000			02150cam a2200325 a 4500
003			EG-GiCUC
008			141222s2012 ua dho f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.09.02.M.Sc.2012.Ga.E
100	0		_aGamal Hany Mohamed Ezz Eldin Elnazer
245	1	0	_aEvaluation of surface topography of two nickel- titanium rotary endodontic files pre-and post instrumentation : _bAn invitro study / _cGamal Hany Mohamed Ezz Eldin Elnazer ; Supervised Medhat Abdelrahman Kataia , Mohamed Hussein Zaazou , Amal Esawi
246	1	5	_aدراسة معملية لتقييم الطوبوغرافيا السطح لاثنين من مبارد النيكل تيتانيوم قبل و بعد التحضير
260			_aCairo : _bGamal Hany Mohamed Ezz Eldin Elnazer , _c2012
300			_a128 Leaves : _bcharts , facsimiles , photographs ; _c30cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Endodontics
520			_aThe 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
530			_aIssued also as CD
653		4	_aNickel titanium files
653		4	_aRotary files
653		4	_aSurface topography
700	0		_aAmal Esawi , _eSupervisor
700	0		_aMedhat Abdelrahman Kataia , _eSupervisor
700	0		_aMohamed Hussein Zaazou , _eSupervisor
905			_aNazla _eRevisor
905			_aSamia _eCataloger
942			_2ddc _cTH
999			_c48881 _d48881