Ku Ri-Mo, Ko Ching-Chang, Jeong Chang-Mo, Park Mi-Gyoung, Kim Hyung-Il, Kwon Yong Hoon
Department of Dental Materials, School of Dentistry and Medical Research Institute, Pusan National University.
Dent Mater J. 2015;34(2):168-74. doi: 10.4012/dmj.2014-178. Epub 2015 Feb 24.
As a lining or restoration material, flowable composites are popular due to their ease in use and agreeable marginal adaptation of tooth cavity. The purpose of the present study was to evaluate various properties of flowable composites which were claimed to be of high or low flowability by the manufacturers. For the study, twelve flowable composites from six different manufacturers were used. Based on the manufacturers' claim, they were divided into two groups: high or low flowability. The products grouped in high flowability showed significantly higher (p<0.05) flow rate (flow distance), polymerization shrinkage, and microhardness (on the top surface), regardless of light-curing unit, than those grouped in low flowability. On the other hand, water sorption and solubility showed nonsignificantly different values regardless of flowability. Through the study, flow rate had low correlation with microhardness (R<0.23), polymerization shrinkage (R<0.60), and water sorption and solubility (R<0.36) regardless of light-curing unit.
作为一种衬层或修复材料，可流动复合树脂因其易于使用以及与牙洞良好的边缘适应性而广受欢迎。本研究的目的是评估不同制造商声称具有高流动性或低流动性的可流动复合树脂的各种性能。在该研究中，使用了来自六个不同制造商的十二种可流动复合树脂。根据制造商的声称，它们被分为两组：高流动性组或低流动性组。无论使用何种光固化设备，高流动性组产品的流速（流动距离）、聚合收缩率和（顶面的）显微硬度均显著高于（p<0.05）低流动性组产品。另一方面，无论流动性如何，吸水率和溶解度的值均无显著差异。通过该研究，无论使用何种光固化设备，流速与显微硬度（R<0.23）、聚合收缩率（R<0.60）以及吸水率和溶解度（R<0.36）的相关性均较低。
