背景颜色对4种全瓷底层材料饰瓷后颜色的影响

目的探讨不同桩核材料背景色对Vita In-Ceram AL2色瓷沉积氧化铝、Z21色瓷沉积氧化锆、Cercon base color氧化锆及Cercon base氧化锆全瓷材料饰瓷后颜色的影响。方法采用分光测色计测量各组试样在贵金属、镍铬合金、银汞合金和树脂背景下的色度值并计算组间色差值。结果 Z21色瓷沉积氧化锆饰瓷后在银汞合金背景下与贵金属合金、复合树脂背景下之间的色差值最大,但4种全瓷底层材料饰瓷后在不同背景下的色差值均不能够为人眼所识别(ΔE<1.5)。结论 4种全瓷底层材料饰瓷后,受背景颜色的影响均较小,不遮蔽背景色时,修复体可达到较好的美学修复效果。

Influence of background color on four veneered dental ceramic core material

Objective To investigate the influence of background color on veneered In-Ceram and Cercon dental ceramics including Vita In-Ceram Electroformed Alumina(AL2),Electroformed Zirconia(Z21),Cercon base color Zirconia and Cercon base Zirconia.Methods The colorimetric values of all the materials on noble metal,Ni-Cr alloy,silver amalgam and resin background were measured with a spectrocolorimeter,and the color difference among the groups was calculated.Results After veneered,the color difference of Z21 Electroformed Zirconia was more distinct against the background of silver amalgam than against the backgrounds of noble metal and resin,but the color differences of the 4 veneered dental ceramics against different backgrounds were unidentifiable by human eyes(△E<1.5).Conclusion After veneered,AL2 electroformed alumina,Z21 electroformed zirconia,Cercon base Zirconia and Cercon base color Zirconia are less influenced by the background color,and covering the background color is therefore not necessary.