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003 EG-GiCUC
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040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.09.09.M.Sc.2021.Ma.F
100 0 _aMahmoud Showky Mohammed Ahmed
245 1 0 _aFracture resistance under cyclic loading of lithium disilicate vonlays versus rosetta vonlays restoring premolars :
_bIn vitro study /
_cMahmoud Showky Mohammed Ahmed ; Supervised Rasha Nabil Sami , Noha Adel Elkhodary
246 1 5 _aمقاومة الكسر للقشور السطحية الخزفيةالمرممة للضواحك تحت تحميل دورى والمصنعة من الليثيوم ديسليكات مقابل القشور السطحية الخزفية المصنعة من الروزيتا :
_bدراسة معملية
260 _aCairo :
_bMahmoud Showky Mohammed Ahmed ,
_c2021
300 _a106 P. :
_bcharts , facsimiles ;
_c25cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics
520 _aAim: The aim of thiscurrent study was to compare the fracture resistance under cyclic loading of lithium disilicate (IPS e.max CAD) vonlays versus (Rosetta®SM CAD)vonlays restoring premolars. Methodology: A natural maxillary premolar tooth was prepared according to regular dimensions of all ceramic restorations preparation guidelines, the prepared naturalpremolar tooth was then duplicated into twenty epoxy resin dies, each die was scanned by Medit i500 scanner extra oral scanner and then milled by Sirona MCX5 milling machine usingIPS e.max CAD blocks and Rosetta®SM CADblocks. A total sample size of 20 will be selected then divided into two equal groups 10 sample each according to the material type used, group (A)ten vonlay samples (n=10) fabricated ofIPS e.max CAD blocks, group (B) ten vonlays samples (n=10) fabricated of Rosetta®SM CAD /CAM blocks. Load to fracture was tested. Result: IPS e.max CAD group recorded statistically non-significant higher fracture resistance mean value (502.39 ±102.89 N) than Rosettagroup (468.76 ± 67.54 N) as described by unpaired t-test (P=0.5006 > 0.05
530 _aIssued also as CD
653 4 _aFracture strength
653 4 _aOnlay
653 4 _aVeneer
700 0 _aNoha Adel Elkhodary ,
_eSupervisor
700 0 _aRasha Nabil Sami ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aShimaa
_eCataloger
942 _2ddc
_cTH
999 _c82194
_d82194