Derand P, Vereby P
Public Dental Service, Norberg, Sweden.
J Prosthet Dent. 1999 Apr;81(4):460-3. doi: 10.1016/s0022-3913(99)80014-6.
The resistance of wear of dental porcelains is of concern when selecting a material for metal-ceramic and all-ceramic restorations.
An in vitro investigation was performed to rank a number of dental porcelains with respect to their wear-resistance properties. Material and methods. The wear test of 9 dentin porcelains was carried out on a wear test machine and the amount of wear was measured as the reduction of height of the specimens. The surface hardness and surface roughness were also considered.
Resistance of wear was lowest for Finesse porcelain, and highest for Creation porcelain. Surface hardness values of the porcelain were quite similar for all porcelains but could be classified into 3 groups with Finesses and Vita Alpha porcelains as the softest and Creation porcelain as the hardest material.
The low-fusing porcelain Finesse showed less abrasion resistance in comparison with Ducera Gold and Ti-Ceram porcelains. Among the high-fusing types, Vita Alpha porcelain was more wear-disposed than the others.
在为金属烤瓷和全瓷修复体选择材料时，牙科瓷器的耐磨性令人关注。
进行一项体外研究，对多种牙科瓷器的耐磨性能进行排序。材料与方法。在磨损试验机上对9种牙本质瓷器进行磨损试验，磨损量通过测量试样高度的降低来确定。还考虑了表面硬度和表面粗糙度。
Finesse瓷器的耐磨性最低，Creation瓷器的耐磨性最高。所有瓷器的表面硬度值相当相似，但可分为3组，Finesse和Vita Alpha瓷器最软，Creation瓷器最硬。
与Ducera Gold和Ti-Ceram瓷器相比，低熔瓷Finesse的耐磨性较差。在高熔瓷类型中，Vita Alpha瓷器比其他瓷器更易磨损。
