Journal of the mechanical behavior of biomedical materials · 2025
Fracture resistance of a short fiber-reinforced flowable resin composite compared with different types of flowable resin composites.
СтатьяСравнительное исследованиеНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Watanabe Shuhei, Takamizawa Toshiki, Muto Rei, Suda Shunichi, Ishii Ryo, Latta Mark A, Barkmeier Wayne W, Miyazaki Masashi
Аннотация
OBJECTIVES: This study aimed to evaluate the fracture resistance of a short fiber-reinforced flowable resin composite and compare it with that of different types of flowable resin composites.
METHODS: A total of 10 commercially available flowable resin composites were used, including a flowable short fiber-reinforced resin composite (SFRC), five bulk-fill flowable resin composites, two injectable resin composites, and two single-shade flowable resin composites. The flexural strength (σF), flexural modulus, and resilience (R) were measured using a three-point bending flexural test. Additionally, a fatigue flexural strength (FFS) test was performed using repeated subcritical loading at a frequency of 20 Hz for 50,000 cycles. The fracture toughness (KIC) was measured using the single-edge notched beam three-point bending test. All tests were performed after 24 h of storage or 10,000 thermal cycles.
RESULTS: The flowable SFRC demonstrated significantly higher σF, FFS, and KIC than the other flowable resin composites. However, all the flowable resin composites demonstrated statistically significant reductions in σF, R, FFS, and KIC after thermal cycles compared with those at baseline.
SIGNIFICANCE: The flowable SFRC had superior fracture resistance under external force, not only under a monotonic static load but also under repeated subcritical load stress. The findings indicate that the flowable SFRC is a promising resin composite due to its superior outcomes in the FFS test and other fracture resistance tests.
METHODS: A total of 10 commercially available flowable resin composites were used, including a flowable short fiber-reinforced resin composite (SFRC), five bulk-fill flowable resin composites, two injectable resin composites, and two single-shade flowable resin composites. The flexural strength (σF), flexural modulus, and resilience (R) were measured using a three-point bending flexural test. Additionally, a fatigue flexural strength (FFS) test was performed using repeated subcritical loading at a frequency of 20 Hz for 50,000 cycles. The fracture toughness (KIC) was measured using the single-edge notched beam three-point bending test. All tests were performed after 24 h of storage or 10,000 thermal cycles.
RESULTS: The flowable SFRC demonstrated significantly higher σF, FFS, and KIC than the other flowable resin composites. However, all the flowable resin composites demonstrated statistically significant reductions in σF, R, FFS, and KIC after thermal cycles compared with those at baseline.
SIGNIFICANCE: The flowable SFRC had superior fracture resistance under external force, not only under a monotonic static load but also under repeated subcritical load stress. The findings indicate that the flowable SFRC is a promising resin composite due to its superior outcomes in the FFS test and other fracture resistance tests.