000			02906nam a22002297a 4500
999			_c59376 _d59376
008			180910s2016 ua ||||g b|| 00| 0 eng d
040			_cSOUL
041			_aara _heng
082	4	0	_221 _a617.634 _bE E
100		1	_94629 _aElghazaly , Amira Safwat Amin
245	0	1	_aصور الفوتوغرافيا بصحافة المواطنة والصور الصحفية التقليدية بمصر : _bEVALUATION OF TWO SINGLE FILE NITI ROTARY ENDODONTIC SYSTEMS : _cAmira Safwat Amin Elghazaly ; Hossam Mohamed Essam Eldeen Tawfik , Yousra Mohamed Nashaat .
246	1	3	_aEVALUATION OF TWO SINGLE FILE NITI ROTARY ENDODONTIC SYSTEMS :
260			_aالقاهرة : _bAin Shams University . Faculty of Dentistry Endodontics _c2017
300			_a(متعدد الترقيم) : _c25 سم. _bإيض. ؛
500			_aThesis (D.S) - Ain Shams University . Faculty of Dentistry Endodontics .
504			_aIncludes Bibliographical References .
520			_aOne of the main objectives of the root canal treatment is the shaping and cleaning of the root canal without changing the outline of the root canal from the preoperative shape. Nickel Titanium files are some of tools used in producing proper cleaning and shaping of the root canal. These files have different designs that vary in its shaping and cleaning ability. The purpose of this study is to compare and evaluate the shaping and cleaning ability of two single NiTi systems which were WaveOne and One Shape files. The first part of this study was concerned by the evaluation and comparison of shaping ability of both systems regarding transportation and centering ability using the direct digital radiography and the images superimposition. The second part of this study was concerned by the evaluation and comparison of cleaning efficiency of both systems regarding the amount of debris in the different canal thirds using the stereomicroscopeand the ability to reduce bacterial load. The third part was concerned to study the cyclic fatigue resistance as well as the torsional strength of both tested file systems. The collected data was tabulated, statistically analyzed and illustrated graphically. The results of this investigation revealed that: • Greater percent in the degree of apical transportation was achieved by using One Shape file systems. • WaveOne files showed better centering ability in the canal than the One Shape files. • WaveOne files produced cleaner canal in all canal thirds (apical,middle and coronal levels) regarding to the percent of debris. • Both systems reduced the bacterial load significantly without difference. • WaveOne achieved better cyclic fatigue resistance and torsional strength than One Shape file.
546			_aText in English , summary in English & Arabic .
650		7	_94630 _aQRMK
700			_94631 _aHossam Mohamed Essam Eldeen Tawfik _eSupervisor
942			_2ddc _cTHE _iFOAM _6FOAM