Fracture Resistance of Endodontically Treated Posterior Teeth Restored with Three Different Coronal Restorations An in-vitro study | ||||
| Egyptian Dental Journal | ||||
| Volume 71, Issue 2 - Serial Number 5, April 2025, Page 1767-1775 PDF (817.96 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2025.354351.3350 | ||||
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| Authors | ||||
Nahla Nasr El-deen Fouad   1; Maged Mohamed Negm 2; Dalia Ali Ahmed Moukarab 3; Essam Fawzy Mahmoud 4
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| 1Demonstrator, Department of Endodontics, Faculty of Dentistry, Minia University | ||||
| 2Professor, Department of Endodontics, Faculty of Dentistry, Cairo University | ||||
| 3Assotiate Professor, Department of Endodontics, Faculty of Dentistry, Minia University | ||||
| 4Lecturer, Department of Endodontics, Faculty of Dentistry, Minia University | ||||
| Abstract | ||||
| ABSTRACT: Aim of the study: was to evaluate the fracture resistance of endodontically treated posterior teeth restored with three variable coronal restorations. Methods: Fifty freshly extracted human mandibular molars were randomly allocated into five groups of 10 samples each. Group A served negative control group / n=10; samples were kept untreated .Group B served as positive control group / n=10; samples were endodontically treated and pulp chamber floor was covered with 2mm thick cement layer to represent endodontically treated tooth fracture resistance in absence of coronal restoration . While groups (C, D and E) served as test groups and were restored with Ever X composite direct restoration, IPS e-max endocrown restoration and IPS e- max full coverage restoration respectively. All specimens were tested for fracture resistance, data were tabulated and statistically analyzed. Results: The comprehensive comparison of FR values among all five groups; the one-way ANOVA test revealed a significant difference in fracture resistance among the five groups at p value <0.001. The post-hoc LSD analysis indicated that Group A had the highest fracture resistance, followed by Group D, Group C, Group E, and Group B, with all pairwise comparisons being statistically significant. Conclusion: IPS E-max CAD endocrown and short fiber reinforced composite (Ever X) show significantly higher efficacy in restoring endodontically treated molars and provide higher fracture resistance than the IPS E-max CAD full coverage crowns. | ||||
| Keywords | ||||
| Endodontically treated teeth; Endocrown; Fracture Resistance; Crown | ||||
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