Department of Dental Materials Science, School of Life Dentistry at Niigata, The Nippon Dental University, 1-8 Hamaura-cho, Chuo-ku, Niigata951-8580, Japan.
Dent Mater J. 2012 Feb 3;31(1):61-7. doi: 10.4012/dmj.2010-091. Epub 2012 Jan 21.
The purpose of this study was to investigate the relation between the texture of worn surfaces of composite resins and the maximum wear depth. Three types of composite resins were investigated: a hybrid composite resin consisting of irregular-shaped inorganic filler particles (APX); a composite resin which contained small, irregular-shaped, inorganic filler particles and large organic composite filler particles (SRE); and another which contained spherical inorganic filler particles and large organic composite filler (SDX). Surface profile measurement and elemental analysis were carried out on the worn surfaces of these three composite resins using an electron probe microanalyzer (EPMA). For the composite resin which exhibited the largest maximum wear depth, its surface texture was slightly rough with fine pores and grooves. For the composite resin with lowest maximum wear depth, it had a smooth worn surface due to the large organic composite filler being abraded during the combined wear test.
本研究旨在探讨复合树脂磨损表面的质地与最大磨损深度之间的关系。研究了三种类型的复合树脂：一种由不规则形状的无机填料颗粒组成的混合复合树脂（APX）；一种含有小的、不规则形状的无机填料颗粒和大的有机复合填料颗粒的复合树脂（SRE）；另一种含有球形无机填料颗粒和大的有机复合填料的复合树脂（SDX）。使用电子探针微分析仪（EPMA）对这三种复合树脂的磨损表面进行了表面轮廓测量和元素分析。对于表现出最大磨损深度的复合树脂，其表面质地稍微粗糙，有细小的孔隙和凹槽。对于磨损深度最低的复合树脂，由于在复合磨损试验中有机复合材料被磨损，其磨损表面较为光滑。
