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003 EG-GiCUC
005 20250223031502.0
008 160504s2015 ua o f m 000 0 eng d
040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.09.09.M.Sc.2015.Ab.E
100 0 _aAbdulsattar Hasan Naji Ali Albaadani
245 1 0 _aEvaluation of vertical marginal gap of highly translucent full contour zirconia crowns versus veneered translucent zirconia crowns for precision of fit of zirconia crowns :
_bAn in vitro study /
_cAbdulsattar Hasan Naji Ali Albaadani ; Supervised Rana Mahmoud Sherief , Ashraf Taher Kheir Eldean
246 1 5 _aتقييم الفجوة الرأسية الحافية لتيجان الزركونيا العالى الشفافية الكامل المحيط مقارنة بـتيجان الزركونيا الشفاف المكسو فيما يتعلق بـالتطابق الحافى الدقيق لتيجان الزركونيا :
_bدراسة معملية
260 _aCairo :
_bAbdulsattar Hasan Naji Ali Albaadani ,
_c2015
300 _a104 P. :
_bphotographs ;
_c25cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics
520 _aThe present study evaluated the vertical marginal gap distance of recently introduced monolithichighly translucent zirconia crowns compared to veneered translucent zirconia with two different finish lines (shoulder and deep chamfer). A total of twenty four (n=24) crown samples were constructed frommonolithic highly translucent zirconia (n = 12) and veneered translucent zirconia {u200E}(n = 12) {u200E}using CAD / CAM system on specially designed stainless steel die (8mm cervical diameter, 6mm occluso gingival height and 15-degree total occlusal convergence). The preparation ended with either: 1mm shoulder finish line or 1mm deep chamfer finish line. The crown samples were then divided into two equal groups: Group I: (n = 12) monolithichighly translucent zirconia (zirkonzahn prettau zirconia). Group II: (n = 12) veneered translucent zirconia (zirkonzahn Ice zirconia). Each group was then subdivided into two equal subgroups: Subgroup 1: (n = 6) shoulder finish line. Subgroup 2: (n = 6) deep chamfer finish line. 24 Impressions form the stainless steel dies were made using a cylindrical copper perforated tray, these impressions were then poured into type IV improved dental stone to obtain an exact replica to the stainless steel dies. The stone dies received monolithichighly translucent zirconia crowns (prettau) (n = 12) and veneered translucent zirconia crowns (ICE zirconia) (n = 12), with two different finish line designs (shoulder (n = 6) and chamfer (n = 6)). Veneering of the translucent core was done using the layering technique.And after definitive sintering for both groups, the vertical marginal gap distance of all samples was tested by using a stereomicroscope, and the data were tabulated and statistically analyzed
530 _aIssued also as CD
653 4 _aTranslucent zirconia crowns versus veneered
653 4 _aVertical marginal gap of monolithic highly
653 4 _aZirconia crowns
700 0 _aAshraf Taher Kheir Eldean ,
_eSupervisor
700 0 _aRana Mahmoud Sherief ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aSamia
_eCataloger
942 _2ddc
_cTH
999 _c56264
_d56264