Nagy, A., El-Mahallawy, O., Ghanem, L. (2021). Bioactive Cement versus Resin Cement Regarding the Perceived Shade of E-Max Restorations (An In Vitro Study). Journal of Fundamental and Clinical Research, 1(2), 69-79. doi: 10.21608/jfcr.2021.211099
Amira Gehad Nagy; Omaima El-Mahallawy; Lomaya Ghanem. "Bioactive Cement versus Resin Cement Regarding the Perceived Shade of E-Max Restorations (An In Vitro Study)". Journal of Fundamental and Clinical Research, 1, 2, 2021, 69-79. doi: 10.21608/jfcr.2021.211099
Nagy, A., El-Mahallawy, O., Ghanem, L. (2021). 'Bioactive Cement versus Resin Cement Regarding the Perceived Shade of E-Max Restorations (An In Vitro Study)', Journal of Fundamental and Clinical Research, 1(2), pp. 69-79. doi: 10.21608/jfcr.2021.211099
Nagy, A., El-Mahallawy, O., Ghanem, L. Bioactive Cement versus Resin Cement Regarding the Perceived Shade of E-Max Restorations (An In Vitro Study). Journal of Fundamental and Clinical Research, 2021; 1(2): 69-79. doi: 10.21608/jfcr.2021.211099
Bioactive Cement versus Resin Cement Regarding the Perceived Shade of E-Max Restorations (An In Vitro Study)
1fixed prosthodontics, Faculty of oral and dental medicine, misr international university, egypt
2Fixed Prosthodontics Department, Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt.
3Fixed Prosthodontics Department, Faculty of Oral and Dental Medicine, Misr International University, Cairo, Egypt
Abstract
Background: Perceived shade change of ceramic restorations can be disappointing to both operator and patient; therefore evaluation of how the underlying cement can impact the final perceived shade is required. Aim: Compare effect of bioactive cement versus resin cement on the perceived shade of final ceramic restoration with and without presence of substrate. Methodology: Forty plate shaped samples of lithium disilicate ceramic were prepared (E-max CAD (HT A1/C14 – 1.3 mm thick). Composite substructure of shade A3.5 and 2mm thickness were prepared (n=20). E-max Samples were divided to four groups named (B, R, BC, and RC) (n=10). Groups (B, R) received cement only; (B) for bioactive cement (ACTIVA), (R) for resin cement (Rely X unicem) respectively, both cements were selected of the same shade (A2) as a universal shade. Groups (BC, and RC) were cemented to composite substructure. Shade of E-max Ceramic Specimens was evaluated using spectrophotometer to obtain L*, a*, b* values after etching only, after etching and cement application only, then after cementing to substrate respectively. The generated data was statistically analyzed. The significance level was set at P ≤ 0.05. Results: there was no significant difference between Activa and Rely X without substrate, while with substrate; Activa showed statistically significantly higher mean ΔE than Rely X. Conclusion: The type of luting agent had a great influence on the perceived shade of the lithium disilicate ceramic.
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