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Reliability of shade matching of two different zirconia based materials and techniques / Firas Fares Alshikfeh ; Supervised Ahmed Hassanien Khalil , Carl Hany Halim

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Firas Fares Alshikfeh , 2013Description: 102 Leaves : charts , facsimiles ; 30cmOther title:
  • توثيق تطابق اللون باختلاف مواد قاعدية الزركونيا وطرق تصنيعها [Added title page title]
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Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics Summary: Aim of study: The aim of this study was to assess the accuracy of shade matching and degree of translucency of two different zirconia based materials and techniques. Materials and methods: Prettau Zirkon, Ice Zirconia Translucent and Ice Zirconia Ceramic were used in this study, Samples were divided according to type of zirconia into two groups of 10 samples each: Group A: Prettau zirconia, Group B : Conventional layering technique. Each group was subdivided into two sub-groups of 5 samples each according to the shade (A1, A3). Twenty zirconia ceramic discs were constructed from prefabricated zirconia ceramic blocks using the Zirkonzahn CAD/CAM system. Fabrication of Group A discs: Zirconia Prettau discs of 1.5 mm thickness and 11 mm in diameter. Group B discs: Conventionally veneered zirconia discs made of 1.5 mm thickness (0.5 core zirconia and covered by 1 mm porcelain) and 11 mm in diameter. All samples were subjected to color measurements using a spectrophotometer. Results: The results showed that ceramic type, shade and the interaction between the two variables had a statistically significant effect on mean translucency. Conclusion: Prettau as a full contoured zirconia restoration can be used in both anterior and posterior teeth as it showed higher translucency and closer shade matching values than the veneered conventional zirconia
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.09.M.Sc.2013.Fi.R (Browse shelf(Opens below)) Not for loan 01010110064816000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.09.M.Sc.2013.Fi.R (Browse shelf(Opens below)) 64816.CD Not for loan 01020110064816000

Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics

Aim of study: The aim of this study was to assess the accuracy of shade matching and degree of translucency of two different zirconia based materials and techniques. Materials and methods: Prettau Zirkon, Ice Zirconia Translucent and Ice Zirconia Ceramic were used in this study, Samples were divided according to type of zirconia into two groups of 10 samples each: Group A: Prettau zirconia, Group B : Conventional layering technique. Each group was subdivided into two sub-groups of 5 samples each according to the shade (A1, A3). Twenty zirconia ceramic discs were constructed from prefabricated zirconia ceramic blocks using the Zirkonzahn CAD/CAM system. Fabrication of Group A discs: Zirconia Prettau discs of 1.5 mm thickness and 11 mm in diameter. Group B discs: Conventionally veneered zirconia discs made of 1.5 mm thickness (0.5 core zirconia and covered by 1 mm porcelain) and 11 mm in diameter. All samples were subjected to color measurements using a spectrophotometer. Results: The results showed that ceramic type, shade and the interaction between the two variables had a statistically significant effect on mean translucency. Conclusion: Prettau as a full contoured zirconia restoration can be used in both anterior and posterior teeth as it showed higher translucency and closer shade matching values than the veneered conventional zirconia

Issued also as CD

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