Department of Dental Materials Science, Tokyo Dental College, Mihama-ku, Chiba 261-8502, Japan.
Dent Mater J. 2009 Sep;28(5):537-43. doi: 10.4012/dmj.28.537.
This study examined the mechanical properties of roots combined with prefabricated fiber post. Three types of specimens were evaluated: (1) prefabricated fiber post alone (FP); (2) core composite resin with FP (CFP); and (3) root with CFP (RCFP). The volume fractions of the prefabricated fiber post in the core composite resin (FP/CFP ratio) were set to 0, 0.16, 0.22, 0.28, and 0.48. Bending test for FP and CFP, and diametral compression test for FP, CFP, and RCFP were carried out. The FP/CFP ratio showed no effect on the diametral tensile strength (DTS) of RCFP; and there were no significant differences in DTS with/without FP. The flexural strength of CFP increased with increase in FP/CFP ratio. The DTS of CFP declined in comparison with that of core composite resin only.
本研究探讨了带预制纤维桩的牙根的机械性能。评估了三种类型的标本：（1）单独预制纤维桩（FP）；（2）带有 FP 的核复合树脂（CFP）；和（3）带有 CFP 的牙根（RCFP）。预制纤维桩在核复合树脂中的体积分数（FP/CFP 比）设置为 0、0.16、0.22、0.28 和 0.48。对 FP 和 CFP 进行弯曲试验，对 FP、CFP 和 RCFP 进行直径压缩试验。FP/CFP 比对 RCFP 的直径拉伸强度（DTS）没有影响；有/没有 FP 的 DTS 没有显著差异。CFP 的弯曲强度随 FP/CFP 比的增加而增加。与仅核复合树脂相比，CFP 的 DTS 下降。
