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 | ||||
| Article 2, Volume 23, Issue 2, April 2020, Page 95-102 PDF (589.59 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ajdsm.2020.29989.1060 | ||||
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| Author | ||||
mohamed salah el din mohamed 
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| Crown and Bridge Department, Faculty of Dental Medicine (Cairo-Boys), Al-Azhar University | ||||
| Abstract | ||||
| 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.. | ||||
| Keywords | ||||
| CAD /CAM; endocrown; onlay; endodontically treated molar | ||||
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