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003			EG-GiCUC
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008			220901s2021 ua dho f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.09.09.M.Sc.2021.Sa.A
100	0		_aSamar Fathy Fathy Elshihy
245	1	0	_aAssessment Of Surface Roughness And Color Stability Of Glazed Versus Polished Pressed Zirconia Reinforced Lithium Silicate Restorations Under Different Ph Oral Media : _bAn In-Vitro Study / _cSamar Fathy Fathy Elshihy ; Supervised Gihan Abdelhady Elnaggar , Reham Saeed Elbasty
246	1	5	_aدراسة خارج الجسم الحي : _bتقييم خشونة السطح و ثبات اللون للتعويضات المزججة مقابل الملمّعة لمادة زجاج سيليكات الليثيوم المعزز بالزيركزونيا في أوساط ذات أرقام هيدروجينية مختلفة
260			_aCairo : _bSamar Fathy Fathy Elshihy , _c2021
300			_a110 P . : _bcharts , facsimiles , photographes ;
502			_aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of rosthodontics
520			_aThe aim of this in-vitro study was to assess the effect of the surface finish protocol of pressed zirconia reinforced lithium silicate ceramics on the surface roughness & color stability under different pH oral media. Methodology: thirty surfaces (n=30) of pressed zirconia reinforced lithium silicate samples were tested, samples were fabricated and divided into two main groups (n=15) according to surface finish protocol; glazed group and polished group. Then, The samples of each group were further subdivided into three subgroups according to the media tested (n=5): Artificial saliva, coffee, carbonated orange juice. A cylinder of 10 mm diameter and 6.5 mm thickness was designed using Exocad software. five cylinders were milled from Cad wax blank, then the cylinders were invested for wax burnout procedure. afterwards, pressing of zirconia reinforced lithium silicate ingots were made. Each ceramic cylinder was cut into three discs with 1.5 mm thickness using isomet 4000. All the discs were finished with fine grit diamond stone on both sides according to manufacturer instructions, a marginal notch with a diamond stone was made on the side that will receive polishing to be able to differentiate between the polished and the glazed sides. Then, discs were glazed on one side and polished on the other side resulting in 15 glazed and 15 polished surfaces
530			_aIssued also as CD
650		0	_aph
700	0		_aGihan Abdelhady Elnaggar , _eSupervisor
700	0		_aReham Saeed Elbasty , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aAmira _eCataloger
905			_eRevisor
942			_2ddc _cTH
999			_c84774 _d84774