Fracture resistance of root canal treated teeth restored with different types of fiber reinforced resin composite restorations: An in-vitro study | ||||
| Egyptian Dental Journal | ||||
| Article 1, Volume 69, Issue 2 - Serial Number 5, April 2023, Page 1545-1554 PDF (603.19 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/edj.2023.179332.2370 | ||||
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| Authors | ||||
Nermin Mahmoud   1; Hyeon Kim 2; Mohammed Turky 3
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| 1Lecturer of Conservative Dentistry Conservative Dentistry Department Faculty of Dentistry Minia University | ||||
| 2Professor, Department of Conservative Dentistry, Pusan National University School of Dentistry, Dental Research In-stitute, Yangsan 50612, Korea | ||||
| 3Lecturer, Department of Endodontics, Faculty of Dentistry, Minia University, 61511 Minia, Egypt | ||||
| Abstract | ||||
| Abstract: Aim: This study aimed to compare the fracture resistance of root canal treated (RCT) teeth restored with different types of resin composite restorations. Methods: A total of 40 freshly extracted human intact mature permanent maxillary premolars were selected and randomly assigned into 4 groups (n = 10 each); the EXF group in which teeth were RCT and restored with a fiber-reinforced bulk-fill flowable composite (Ever-X flow) and covered with a nanofilled resin composite (Filtek Z 350), the RBF group in which teeth restored with polyethelene fibers (Ribbond) with a bulk-fill flowable composite (Filtek bulk-fill flow) covered with the same nanofilled composite, the FBF group in which teeth restored with a bulk-fill flowable composite without fiber reinforcement (Filtek bulk-fill flow) also covered with the same nanofilled composite and the control group in which teeth remained intact without any preparation. All teeth were subjected to a thermo-mechanical cycling after which a static fracture test was performed using the universal testing machine to record the load at failure. Results: The significantly higher mean value of fracture resistance was recorded in the control group than other experimental groups (P < .05). The EXF group showed the highest and followed by RBF group, and the lowest mean value was found in FBF group (P < .05). Conclusion: Within the limitation of the present study, either short fiber-reinforced composite and polyethylene fiber-reinforced composite may have superior resistance to fracture and could reinforce RCT teeth compared to nanofilled composite without fiber reinforcement. | ||||
| Keywords | ||||
| fiber reinforced; resin composite; root canal treated teeth; fracture resistance | ||||
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