烧结次数对两种钛瓷粉颜色的影响  

Influence of repeated sintering on the color of two brands of porcelain-fused-to-titanium

作　　者：舒成军[1] 骆小平[1] 邬烈[1] 

机构地区：[1]南京大学医学院附属口腔医院修复科,江苏南京210008

出　　处：《华西口腔医学杂志》2007年第4期354-357,共4页West China Journal of Stomatology

基　　金：江苏省"135"重点人才基金资助项目(2002008)

摘　　要：目的研究牙科钛表面烤瓷烧结次数对钛烤瓷修复体颜色的影响,以指导技工和临床烤瓷操作,同时比较两种瓷粉的颜色在烧结中的稳定性能是否存在差异。方法采用Ti-22和Vita Titankeramik两种钛瓷粉,设计制作钛瓷标准试件,包括遮色瓷、体瓷和钛-遮色瓷-体瓷试件,经1、3、5、7、9次烧结处理,每次烧结后采用ShadeEye NCC比色仪,根据CIE1976L*a*b*色度系统标准测量各样本的L*a*b*值,并计算色差值、彩度和色调角,进行统计分析。结果烧结5次以内,各组试件的L*a*b*值及彩度、明度、色差及色调角均无明显变化,继续烧结后两种瓷粉的L*a*值均发生变化,且有统计学差异(P<0.05)。经过9次烧结,各组试件的色差变化均小于1.5。结论烧结次数在5次以内,钛瓷的颜色无明显变化,继续烧结则出现颜色差异,但肉眼尚未能辨别。Objective To investigate the influence of repeated sintering on the color of two porcelain-fused-totitanium, and the differences between the two porcelains. Methods Thirty samples were prepared and sintered for 9 times. The color of samples were measured following sintering 1, 3, 5, 7, 9 times by ShadeEye NCC colodmeter according to two brands of porcelains with CIE1976L＊a＊b＊ color system, and calculated relevant chrome, chromatism and hue, and statistical analysis. Results When two brands of porcelains were sintered 5 times, the color parameters had no significant change and sintered continuely, the color parameters of L＊ and a＊ had obvious changes, but can＇t be observed by eyes. Conclusion The color parameters of titanium-porcelains have no significant change after repeated sintering.

关 键 词：烧结钛-瓷 颜色 烧结 色度计 

分 类 号：R783.2[医药卫生—口腔医学]