Derrien G, Le Menn G
Department of Prosthetics, Faculty of Dentistry, University of Bretagne Occidentale, Faculty of Dentistry, Brest, France.
J Prosthet Dent. 1995 Jul;74(1):1-7. doi: 10.1016/s0022-3913(05)80221-5.
This study evaluated the reproduction of detail by Fuji-rock artificial stone, Epoxydent epoxy resin, and Steady-plast polyurethane resin. A polyvinyl siloxane impression was made of a disk-shaped calibration model, with etched grooves ranging from 1 to 46 microns in depth. The die materials were poured in the silicone impression of the disk, then examined with a scanning electron microscope and two-dimensional profilometer. The results revealed that the artificial stone could not reproduce details smaller than 20 microns because of the size of the crystalline structure, whereas epoxy resin and polyurethane resin accurately reproduced details of 1 to 2 microns.
本研究评估了富士岩石膏人造石、Epoxydent环氧树脂和Steady-plast聚氨酯树脂对细节的复制情况。使用盘状校准模型制作了聚醚橡胶印模，其上蚀刻有深度从1至46微米不等的凹槽。将模型材料灌注到盘状的硅橡胶印模中，然后用扫描电子显微镜和二维轮廓仪进行检查。结果显示，由于晶体结构的尺寸，人造石无法复制小于20微米的细节，而环氧树脂和聚氨酯树脂能够准确复制1至2微米的细节。
