玻璃纤维取向对 CAD/CAM 用玻璃纤维增强复合树脂块弯曲性能的影响。
Effect of fiberglass orientation on flexural properties of fiberglass-reinforced composite resin block for CAD/CAM.
机构信息
Oral Biomaterials Development Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
Oral Prosthetic Engineering, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
出版信息
Dent Mater J. 2019 Oct 2;38(5):738-742. doi: 10.4012/dmj.2018-249. Epub 2019 Jun 21.
A fiberglass-reinforced composite resin (FRP) block using a plain woven fiberglass sheet for CAD/CAM has been introduced in dental practice. The aim of the present study was to evaluate the effects of the fiberglass sheet orientation on the flexural properties of an FRP block. The flexural properties of five types of fiberglass sheet-assigned specimens were examined using a three-point bending test. A one-way analysis of variance revealed that the orientation of fiberglass sheet significantly influenced the flexural strength, 0.2% yield strength, and flexural modulus. The values of the flexural properties of the FRP were the largest when the fiberglass sheets were perpendicular to the applied force, and the smallest when the fiberglass was parallel to the same. The flexural properties of the FRP block were anisotropic and they were significantly influenced by the orientation of fiberglass sheet.
一种用于 CAD/CAM 的玻璃纤维增强复合树脂（FRP）块，使用平纹玻璃纤维片，已在牙科实践中得到应用。本研究的目的是评估玻璃纤维片取向对 FRP 块弯曲性能的影响。使用三点弯曲试验对五种类型的玻璃纤维片分配的试件的弯曲性能进行了检查。单向方差分析表明，玻璃纤维片的取向显著影响弯曲强度、0.2%屈服强度和弯曲模量。当玻璃纤维片垂直于作用力时，FRP 的弯曲性能值最大，当玻璃纤维片平行于作用力时，FRP 的弯曲性能值最小。FRP 块的弯曲性能具有各向异性，并且受到玻璃纤维片取向的显著影响。
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