Tsujimoto Akimasa, Barkmeier Wayne W, Takamizawa Toshiki, Latta Mark A, Miyazaki Masashi
Department of Operative Dentistry, Nihon University School of Dentistry.
Dent Mater J. 2016;35(3):418-24. doi: 10.4012/dmj.2015-280.
The mechanical properties, volumetric shrinkage and depth of cure of a short fiber-reinforced resin composite (SFRC) were investigated in this study and compared to both a bulk fill resin composite (BFRC) and conventional glass/ceramic-filled resin composite (CGRC). Fracture toughness, flexural properties, volumetric shrinkage and depth of cure of the SFRC, BFRC and CGRC were measured. SFRC had significantly higher fracture toughness than BFRCs and CGRCs. The flexural properties of SFRC were comparable with BFRCs and CGRCs. SFRC showed significantly lower volumetric shrinkage than the other tested resin composites. The depth of cure of the SFRC was similar to BFRCs and higher than CGRCs. The data from this laboratory investigation suggests that SFRC exhibits improvements in fracture toughness, volumetric shrinkage and depth of cure when compared with CGRC, but depth of cure of SFRC was similar to BFRC.
本研究对短纤维增强树脂复合材料（SFRC）的力学性能、体积收缩率和固化深度进行了研究，并与大块充填树脂复合材料（BFRC）和传统玻璃/陶瓷填充树脂复合材料（CGRC）进行了比较。测量了SFRC、BFRC和CGRC的断裂韧性、弯曲性能、体积收缩率和固化深度。SFRC的断裂韧性显著高于BFRC和CGRC。SFRC的弯曲性能与BFRC和CGRC相当。SFRC的体积收缩率显著低于其他测试树脂复合材料。SFRC的固化深度与BFRC相似，高于CGRC。该实验室研究的数据表明，与CGRC相比，SFRC在断裂韧性、体积收缩率和固化深度方面有所改善，但SFRC的固化深度与BFRC相似。
