Dahl B L, Oilo G
Department of Prosthetic Dentistry and Stomatognathic Physiology, Dental Faculty, University of Oslo, Norway.
Quintessence Int. 1994 Aug;25(8):561-5.
An in vivo experiment to determine the wear of restorative materials (gold, ceramic, and microfilled resin) was performed in a patient with bruxism. Telescopic crowns were placed on teeth 35, 36, and 37. The opposing surfaces were all made from ceramic material. The weight loss of the materials was recorded after 30, 60, and 90 days and converted to volume loss. Replicas for scanning electron microscopic studies were obtained. Gold and ceramic material wore equally, while the wear of microfilled resin was two and a half times as much. The ceramic material and the microfilled resin chipped and fractured, but the gold did not. Mainly abrasive and fatigue types of wear were found in all materials.
在一名磨牙症患者身上进行了一项体内实验，以确定修复材料（金、陶瓷和微填料树脂）的磨损情况。在35、36和37号牙上放置了套筒冠。相对的表面均由陶瓷材料制成。在30天、60天和90天后记录材料的重量损失，并换算为体积损失。制备了用于扫描电子显微镜研究的复制品。金和陶瓷材料的磨损程度相同，而微填料树脂的磨损是前者的两倍半。陶瓷材料和微填料树脂出现了崩裂和断裂，但金没有。在所有材料中均发现主要为磨蚀和疲劳类型的磨损。
