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Effect of two different surface treatments on bond strength between zirconium-oxide ceramic and resin cement / Bassam Milad Eloud ; Supervised Ashraf Omar Elkaraksy , Lamiaa Nabil Sherif Samaha

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Cairo : Bassam Milad Eloud , 2014Description: 66 Leaves : facsimiles ; 30cmOther title:
  • تأثير طريقتين مختلفتين لمعالجة السطح على قوة الربط بين الزركونيا و الأسمنت الراتنجى [Added title page title]
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  • Issued also as CD
Dissertation note: Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics Summary: Aim of the study: The aim of the present study was to evaluate the effect of two different surface treatments (CO2 laser and silica coating) on bond strength between Y-TZP zirconia and Rely-X Unicem adhesive resin cement. Materials and Methods: A total of 30 zirconium oxide discs were produced to act as 15 twin samples. The samples were divided into three groups according to type of surface treatment used as follows: (1) Laser irradiation by CO2 laser, (2) Silica coating, (3) sandblasting. Each two similarly treated samples were cemented together by using Rely-x Unicem resin cement, in order to obtain five twin samples in each group. All the samples were subjected to thermocycling for 6000 cycles between 5 and 55Co. The shear bond strength of luting cement to ceramics was measured in a universal testing machine. Results: The results showed that Sandblasting group showed the statistically significantly highest mean shear bond strength. There was no statistically significant difference between CO2 Laser and cojet groups; both showed the statistically significantly lowest mean shear bond strength values.
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Thesis Thesis قاعة الرسائل الجامعية - الدور الاول المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.09.M.Sc.2014.Ba.E (Browse shelf(Opens below)) Not for loan 01010110065391000
CD - Rom CD - Rom مخـــزن الرســائل الجـــامعية - البدروم المكتبة المركزبة الجديدة - جامعة القاهرة Cai01.09.09.M.Sc.2014.Ba.E (Browse shelf(Opens below)) 65391.CD Not for loan 01020110065391000

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

Aim of the study: The aim of the present study was to evaluate the effect of two different surface treatments (CO2 laser and silica coating) on bond strength between Y-TZP zirconia and Rely-X Unicem adhesive resin cement. Materials and Methods: A total of 30 zirconium oxide discs were produced to act as 15 twin samples. The samples were divided into three groups according to type of surface treatment used as follows: (1) Laser irradiation by CO2 laser, (2) Silica coating, (3) sandblasting. Each two similarly treated samples were cemented together by using Rely-x Unicem resin cement, in order to obtain five twin samples in each group. All the samples were subjected to thermocycling for 6000 cycles between 5 and 55Co. The shear bond strength of luting cement to ceramics was measured in a universal testing machine. Results: The results showed that Sandblasting group showed the statistically significantly highest mean shear bond strength. There was no statistically significant difference between CO2 Laser and cojet groups; both showed the statistically significantly lowest mean shear bond strength values.

Issued also as CD

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