6种光固化复合树脂的半透性、乳光性及荧光性研究  

Translucency,opalescence and fluorescence properties of six light-cured resin composites

作　　者：杨琳[1] 陈豆豆[1] 张君平[1] 李继遥[1] 

机构地区：[1]四川大学华西口腔医院牙体牙髓科,成都610041

出　　处：《实用口腔医学杂志》2016年第1期19-23,共5页Journal of Practical Stomatology

摘　　要：目的:体外测定6种光固化复合树脂的半透性、乳光性及荧光性参数。方法:将6种光固化复合树脂,包括Filtek Supreme XT-YT(XT)、Filtek Supreme XT-A3B(3M)、Clearfil Majesty-A3(MJ)、Gradia Direct-A3(GC)、Venus-A3(VE)、Charisma Diamond-A3(CA)制备成直径9 mm,厚度为2.0 mm的盘状树脂块。采用PR-650光谱扫描色度仪,测量并计算样本半透性参数(TP值)、乳光参数(OP值)及荧光参数(FL值),并绘制荧光反射曲线。结果:TP值,除XT与MJ外,余下树脂均在天然牙范围内;OP值,仅XT在天然牙牙釉质范围内;FL值,XT最接近天然牙;GC、MJ、VE、CA的荧光峰值波长在天然牙范围内,峰值均高于天然牙;样本的TP、OP正相关(r=0.85,P<0.05),而TP与FL、OP与FL的相关均无统计学意义(P>0.05)。结论:现常用树脂能较好模拟天然牙光学特性,但在乳光性方面与天然牙尚有差异。Objective： To evaluate the translucency, opalescence and fluorescence reflection of 6 light-cured resin composites. Methods： Disks of 6 resin composites including Filtek Supreme XT-YT（ XT）, Fihek Supreme XT-A3 B （3M）, Clearfil Majesty-A3 （M J）, Gradia Direct-A3 （GC） , Venus-A3 （VE） and Charisma Diamond-A3 （CA）were prepared in the diameter of 9 mm with the thickness 2.0 mm. PR-650 spectral scanning colorimeter was used to measure and eaculate translucency parameters（TP）, opal- escence parameter（OP） and fluorescence reflection （FL） and to draw the fluorescence reflection curves. Results： Except XT and MJ, TP value of other resin composites were in the range of natural tooth. Only OP value of XT was in the range of natural tooth en- amel. FL value of XT was close to that of natural tooth dentin. Fluorescent peak wavelength of GC, M J, VE and CA were in the range of natural tooth,but fluorescent peak height was higher than that of natual tooth. TP was positively correlated with OP （ r = 0. 85, P 〈 0. 05 ）. There was no statistic correlation between TP and FL, between OP and FL. Conclusion ： The 6 resin composites can simulate optical property of natual tooth, but the opalescence of resin composites is defective.

关 键 词：光固化复合树脂 半透性参数 乳光参数 荧光参数 

分 类 号：R783.1[医药卫生—口腔医学]