeated use on their surfaces and compare between them. The presence or absence of twelve defects was checked on every millimeter of the file surfaces circumferentially. Inspection of all files was done first under stereomicroscope for detection of macroscopic defects. Then, for detection of microscopic surface defects, Field Emission Scanning Electron Microscope was used with a magnification range between 250x to 2000x.  Scoring the results for surface defects was done by studying the photomicrographs obtained by SEM
ER  -