使用分光光度计比较三种不同氧化锆底层结构的陶瓷颜色。

Comparison of Shade of Ceramic with Three Different Zirconia Substructures using Spectrophotometer.

作者信息

Habib Syed Rashid, Shiddi Ibraheem F Al

机构信息

Assistant Professor, Department of Prosthodontics, College of Dentistry, King Saud University, Po Box-60169, King Abdullah Road, Riyadh 11545, Saudi Arabia, Phone: 0096614677441, e-mail:

Department of Prosthodontics, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.

出版信息

J Contemp Dent Pract. 2015 Feb 1;16(2):135-40. doi: 10.5005/jp-journals-10024-1650.

DOI:10.5005/jp-journals-10024-1650

PMID:25906805

Abstract

OBJECTIVE

This study assessed how changing the Zirconia (Zr) substructure affected the color samples after they have been overlaid by the same shade of veneering ceramic.

MATERIALS AND METHODS

Three commercial Zr materials were tested in this study: Prettau(®) Zirconia (ZirKonZahn, Italy), Cercon (Dentsply, Germany) and InCoris ZI (Sirona, Germany). For each system, 15 disk-shaped specimens (10 × 1 mm) were fabricated. Three shades of A1, A2 and A3.5 of porcelain (IPS e.MaxCeram, IvoclarVivadent, USA) were used for layering the specimens. Five specimens from each type of Zr were layered with same shade of ceramic. Color measurements were recorderd by a spectrophotometer Color-Eye(®) 7000A (X-Rite, Grand Rapids, MI). Mean values of L, a, b color coordinates and ΔE were recorded and comparisons were made.

RESULTS

Differences in the ΔE were recorded for the same porcelain shade with different Zr substructures and affected the color of the specimens (p < 0.01, ANOVA). The maximum difference between the ΔE values for the A1, A2 and A3.5 shades with three types of Zr substructures was found to be 1.59, 1.69 and 1.45 respectively. Multiple comparisons of the ΔE with PostHoc Tukey test revealed a statistically significant difference (p < 0.05) between the three types of Zr, except between Type 2 Zr and Type 3 Zr for the Shade A1. The mean values of L, a, b and ΔE for the Prettau(®) Zirconia substructure were found to be the least among the three types.

CONCLUSIONS

The brand of Zr used influences the final color of the all ceramic Zr based restorations and this has clinical significance.

摘要

目的

本研究评估了在相同色度的饰面陶瓷覆盖后，改变氧化锆（Zr）底层结构如何影响颜色样本。

材料与方法

本研究测试了三种商用Zr材料：Prettau（®）氧化锆（意大利ZirKonZahn公司）、Cercon（德国登士柏公司）和InCoris ZI（德国西诺德公司）。对于每个系统，制作了15个圆盘形试件（10×1毫米）。使用三种色度A1、A2和A3.5的瓷粉（美国IvoclarVivadent公司的IPS e.MaxCeram）对试件进行分层。每种Zr类型的五个试件用相同色度的陶瓷进行分层。用分光光度计Color-Eye（®）7000A（美国爱色丽公司，密歇根州大急流城）记录颜色测量值。记录L、a、b颜色坐标和ΔE的平均值并进行比较。

结果

对于相同瓷粉色度但Zr底层结构不同的情况，记录到了ΔE的差异，且这影响了试件的颜色（p<0.01，方差分析）。发现三种Zr底层结构在A1、A2和A3.5色度下的ΔE值之间的最大差异分别为1.59、1.69和1.45。用PostHoc Tukey检验对ΔE进行多重比较显示，三种Zr类型之间存在统计学显著差异（p<0.05），A1色度下的2型Zr和3型Zr之间除外。发现Prettau（®）氧化锆底层结构的L、a、b和ΔE平均值在三种类型中最小。