烧结次数对椅旁计算机辅助设计与制作二硅酸锂玻璃陶瓷贴面不同部位颜色的影响

发布时间：2018-02-11 10:14

本文关键词： 贴面多次烧结计算机辅助设计与制作二硅酸锂玻璃陶瓷颜色扫描电镜　出处：《华西口腔医学杂志》2017年04期 　论文类型：期刊论文

【摘要】：目的评价烧结次数和渐变厚度及其交互性对椅旁计算机辅助设计与制作(CAD/CAM)二硅酸锂玻璃陶瓷贴面不同部位颜色的影响。方法在标准中切牙模型上制备贴面修复模型,用椅旁扫描仪采集光学印模,椅旁CAD/CAM系统制作24个二硅酸锂玻璃陶瓷贴面样本共4组(n=6),初次结晶组为对照组S0,其余按上釉烧结次数依次为S1、S2、S3组。使用Vita easyshade电子比色仪测定每个贴面的色彩参数L、C、H、a、b,用SAS 9.1.3统计软件采用重复测量多因素方差方法分析不同烧结次数以及不同部位厚度间各颜色指标的差异性。最后扫描电镜(SEM)观察每组贴面的晶体排列和致密度。结果随着烧结次数增加,试件的L值总体呈减小趋势(P0.05)。C和b的烧结次数有统计学意义(P0.05),其中,除S2组与S3组之间差异无统计学意义外(P0.05),其余各组之间的两两比较差异均有统计学意义(P0.05)。SEM观察发现二硅酸锂晶体随着烧结次数增加,晶体变大,晶体间的孔隙变小,晶体间的锁结变得更为紧密。结论上釉次数和厚度及其交互性对二硅酸锂玻璃陶瓷的色相、明度、彩度均存在影响。
[Abstract]:Objective to evaluate the sintering times and gradient thickness and interactivity of chairside computer aided design and manufacture (CAD/CAM) effect of two lithium disilicate ceramic veneer color for different parts. The preparation method in the incisor veneer model standard model, with the chair side scanner optical impression, chairside CAD/CAM system produced 24 two lithium silicate glass ceramic veneer samples were divided into 4 groups (n=6), primary crystallization group S0, according to the number of remaining glazing and sintering were S1, S2, S3 group. The color parameters of L, using the Vita easyshade determination of each veneer electronic colorimeter C, H, a, B, the difference analysis of different sintering times and different parts the thickness of each color index using SAS 9.1.3 statistical software using repeated measure variance method. Finally, scanning electron microscopy (SEM) observation of each veneer crystal arrangement and density. With the increase in the number of the sintered specimens, the total value of L The body was decreased with statistical significance (P0.05) and B.C (P0.05), the number of firing, in addition there was no significant difference between S2 group and S3 group (P0.05), other groups between 22 there were significant differences (P0.05) were observed in two.SEM lithium silicate crystal crystal with sintering times increasing. Larger, smaller pores between the crystals, locking between crystals become more closely. Conclusion the number and thickness of glaze and its interaction with two lithium silicate glass ceramics hue, lightness and chroma are affected.

【作者单位】：广西医科大学附属口腔医院修复科;广西医科大学附属口腔医院修复科技工制作室;广西医科大学附属口腔医院儿童牙病科;
【基金】：广西医科大学青年基金(GXMUYSH201523)~~
【分类号】：R783.1

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