IPS e.max瓷贴面颜色匹配性的临床研究

Evaluation of IPS e. max porcelain veneers on color matching in vivo

对符合纳入标准的32颗上前牙行瓷贴面修复。Olympus Crystaleye齿科比色仪测定基牙及瓷贴面粘接前后的L*、a*、b*值,分析L*、a*、b*、饱和度Cab值的变化并计算色差值。结果显示粘接后的瓷贴面复合体与粘接前试戴相比,L*值减小,a*、b*值增大,L*、a*值差异有统计学意义(P<0.05),粘接前后平均色差值为1.15 NBS;基牙与粘接后的瓷贴面复合体相比,粘接后瓷贴面复合体L*、a*、b*、Cab值增大,a*、b*、Cab值差异有统计学意义(P<0.05),粘接后与基牙之间的平均色差值为1.63 NBS。IPS e.max瓷贴面可恢复基牙的颜色,且粘接后颜色稳定,色差在临床可接受的范围内。IPS e.max瓷贴面修复系统是一种理想的前牙美容修复方式。

32 anterior teeth were veneered. The color parameters（L＊ ,a＊ ,b＊ ） of the abutment teeth and veneers before and after cementation were measured with Olympus Crystaleye. The L ＊ , a ＊ , b ＊ , color saturation（ Cab ） values of veneers and the abutment teeth were compared and analyzed afterwards, then color difference （ △ E） was calculated. The L＊ value decreased, and the values of a ＊ , b ＊ increased. The values of L ＊ , a ＊ showed significant differences （ P 〈 0.05 ） between before and after cementation. The average value of color difference was 1.15 NBS. Compared with the abutment teeth, the L＊ , a＊ , b ＊ , Cab values of the veneers after cementation were increasing, the values of a＊ , b ＊ , Cab showed significant differences （ P 〈 0.05 ）. The average value of color difference was 1.63 NBS. The IPS e. max ceramics could restore the color of the abutment teeth, as well as efiectively match the color of abutment teeth. The color change is considered to be within the clinically acceptable range. The IPS e. max porcelain veneer restoration system is an ideal choice for anterior aesthetic restoration.