Yoshida Kaneyoshi, Takahashi Yutaka, Hamanaka Ippei, Kawaguchi Tomohiro, Sasaki Hirono, Shimizu Hiroshi
Division of Removable Prosthodontics, Fukuoka Dental CollegeFukuokaJapan.
Division of Biomaterials, Kyushu Dental UniversityKitakyushuJapan.
Acta Biomater Odontol Scand. 2015 Oct 12;1(2-4):81-85. doi: 10.3109/23337931.2015.1099441. eCollection 2015 Dec.
: This study evaluated the reinforcing effect of glass fiber-reinforced composite (FRC) reinforcement on flexural strength at the proportional limit (FS-PL) of a repaired denture base resin. : Repaired denture base resins reinforced with metal and with FRC reinforcement, and that without reinforcement were tested. The ultimate flexural strength, the FS-PL and the elastic modulus of repaired denture base resins were tested. The joint efficiency (times) of the repaired denture base resins on the intact denture base resin was evaluated. : The repaired denture base resins reinforced with metal reinforcement and with FRC reinforcement had significantly higher ultimate flexural strength than the repaired denture base resin without reinforcement ( < 0.05) and were not significantly different from each other ( > 0.05). The FS-PL of a repaired denture base resin reinforced with the FRC reinforcement was similar to that with the metal reinforcement ( > 0.05), and these were significantly higher than the FS-PL of a repaired denture base resin without reinforcement ( < 0.05). The elastic modulus of the repaired denture base resin reinforced with the FRC reinforcement was significantly lower than that with metal reinforcement ( < 0.05) and was significantly higher than that without reinforcement ( < 0.05). The joint efficiency of the FRC reinforced specimen was 0.98. : The FRC reinforcement had a reinforcing effect on the FS-PL of a repaired denture base resin.
本研究评估了玻璃纤维增强复合材料（FRC）增强对修复义齿基托树脂比例极限抗弯强度（FS-PL）的增强效果。对用金属增强、FRC增强以及未增强的修复义齿基托树脂进行了测试。测试了修复义齿基托树脂的极限抗弯强度、FS-PL和弹性模量。评估了修复义齿基托树脂相对于完整义齿基托树脂的联合效率（倍数）。用金属增强和FRC增强的修复义齿基托树脂的极限抗弯强度显著高于未增强的修复义齿基托树脂（P<0.05），且彼此之间无显著差异（P>0.05）。用FRC增强的修复义齿基托树脂的FS-PL与用金属增强的相似（P>0.05），且均显著高于未增强的修复义齿基托树脂的FS-PL（P<0.05）。用FRC增强的修复义齿基托树脂的弹性模量显著低于用金属增强的（P<0.05），且显著高于未增强的（P<0.05）。FRC增强试件的联合效率为0.98。FRC增强对修复义齿基托树脂的FS-PL有增强作用。
