COMPARISON OF FRACTURE TOUGHNESS OF A FIBER REINFORCED COMPOSITE EVERX POSTERIOR AND BULK FILLING COMPOSITES

Nguyễn Thu Thủy

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Abstract

Objectives: To compare the fracture toughness of a fiber reinforced composite everX posterior and bulk filling compositesSDR, Tetric EvoCeram Bulk Fill, SonicFill. Materials and methods: In vitro study on 40 lower third molars, divided into 4 groups as follows: group 1 (10 teeth) everX posterior composite fillings, group 2 (10 teeth) SDR composite fillings, group 3 (10 teeth) SDR composite fillings and group 4 (10 teeth) Tetric EvoCeram Bulk Fillcomposite fillings. Results: The fracture toughness of everX Posterior, SDR, SonicFill, Tetric EvoCeram Bulk Fill composites is 2533.5 ± 438.4 (N), 2495.7 ± 747.7 (N), 2344.0 ± 532.6 (N), 2222.4 ± 387.8 (N).The differences in fracture toughness between 4 groups were not statistically significant. The everX Posterior fiber reinforced composite has the highest favorable fracture pattern rate (40%), followed by SonicFill (20%), SDR and Tetric EvoCeram Bulk Fill with similar rates (10%). The difference in fracture patterns between experimental groups was not statistically significant. Conclusion: Fracture toughness and fracture pattern between fiber reinforced composite everX Posterior and bulk filling composites SDR, Tetric EvoCeram Bulk Fill, SonicFill are no different.

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References

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