不同表面处理对椅旁瓷块CERECBlocs贴面色彩的影响

发布时间：2018-07-18 07:25

【摘要】：背景:椅旁计算机辅助设计/计算机辅助制作(computer aided design/computer aided manufacture,CAD/CAM)系统制作瓷贴面方便快捷,然而贴面切削后直接黏固色彩还原不理想,常需要经过各种表面处理获得理想的色彩效果。目的:研究不同表面处理对椅旁CEREC Blocs贴面色彩的影响及其与牙齿的颜色匹配性。方法:选取离体新鲜人上颌中切牙5颗,进行牙体预备。椅旁CAD/CAM制作0.6 mm的CEREC Blocs瓷贴面试件,共25个,随机分组,对照组不做任何处理;其余4组试件分别进行抛光、上釉、抛光上釉、上釉染色处理,选择离体牙和贴面试件唇面中1/3为测量目标区域,用Shade Eye NCC电子比色仪测量试件色彩参数L*a*b*值,计算与离体牙的色差(?E),SPSS 19.0软件对数据进行统计学分析。结果与结论:1与对照组相比,上釉组、抛光上釉组、上釉染色组L*值下降(P0.05),上釉染色组L*值最低;各组间a*、b*值比较差异无显著性意义(P0.05);2与对照组相比,上釉组、抛光上釉组、上釉染色组色差ΔE值明显减小(P0.05),其中上釉染色组色差最小。与对照组相比,上釉组、抛光上釉组、上釉染色组?L*值明显减小(P0.05),上釉染色组?L*值最低。与对照组相比,仅上釉染色组?b*值明显减小(P0.05)。各组间?a*值比较差异无显著性意义(P0.05);3结果表明,通过上釉染色处理,椅旁CEREC Blocs贴面可取得满意的色彩效果。
[Abstract]:Background: the (computer aided design/computer aided manufacture / CAD / CAM system beside the chair is convenient and fast in making porcelain veneer. However, it is not ideal to restore the color directly after veneer cutting, so it is often needed to obtain ideal color effect through various surface treatments. Aim: to study the effect of different surface treatments on the color of CEREC Blocs veneer beside the chair and its color matching with teeth. Methods: 5 fresh human maxillary central incisors were selected for tooth preparation. By the chair, CAD / CAM made 0.6 mm CEREC Blocs veneer, 25 samples were randomly divided into two groups, the control group did not do any treatment, the other 4 groups of specimens were polished, glazed, and stained with glaze. A third of the labial surface was selected as the target area. The color parameters of the sample were measured by Shade Eye NCC electronic colorimetry. The color difference (E) and SPSS 19.0 of the tooth were calculated and analyzed by SPSS 19.0 software. Results compared with the control group, the L* value of glaze group, polished glaze group and glaze dyeing group decreased (P0.05), and that of glazed staining group was the lowest (P0.05), but there was no significant difference between the two groups (P0.05). The 螖 E value of the glaze dyeing group was significantly decreased (P0.05), and the glaze dyeing group had the smallest color difference. Compared with the control group, the L* value of glaze group, polished glaze group and glaze dyeing group decreased significantly (P0.05), while the L* value of glaze dyeing group was the lowest. Compared with the control group, only glaze staining group significantly decreased the value of B * (P0.05). There was no significant difference between each group (P0.05). The results showed that CEREC Blocs veneer beside the chair could obtain satisfactory color effect by glazing dyeing.
【作者单位】：南京医科大学口腔疾病研究江苏省重点实验室南京医科大学附属口腔医院综合科;南京医科大学附属口腔医院义齿研制中心;
【基金】：江苏高校优势学科建设工程资助项目(2014-37)~~
【分类号】：R783.1

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