4种氧化锆类全瓷修复体光学性能评价  

Experimental study on the optical properties of different-translucency zirconia-ceramic restorations

作　　者：邹妍 熊佩文 朱洪水[1] ZOU Yan;XIONG Pei-wen;ZHU Hong-shui(Affiliated Stomatological Hospital of Nanchang University,Key Laboratory of Oral Biomedicine.Nanchang 330006,Jiangxi Province,China)

机构地区：[1]南昌大学附属口腔医院·江西省口腔生物医学重点实验室,江西南昌330006

出　　处：《上海口腔医学》2023年第2期154-157,共4页Shanghai Journal of Stomatology

摘　　要：目的:使用2种不同透明性氧化锆及饰瓷材料制作4种氧化锆类全瓷修复体,比较其光学性能。采用透明性(TP)及色差值(△E)为评价指标,为临床修复偏灰色基牙提供参考。方法:使用2种不同透明性A2色二氧化锆(贝特福美学全锆、Cercon低透氧化锆)及配套体瓷粉,制作4组氧化锆类全瓷试件,包括高透明性二氧化锆烧结牙本质瓷(A组)、低透明性二氧化锆烧结牙本质瓷(B组)、高透明性二氧化锆烧结不透明瓷及牙本质瓷(C组)和低透明性二氧化锆烧结不透明瓷及牙本质瓷(D组)。试件尺寸为14 mm×14 mm×1.5 mm,每组6个,共24个。用Shade Eye NCC色度计测色仪,分别测量试件在黑白背景上的颜色参数(计算TP值)、钛合金和A3色光固化复合树脂上的颜色参数(计算△E值)。采用SPSS 17.0软件包进行统计学分析。结果:4组试件的TP值不同,在2种背景下的△E值也不同,具有统计学差异(P<0.05),TP值由小到大依次为D组<C组<B组<A组,不透明瓷的使用明显降低透明性;△E值由小到大依次为D组<C组<B组<1.5<2<A组,A组的色差值不能被临床接受。结论:低透明性二氧化锆烧结高透明性饰瓷的修复体透明性较高,且修复后的色差值不易被肉眼察觉,可用于偏灰色基牙的修复。PURPOSE:The purpose of this in vitro study was to measure the color difference(△E)on titanium alloy background and translucency parameter(TP)of four kinds of zirconia-based all-ceramic specimens,providing a clinical reference for restoring grayish abutment.METHODS:Four groups with a total of 24 ceramic specimens were fabricated to a final specimen dimension of 14 mm×14 mm×1.5 mm,two kinds of zirconia with different translucency(Beitefu high-translucency,Cercon low-translucency)and their corresponding body porcelain at the shade of A2 were used as followed:high-translucency zirconia sintered dentine porcelain(Group A),low-translucency zirconia sintered dentine porcelain(Group B),high-translucency zirconia sintered opaque and dentine porcelain(Group C),low-translucency zirconia sintered opaque and dentine porcelain(Group D).The color parameters of the specimens under two backgrounds(titanium alloy and shade A3 light-activated resin-based composite)were measured by Shade Eye NCC colorimeter,then the△E value was determined by the relevant equations.The color parameters under black and white background were measured,and TP value was calculated.The experimental data were analyzed with SPSS 17.0 software package.RESULTS:There was significant difference of the TP value and the△E value among four groups specimens(P<0.05),the TP value was arranged as follows:group D<group C<group B<group A.The specimen used with opaque porcelain showed significantly reduced translucency.The△E value was arranged as follows:group D<group C<group B<1.5<2<group A,the△E value of group A cannot be accepted in clinic.CONCLUSIONS:The restoration of low-translucency zirconia sintered translucency veneering ceramic has better translucency,with value of△E<1.5 when used on the grayish abutment,which has a good aesthetic performance.

关 键 词：二氧化锆 全瓷 透明性 色差 

分 类 号：R783.1[医药卫生—口腔医学]