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| 003 | EG-GiCUC | ||
| 005 | 20250223032902.0 | ||
| 008 | 211220s2021 ua dh f m 000 0 eng d | ||
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_aEG-GiCUC _beng _cEG-GiCUC |
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| 041 | 0 | _aeng | |
| 049 | _aDeposite | ||
| 097 | _aM.Sc | ||
| 099 | _aCai01.09.09.M.Sc.2021.Ba.F | ||
| 100 | 0 | _aBasma Osama Abbas Ghonim | |
| 245 | 1 | 0 |
_aFracture resistance of pressed zirconia reinforced lithium silicate crowns versus pressed lithium disilicate crowns under thermo- mechanical cycling : _bAn in vitro study / _cBasma Osama Abbas Ghonim ; Supervised Gihan Abdelhady Elnagar, Dina Magdy Elshehawi |
| 246 | 1 | 5 |
_aمقاومة الكسر للتيجان المصنوعة من الليثيوم سليكات المقوي بالزركونيا المضغوط مقابل التيجان المصنوعة من الليثيوم دايسليكات المضغوط عند تعرضهم للضغط الحرارى الدورى : _bدراسة معملية |
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_aCairo : _bBasma Osama Abbas Ghonim , _c2021 |
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_a109 P. : _bcharts , facsimiles ; _c25cm |
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| 502 | _aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics | ||
| 520 | _aAim: The present study was conducted to assess the fracture resistance of zirconia reinforced lithium silicate all ceramic material 2Celtra Press3 compared to lithium disilicate one 2IPS e-max Press3 under simulated oral conditions (thermal cycling and cyclic loading). Methodology : Fourteen ceramic crowns were fabricated on epoxy dies which were duplicated from stainless steel master die and divided into two equal groups (n=7) according to the material of construction; Group A: Crowns fabricated with IPS e-max Press material and Group B: Crowns fabricated with Celtra Press material.The crowns were then cemented onto their corresponding dies using with a self-adhesive resin cement (Calibra Universal) and subjected to thermocycling and cyclic loading to simulate the clinical conditions.Then they were loaded to fractur in a universal testing machine.The results were tabulated and statistically analyzed using Kolmogorov-Smirnov and Shapiro-Wilk tests. Student t-test used to compare mean values.The significance level was set at P{u2264} 0.05 and 95% Confidence interval. Statistical analysis was performed using Graph Pad Instat (Graph Pad, Inc.) software for windows Results: The mean ± SD values of fracture resistance were recorded for lithium Disilicate group (1706.01 ±154.32 N) meanwhile the mean ± SD value recorded with celtra group were (1550.67±196.71 N). It was found that e.max group recorded statistically non-significant higher fracture resistance mean value than celtra group as indicated by t-test (t=1.5, P=0.1590 > 0.05) | ||
| 530 | _aIssued also as CD | ||
| 653 | 4 | _aLithium disilicate | |
| 653 | 4 | _aThermal cycling | |
| 653 | 4 | _aZirconia reinforced lithium silicate | |
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_aDina Magdy Elshehawi , _eSupervisor |
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_aGihan Abdelhady Elnagar , _eSupervisor |
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| 856 | _uhttp://172.23.153.220/th.pdf | ||
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_aNazla _eRevisor |
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_aShimaa _eCataloger |
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_2ddc _cTH |
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_c83623 _d83623 |
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