铸瓷贴面厚度对修复体颜色匹配性的影响  

Effect of Ceramic Thickness on the Color Matching of Ceramic Veneers

作　　者：邢文忠 展康茹 任大菲 陈小冬 

机构地区：[1]大连市口腔医院修复科,辽宁大连116021 [2]保定市第二医院口腔科,河北保定071000

出　　处：《口腔医学研究》2016年第12期1299-1302,共4页Journal of Oral Science Research

基　　金：大连市卫计委科技项目(编号:WSJ/KJC-2014-JL-77)

摘　　要：目的：分析瓷材料厚度变化对瓷贴面修复体颜色匹配性的影响。方法：选用36颗树脂人工牙按临床要求进行贴面牙体预备。制作二硅酸锂热压铸陶瓷贴面（HT和LT瓷块）,按修复体中1/3的厚度分为0.50mm、0.75mm和1.00mm组（n=6）。使用树脂粘接剂将瓷贴面粘接于预备后的树脂人工牙上。比色仪测量瓷贴面试样颈部、中部和切端区域的色度参数。计算瓷贴面试样与A2色标（Vita Classical比色板）的色差值△E。结果：3种厚度瓷贴面修复体与A2色标的色差值范围2.17~6.60,其中0.75mm和1.0mm组HT瓷贴面试样在颈部和中部与A2色标的色差值小于3.3。双因素方差分析表明瓷材料厚度和测色部位显著影响瓷贴面试样与A2色标的色差值（P〈0.001）。结论：瓷材料厚度变化影响瓷贴面修复体的颜色参数。随瓷材料厚度增加,LT瓷贴面亮度降低色彩饱和度增加,而HT瓷贴面亮度增加色彩饱和度降低。Objective：To analyze the effect of ceramic thickness on the color matching of ceramic veneers.Methods：Thirty-six artificial teeth（right maxillary central incisors,A2 shade,Endura,Shofu,Japan）were prepared following the veneer preparation protocol.An improved lithium-disilicate pressed glass ceramic materials（A2shade,HT and LT Blocks,IPS e.max Press,Ivoclar Vivadent）were used to fabricate the 0.50 mm,0.75 mm and 1.00 mm thick veneers at the body section.The ceramic veneer specimens were bonded on the corresponding artificial teeth with resin cement（TR shade,RelyXTM Veneer,3M,USA）,respectively.The color parameters of ceramic veneer specimens were measured by a clinical spectrophotometer（Crystaleye,Olympus,Japan）.The color differences（ΔE）of ceramic veneer specimens and A2 shade tab（Vita Classical Shade Guide,Vita Zahnfabrik,Germany）and C＊abvalues were calculated.Results：TheΔE values ranged from 2.17 to 6.60.TheΔE values were less than 3.3at the body and cervical section of veneer when the 0.75 mm and 1.0mm thick ceramic veneers were fabricated by HT blocks.Two-way ANOVA showed that theΔE values were significantly affected by the ceramic thickness and the sections of ceramic veneers（P〈0.001）.Conclusion：The color parameters of ceramic veneers were significantly influenced by the ceramic thickness.With the increasing of ceramic thickness,the values of HT ceramic veneer specimens increased and the chroma values decreased.Moreover,LT veneers exhibited a higher chroma and lower brightness.

关 键 词：瓷贴面 树脂粘接剂 树脂牙 色差 

分 类 号：R783[医药卫生—口腔医学]