Williams J A, Billington R W, Pearson G J
Department of Biomaterials, Institute of Dental Surgery, London, UK.
Biomaterials. 1993 Jun;14(7):551-5. doi: 10.1016/0142-9612(93)90245-w.
The lactic acid jet test erosion rates were measured for 13 radiopaque glass ionomer dental materials obtained from a number of manufacturing sources. The erosion rate was compared with that found for the non-radiopaque restorative from the same manufacturer to determine whether the addition of an extra element had affected the resistance to erosion. Six materials were not significantly affected, six showed a significant increase in erosion rate. Only one material showed a reduced erosion rate. Materials containing a high proportion of any additive could show an increased erosion rate. Glass ionomer cements with or without radiopacifying elements had low erosion rates compared with other dental materials.
对从多个生产厂家获得的13种不透射线的玻璃离子牙科材料进行了乳酸喷射试验侵蚀率的测量。将侵蚀率与同一厂家生产的不透射线修复材料的侵蚀率进行比较，以确定添加额外元素是否影响了抗侵蚀性。6种材料未受到显著影响，6种材料的侵蚀率显著增加。只有一种材料的侵蚀率降低。含有高比例任何添加剂的材料可能显示出侵蚀率增加。与其他牙科材料相比，含或不含射线阻射元素的玻璃离子水门汀侵蚀率较低。
