Dina A El Refai

Department of Biomaterials, Ain- Shams University, Organization of African unity St, El-Qobba Bridge, Al Waili, Cairo Governorate, Egypt


  • Research   
    Head and Neck Cancer Radiotherapy Effect on Some Properties of Different Dental Restorative Materials: An in Vitro Study
    Author(s): Sara said Eltohamy*, Mohamed M Kandil and Dina A El Refai

    Aim: evaluation of the effect of HNC radiotherapy on diametral tensile strength, wear resistance, and color stability of Nanocomposite (Filtek Z-350XT), RMGI (Fuji II LC), Compomer (Composan glass). Methods: A total of 300 specimens were prepared, 100 for each restorative material. 40 specimens from each material will not be exposed to radiation (control group). 30 specimens will be irradiated to 50 Gy and 30 specimens will be irradiated to 70 Gy. Diametral tensile strength (DTS), wear resistance, and color stability tests were measured for each group (n=10). One-way ANOVA was used to explore significance between groups followed by Tukey’s post hoc test. Independent t-test was carried to compare the color change of 50 Gy and 70 Gy groups. Results: Reduction in DTS, and wear resistance was observed in the thre.. Read More»

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