摘要
目的:测定不同核瓷厚度的Cercon CAD/CAM二氧化锆全瓷和IPS e.max热压铸造全瓷修复体的色度值、透射率和透明度。方法:制作不同核瓷层次厚度(0.5 mm,0.7 mm和0.9 mm)的Cercon CAD/CAM二氧化锆全瓷和IPS e.max热压铸造全瓷的试件,采用Minolta(CR-321)色度计和PERKIN ELMER分光光度计来测量试件的色度值、透明度及透射率。结果:在白色的背景下,两种全瓷材料的核瓷试件都随着其瓷层厚度的增加,L~*值逐渐降低,a~*值、b~*值则逐渐增加,TP值逐渐减小,两邻近厚度核瓷之间的色差有逐渐变小的趋势,并且其色差(△E)均大于1.5。不同材料相同厚度情况下,Cercon二氧化锆全瓷核瓷的L~*值皆小于3种不同透光率的IPS e.max热压铸造全瓷核瓷的L~*值,3种不同透光率的IPS e.max热压铸造全瓷核瓷的TP值远远大于Cercon二氧化锆核瓷;相同厚度下Cercon二氧化锆全瓷较IPS e.max热压铸造全瓷核瓷偏红色,IPS e.max热压铸造全瓷则较Cercon二氧化锆全瓷偏黄色。结论:核瓷厚度对全瓷材料的颜色和透明度会产生影响,在制作修复体时应根据需要选择不同种类和厚度的核瓷来与天然牙相匹配,以获得色泽逼真、患者满意的理想修复效果。
Objective:Determination the chroma values,transmittance and transparency of different nuclear porcelain porcelain layer thickness of Cercon CAD/CAM zirconia and IPS e.max hot die-cast porcelain all-ceramic restorations.Methods:Making different nuclear porcelain hierarchy thickness(0.5 mm,0.7 mm and 0.9 mm)of Cercon CAD/CAM zirconia and IPS e.max casting porcelain test piece,and using a Minolta(CR-321)colorimeter and PERKIN ELMER spectrophotometer to measure the chromaticity values,transparency and transmittance of the test piece.Results:With the increasing thickness of core of ceramic material,its lightness value decreased and a~*,b~* value increased.With the same thickness of core,two ceramic materials’ chroma values were different.Cercon zirconia was red compared with IPS e.max Press,and IPS e.max Press cast porcelain was yellow compared with Cercon zirconia.Conclusion:The core material thickness will effect on the material optical properties.When restoration is made,different material and different thickness of core should be chosen for best effect.
作者
韩影
白乐康
邵龙泉
HAN Ying;BAI Le-kang;SHAO Long-quan(Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi’an Jiaotong University,Shaanxi Xi’an 710004, China;Nan Fang Hospital, Southern Medical University,Guangdong Shenzhen 510515,China)
出处
《临床口腔医学杂志》
2019年第7期391-394,共4页
Journal of Clinical Stomatology
基金
陕西省卫生厅科研项目(2014D59)
关键词
全瓷
厚度
色度值
透射率
透明度
All-ceramic
Thickness
Chroma values
Transmittance
Transparency
