摘要
目的 比较4种临床常用全瓷贴面修复材料的色彩参数和透光率,以期为临床提供参考.方法 制作IPS Empress（R） CAD（高透光率A2色）、IPS e.max（R） Press（高透光率A2色）、IPS e.max（R）CAD（高透光率A2色）及VITABLOCS（R） MarkⅡ（A2色）4种瓷材料的片状试件,分别设为A、B、C、D组,每组10个试件,打磨抛光后控制试件厚度为（1.00±0.01） mm.使用分光测色计和透光率测试仪测量每组试件明度（L^＊值）、红绿色品（a^＊值）和黄蓝色品（b^＊值）及可见光积分透射比（T）,计算彩度（C^＊ab值）以及各组试件与A2色标准比色片的色差（△E）.结果 A和D组L^＊、a^＊、b^＊及C^＊ab值间差异均无统计学意义（P＞0.05）,但与B、C组L^＊、a^＊、b^＊及C^＊ab值间差异均有统计学意义（P＜0.05）;B、C组b^＊及C^＊ab值间差异均无统计学意义（P＞0.05）,但两组L^＊及a^＊值间差异均有统计学意义（P＜0.05）.A、B、C、D组瓷材料与A2色标准比色片的色差（△E）分别为6.05±0.12、5.11±0.27、3.73±0.27和6.30±0.38;T依次为（29.69±0.31）％、（25.83±0.36）％、（28.92±0.47）％和（26.94±0.33）％.结论 4种瓷贴面材料的色彩参数存在一定差异,均有较高的透光率.瓷材料C与A2色标准比色片的色差最小.
Objective To analyze the color parameters and translucency of four frequently-used veneer materials.Methods Forty disc specimens[（1.00±0.01） mm in thickness,10 mm in diameter] were fabricated according to the manufacturer＇s instructions with IPS Empress（R） CAD[A2,high translucency（HT）],IPS e.max（R） Press（A2,HT）,IPS e.max（R） CAD（A2,HT） and VITABLOCS（R） Mark Ⅱ（A2） respectively and were divided into Groups A,B,C,D.All of the specimens were ground and polished on a grinding machine.Then color parameters（L^＊,a^＊,b^＊） and transmittance（T） were measured using spectrocolorimeter and transmissivity testing device.The color parameters of the specimens were compared to the color parameters of A2 shade of Ivoclar Vivadent A-D shade guide.The data were analyzed with one-way analysis of variance（ANOVA）,and mean values were compared by the Tukey＇s test（α =0.05）.Results There was no statistical difference between the color parameters L^＊,a^＊,b^＊ and C^＊ab of Group A and Group D（P〉0.05）.But the color parameters of those two ceramic materials were statistically different from the color parameters of Group B and Group C（P〈 0.05）.There was no statistical difference between color parameters b^＊ and C^＊ab of Group B and Group C（P〉 0.05）.However,the color parameters L^＊ and a^＊ of the two materials were statistically different（P〈0.05）.The color differences（△E） between Group A,B,C,D and standard A2 were 6.05 ±0.12,5.11 ±0.27,3.73±0.27,6.30±0.38 respectively.The transmittances of Group A,B,C,D were （29.69± 0.31）%,（25.83±0.36） %,（28.92±0.47）% and （26.94±0.33）% respectively.Conclusions The color parameters of these four materials are different.Their transmittance are relatively high but statistically different.The color difference（△E） between IPS e.max（R） CAD（A2,HT） and standard A2 is lowest among all the groups.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2015年第1期43-46,共4页
Chinese Journal of Stomatology
基金
江苏省临床科技专项基金（BL2012038）
作者简介
通信作者：骆小平，Email：l_xiaoping@yahoo．com，电话：025-83620260
