Material and Methods: twenty-four human mandibular molar were used in this study. A total of twenty-Four samples were randomly divided into two main groups(12 each) . Group Ⅰ : teeth were prepared and restored by endocrown restorations . Group Ⅱ : teeth were prepared and restored by onlay restorations. Each group was divided into two subgroups ; Subgroup 1: restorations were fabricated from IPS E. Max cad . Subgroup 2 : restorations were fabricated from Vita Enamic . The restorations were cemented using dual cure resin cement, then the specimens were subjected to fracture resistance test. Results: Two-way ANOVA test, post hoc Tuckey tests and descriptive statistics were used to compare between different designs and materials . The significance level was set to P ≤ 0,05. The same material with different restorations. Emax , there was no statistically significant difference between endocrown and only as p=0.3 . V . Enamic , there was no statistically significant difference between endocrown and onlay as p=0.95 . The same restoration with different materials . Endo crown, there was statistically significant difference between Emax and v. enamic as p=0.02 . Onlay, there was no statistically significant difference between Emax and v. enamic as p=0.11. Conclusion: Within the limits of this in vitro study, the following can be concluded:(1) Endocrowns and onlays can be used safely in terms of fracture resistance as both have values which exceed the physiologic requirements..
mohamed, M. (2020). Fracture Resistance of Molar Teeth Restored by Endocrown And Onlay CAD/CAM Monolithic Ceramic Materials. An In-vitro Study. Al-Azhar Journal of Dental Science, 23(2), 95-102. doi: 10.21608/ajdsm.2020.29989.1060
MLA
mohamed salah el din mohamed. "Fracture Resistance of Molar Teeth Restored by Endocrown And Onlay CAD/CAM Monolithic Ceramic Materials. An In-vitro Study". Al-Azhar Journal of Dental Science, 23, 2, 2020, 95-102. doi: 10.21608/ajdsm.2020.29989.1060
HARVARD
mohamed, M. (2020). 'Fracture Resistance of Molar Teeth Restored by Endocrown And Onlay CAD/CAM Monolithic Ceramic Materials. An In-vitro Study', Al-Azhar Journal of Dental Science, 23(2), pp. 95-102. doi: 10.21608/ajdsm.2020.29989.1060
VANCOUVER
mohamed, M. Fracture Resistance of Molar Teeth Restored by Endocrown And Onlay CAD/CAM Monolithic Ceramic Materials. An In-vitro Study. Al-Azhar Journal of Dental Science, 2020; 23(2): 95-102. doi: 10.21608/ajdsm.2020.29989.1060