000			03022cam a2200313 a 4500
003			EG-GiCUC
008			170610s2016 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.2016.An.I
100	0		_aAnas Mohamed Mando
245	1	0	_aIn vitro evaluation of manual and rotary NiTi retreatment systems in removing gutta-Percha obturated with root canal sealers / _cAnas Mohamed Mando ; Supervised Saeed M. Abdelaziz , Geraldine M. Ahmed
246	1	5	_aدراسة فى المختبر لتقيم الأدوات اليدوية و أدوات ماكينة الدوران فى إزالة حشو الجوتا بيرشا مع السمنتات ألاحمة للقناة الجذرية
260			_aCairo : _bAnas Mohamed Mando , _c2016
300			_a82 P. : _bcharts , facsimiles , photographs ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Endodontics
520			_aObjective: This study aimed to compare the efficacy of Manual technique (gates-glidden and hedstrom files), protaper universal rotary retreatment system and R-Endo retreatment system in removing gutta-percha with different canals sealer, zinc oxide eugenol and AH plus sealer. Materials and Method: Ninety-six extracted human roots were instrumented by ProTaper rotary files to (F3) and the samples were randomly divided into six groups of 16 roots for each groups A, B and C: gutta-percha and AH plus sealer, groups D, E and F: gutta-percha and endoseal. Removal of gutta-percha was performed the following techniques; (group A and D) ProTaper retreatment instruments, (group B and E) R-Endo instruments and (group C and F) gates-glidden with hedstrom files. The roots were split longitudinally. The area of remaining filling was evaluated by using stereomicroscope at three levels in the canal and time of retreatment was determined in each group. Results: No system completely removed the root filling material from root canal walls. No significant differences were observed between the rotary systems in terms of the area of filling material left within the canals (P>0.05). In case of middle third of the canal, groups reinstrumented by manual technique (C and F) showed significant when compared to groups (reinstrumented with protaper retreatment files (A and D). Conclusion: No system removed the root filling materials entirely. ProTaper files and R-endo were more efficient and faster than gates-glidden drills with H-files in root canal filling removal. Epoxy resin based sealer, was generally more difficult to remove than zinc-oxide and eugenol based sealer
530			_aIssued also as CD
653		4	_aAH Plus
653		4	_aGutta-percha
653		4	_aRoot canal retreatment
700	0		_aGer Aldine Mohamed Ahmed , _eSupervisor
700	0		_aSaeed Mohamed Abdelaziz , _eSupervisor
905			_aNazla _eRevisor
905			_aSamia _eCataloger
942			_2ddc _cTH
999			_c61135 _d61135