摘要
目的 :观察厚度和遮色剂对 Artglass透光率的影响。方法 :制作 0 .5 0、0 .75、1.0 0、1.2 5、1.5 0、1.75、2 .0 0 mm厚、使用和不使用遮色剂的 Artglass树脂片 ,分别测定其在标准白板和金属底板上的色度 ,计算色差 ,并用激光测定其透光率。结果 :Artglass树脂的透光率随厚度增加呈对数下降 ,在相同厚度下 ,遮色组比无遮色组透光率明显降低。结论 :树脂厚度和遮色剂对复合树脂的透光率有明显影响。由于树脂的透光率与其颜色有密切关系 ,在修复体制作时应考虑厚度的影响和遮色剂的正确应用。
砄bjectives: To evaluate the effect of thickness and opaque resin on the light transmittance of Artglass. Methods: Samples of Artglass prepared in the thickness(mm) of 0.50,0.75,1.00,1.25,1.50,1.75 and 2.00 with or without opaque resin respectively.The light transmittance of the specimens was measured. The color values of the specimens on the CIE L*a*b* color system were determined by a digital chroma meter. Results: The light transmittance of Artglass decreased logarithmically with the increase of the thickness ( R 2=0.9834 in the group of samples without opaque and R 2=0.9390 in those with opaque). The light transmittance of Artglass with opaque resin was lower than that without opaque resin. Conclusion: Thickness and opaque resin have significant effect on the light transmittance of Artglass.
出处
《实用口腔医学杂志》
CAS
CSCD
北大核心
2001年第3期236-238,共3页
Journal of Practical Stomatology
