Structural integrity of extracted teeth restored using three different post-and-core systems: An in vitro comparative study
Aim: The objective of the study was to assess the in vitro fracture resistance of endodontically treated teeth restored using different post-and-core materials. Materials and methods: Extracted human mandibular premolars (n = 36) were extracted teeth and equally distributed into four (4) treatment g...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2021-02-01
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| Series: | Saudi Dental Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905219307680 |
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| Summary: | Aim: The objective of the study was to assess the in vitro fracture resistance of endodontically treated teeth restored using different post-and-core materials. Materials and methods: Extracted human mandibular premolars (n = 36) were extracted teeth and equally distributed into four (4) treatment groups: cast metal post-and-core, milled zirconia post-and-core, pre-fabricated post with composite resin core and control group. These samples were then each subjected to the load to fracture test using a universal testing machine. Fracture resistance data were compared among groups by analysis of variance and Fisher’s exact test. Results: The highest mean fracture resistance value was observed in the zirconia post-and-core treatment group (1567.26 ± 317.66 N), followed by the cast metal (1355.92 ± 621.56 N) and lastly the pre-fabricated post with composite resin core (725.67 ± 251.05 N) treatment group. Differences among groups were not statistically significantly different (P = 3.77). Conclusion: Endodontically treated mandibular premolars with a zirconia post-and-core system exhibited the highest robustness against structural failure based on its mean fracture resistance value. In addition, extracted teeth restored with cast post-and-core resisted a greater stress load than those restored with fiber-reinforced posts. Zirconia showed a more favorable fracture mode than the other restorations. |
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| ISSN: | 1013-9052 |