摘要目的:分析不同质量分数锆基色料对熔融沉积成型（FDM）聚醚醚酮（PEEK）复合材料色彩学性能的影响，探讨锆基色料用于PEEK复合材料计算机配色的可行性。方法:采用FDM工艺打印制作2个对照组［纯PEEK组、PEEK-TiO 2组（PEEK与20%TiO 2复合）］试件以及根据锆基色料种类（锆镨黄、锆铁红、锆钒蓝）和质量分数（0.1%、0.5%、1.0%）依次配对的9个实验组单色PEEK复合试件（PEEK、20%TiO 2与锆基色料共混）。通过分光光度仪获得各组试件反射率光谱曲线与色度值，并得出实验组每种颜色PEEK复合材料与色料质量分数的关系。使用光固化树脂（Filtek Z350XT Body）制作临床常用系列牙色靶目标色片，通过全光谱配色方法计算PEEK复合材料的临床常用系列牙色配方，并制作验证组试件（PEEK、20%TiO 2与3种锆基色料共混），分别计算对照组（纯PEEK组、PEEK-TiO 2组）以及验证组各牙色试件与靶目标色片的色差。 结果:不同种类的单色PEEK复合试件的反射率光谱曲线均具有显著特征性，不同质量分数的相同锆基色料可影响试件色度值；通过计算机配色，验证组各牙色试件与相应靶目标色片的色差为1.59~14.55。结论:3种锆基色料用于PEEK-TiO 2复合材料全光谱配色具有可行性。

abstractsObjective:To analyze the effect of zirconium-based pigments with different mass fractions on the colorimetric properties of fused deposition modeling (FDM) polyetheretherketone (PEEK) composites, and to investigate the feasibility of using these pigments for computer color matching of PEEK composites.Methods:Specimens were fabricated using FDM technology, comprising two control groups [Pure PEEK group, PEEK-TiO 2 group (PEEK compounded with 20% TiO 2)] and nine experimental groups based on the type of zirconium-based pigment (zirconium praseodymium yellow, zirconium iron red, zirconium vanadium blue) and mass fraction (0.1%, 0.5%, 1.0%). The experimental group specimens consisted of PEEK blended with 20% TiO 2 and the respective zirconium-based pigment. The spectral reflectance curve and chromaticity values of all specimens were measured using a spectrophotometer. The relationship between the chromaticity values of each colored PEEK composite in the experimental groups and the pigment mass fraction was determined. Shade guide tabs mimicking clinically used tooth shades were fabricated using a light-curing resin (Filtek Z350XT Body). The full-spectrum color matching method was employed to calculate the PEEK composite formulations (PEEK, 20% TiO 2, blends of the three zirconium-based pigments) required to match these target tooth shades. Verification group specimens based on these calculated recipes were then fabricated. The color difference between each verification group specimen and its corresponding target shade tab was calculated. Color differences between the target shade tabs and the two control groups (Pure PEEK, PEEK-TiO 2) were also calculated. Results:The spectral reflectance curves of PEEK composite specimens containing different types of zirconium-based pigments exhibited distinct characteristic features. The chromaticity values were significantly affected by the mass fraction of the same zirconium-based pigment. Based on computer color matching calculations, the color differences between the verification group specimens and the target shade tabs ranged from 1.59 to 14.55.Conclusions:This study demonstrates the feasibility of utilizing the three zirconium-based pigments (zirconium praseodymium yellow, zirconium iron red, zirconium vanadium blue) for full-spectrum computer color matching of PEEK-TiO 2 composites.