中华口腔医学研究杂志(电子版) ›› 2011, Vol. 5 ›› Issue (06) : 614 -620. doi: 10.3877/cma.j.issn.1674-1366.2011.06.010 × 扫一扫
临床研究
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Xiao-min MA1, Yan LI1, Dan-ni FAN1,†()
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马晓敏, 李彦, 范丹妮. 陶瓷材料对瓷贴面颜色的影响[J/OL]. 中华口腔医学研究杂志(电子版), 2011, 5(06): 614-620.
Xiao-min MA, Yan LI, Dan-ni FAN. Influence of ceramic materials on the color of porcelain veneer restorations[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2011, 5(06): 614-620.
目的
研究两类三种陶瓷材料对瓷贴面修复颜色的影响,为临床工作中瓷贴面修复体与比色板的颜色匹配性提供指导。
方法
制作直径10 mm、厚度0.7 mm 的A2 色瓷贴面圆盘试件,按陶瓷材料及制作工艺分为无遮色长石质烤瓷组、遮色长石质烤瓷组、IPS e.max Press 铸瓷组3 组。 每组10 个试件,共计30 个试件。 选择Natural Die Material Shade Guide 比色板中的ND4、ND6、ND8 三种颜色,分别代表轻、中、重度变色牙底色,采用对应颜色树脂各制作1 个底色圆盘。 对每个瓷贴面试件分别以3 种底色圆盘为基牙底色,采用Vita Easyshade电脑比色仪测量瓷贴面修复体的色度值。 计算各组瓷贴面修复体与标准比色片A2 的色差。
结果
在轻、中、重度变色牙背景条件下,两种陶瓷材料的瓷贴面修复体与标准比色片A2 间色差的比较结果为,IPS e.max Press 铸瓷组<无遮色长石质烤瓷组<遮色长石质烤瓷组,差异有统计学意义(P <0.05)。
结论
采用长石质烤瓷贴面及IPS e.max Press 热压铸瓷贴面模拟修复不同程度的变色牙时,热压铸瓷贴面与标准比色片的颜色匹配性高于长石质烤瓷贴面。
Objective
This study aimed to determine the color match of porcelain veneer restoration among different ceramic systems.
Methods
A2-color porcelain veneer disc specimens(diameter: 10 mm, thickness: 0.7 mm) were manufactured and divided into 3 groups according to different ceramic materials: opaque feldspathic porcelain group, non-opaque feldspathic porcelain group, and IPS e.max Press group.Three discolored underlying discs were made of natural die material resin with the color of ND4, ND6, ND8 (Natural Die Material Shade Guide),which represented low, medium and heavy discolored tooth, respectively.The porcelain specimen was placed on the surface of discolored underlying disc, and then the L*a*b* value of each specimen was measured with Vita Easyshade.The mean color difference (ΔE) between the specimen and shade guide teeth A2 was calculated and analyzed.
Results
The comparison of ΔE value between the specimens and shade A2 between three groups were: IPS e.max Press group <non-opaque feldspathic porcelain group <opaque feldspathic porcelain group.The difference of ΔE was statistically significant among the three groups (P <0.05).
Conclusion
IPS e.max Press heated-pressed porcelain veneer restoration can obtain better expected shade than that of feldspathic porcelain when restore discolored teeth with the same color.