Evaluation of physical properties of fiber-reinforced composite resin
Evaluation of physical properties of fiber-reinforced composite resin
复制标题
DOI：
10.1016/j.dental.2020.04.012
复制
发表时间：
2020-08-01
期刊：
影响因子：
5
通讯作者：
Hayashi, Mikako
中科院分区：
文献类型：
--
作者：
Suzaki, Naoko;Yamaguchi, Satoshi;Hayashi, Mikako
目标。本研究旨在研究由多向玻璃纤维编织层组成的纤维增强CAD/CAM树脂圆盘的物理性能。CAD/CAM标本(Trinia、SHofu)的纤维取向被指定为纵向(L)、纵向旋转(LR)和反纵向(AL)。还测试了纤维增强复合材料(Everx After，GC(E))和常规复合材料(Beauti Core Flow Paste，SHOFU(B))。在日本岛津公司的Autograph AG-IS万能试验机上进行了无缺口棱柱形试件的三点弯曲试验和拉伸试验。标本在水中保存24小时或1周后进行吸水试验。通过三点弯曲试验获得抗弯强度和断裂韧性。Trinia L组和LR组的弯曲强度较高，分别为254.2±22.3和248.8±16.7 Mpa。这些指标大约是AL、E和B组(96.8-98.0 Mpa)的2.5倍(p
Objectives. This study aimed to investigate physical properties of a fiber-reinforced CAD/CAM resin disc, which included woven layers of multi -directional glass fibers.Methods. Fiber orientations of CAD/CAM specimens (TRINIA, SHOFU) were specified as longitudinal (L), longitudinal -rotated (LR), and anti-longitudinal (AL). A fiber-reinforced composite (everX posterior, GC (E)) and a conventional composite (Beauti core flow paste, SHOFU (B)) were also tested. A three-point bending test and a tensile test with notchless prism-shaped specimens were conducted using a universal testing machine (AUTOGRAPH AG-IS, Shimadzu). A water absorption test was also carried out after the specimens were stored in water for 24h or 1 week. Flexural strength and fracture toughness were obtained by conducting a three-point bending test.Results. TRINIA L and LR groups showed significantly high flexural strength (254.2 1 22.3 and 248.8 1 16.7 MPa, respectively). Those were approximately 2.5 times higher than those in AL, E, and B groups (96.8-98.0 MPa) (p