Influence of Background Material on 3 Veneered All-Ceramic Core Materials

摘要

To study the influence of background color on 3 veneered all-ceramic core materials,the color of all veneered samples that were put on noble metal,Ni-Cr alloy,Ag-Hg alloy and resin background was measured with chromatism instrument(and the chromatic aberration value among groups was Calculated).Under different backgrounds,there was significant difference in the L,a and b values among Empress II samples,there was significant difference in a and b values among In-Ceram Alumina samples,and there was no difference in the L,a and b values among In-Ceram Zirconium samples.After veneered,the influence of background color on Empress II was clear,on In-Ceram Alumina was less clear,and on In-Ceram Zirconium was void.