Turgut Sedanur, Bağış Bora, Korkmaz Fatih Mehmet, Tamam Evsen
Assistant Professor, Department of Prosthodontics, Faculty of Dentistry, Karadeniz Technical University, Trabzon, Turkey.
Associate Professor, Department of Prosthodontics, Faculty of Dentistry, Izmir Katip Celebi University, Izmir, Turkey.
J Prosthet Dent. 2014 Sep;112(3):618-24. doi: 10.1016/j.prosdent.2014.04.001. Epub 2014 May 17.
Surface treatments may affect the optical properties of ceramic veneers before cementation.
The purpose of this study was to evaluate whether various surface treatments affect the optical properties of different types of ceramic veneers.
Disk-shaped ceramic veneers (N=280) were prepared from the IPS e.max Press, e.max CAD, Empress Esthetic, e.max Ceram, and Inline ceramic systems with 0.5-mm and 1.0-mm thicknesses. The ceramics were divided into 4 groups: no surface treatments; etched with hydrofluoric acid; airborne-particle abraded with 30-μm Al2O3; and irradiated with erbium:yttrium-aluminum-garnet laser. A translucent shade of resin was chosen for cementation. Color parameters were examined with a colorimeter. Statistical analyses were done with 3-way ANOVA and the Bonferroni test (P=.05).
Significant interactions were noted between the surface treatments, ceramic type, and thickness for ΔE values (P=.01), and no significant interactions were noted for L* (P=.773), a* (P=.984), and b* (P=.998). The greatest color change occurred after airborne-particle abrasion with 0.5-mm-thick e.max Press (2.9 ΔE). Significant differences in ΔE values were found among the hydrofluoric acid, airborne-particle abrasion, and laser groups for 0.5-mm-thick ceramics, except IPS Inline, and among the hydrofluoric acid, airborne-particle abrasion, and laser groups for 1.0-mm-thick ceramics, except Empress Esthetic ceramics.
The color change of the ceramics increased after the surface treatments, particularly as the ceramics became thinner.
表面处理可能会在粘结前影响陶瓷贴面的光学性能。
本研究的目的是评估各种表面处理是否会影响不同类型陶瓷贴面的光学性能。
从IPS e.max Press、e.max CAD、Empress Esthetic、e.max Ceram和Inline陶瓷系统制备了厚度为0.5毫米和1.0毫米的圆盘形陶瓷贴面（N = 280）。陶瓷被分为4组：未进行表面处理；用氢氟酸蚀刻；用30μm Al2O3进行空气颗粒研磨；用铒：钇铝石榴石激光照射。选择一种半透明色调的树脂用于粘结。用色度计检查颜色参数。采用三因素方差分析和Bonferroni检验进行统计分析（P = 0.05）。
对于ΔE值，表面处理、陶瓷类型和厚度之间存在显著交互作用（P = 0.01），而对于L*（P = 0.773）、a*（P = 0.984）和b*（P = 0.998）则未发现显著交互作用。最大的颜色变化发生在对0.5毫米厚的IPS e.max Press进行空气颗粒研磨后（2.9 ΔE）。对于0.5毫米厚的陶瓷，除IPS Inline外，氢氟酸、空气颗粒研磨和激光组之间的ΔE值存在显著差异；对于1.0毫米厚的陶瓷，除Empress Esthetic陶瓷外，氢氟酸、空气颗粒研磨和激光组之间的ΔE值也存在显著差异。
表面处理后陶瓷的颜色变化增加，尤其是随着陶瓷变薄。
