Department of Prosthodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey.
Aust Dent J. 2013 Jun;58(2):183-91. doi: 10.1111/adj.12065.
This study evaluated the effect of air-particle abrasion with different particle sizes on the surface roughness and phase transformation of yttria-stabilized tetragonal zirconia ceramics (Y-TZP).
Eighty-four Y-TZP discs of 15 mm diameter and 1.0 mm thickness were fabricated. The samples were divided into four groups (n = 21): (1) air-particle abrasion with 30 μm CoJet sand blast coating agent (CoJet, 3M ESPE); (2) 50 μm Al2O3 particles; (3) 110 μm Al2O3 particles; and (4) 250 μm Al2O3 particles. Each group was further divided into three subgroups each (n = 7) and treated for 5 seconds, 15 seconds and 30 seconds. Mean surface roughness was determined using a profilometer. The surfaces were analysed with a scanning electron microscope. XRD analysis was employed and the relative amount of the monoclinic phase was calculated. The results were statistically analysed by two-way analysis of variance (ANOVA, p < 0.05).
Air-particle abrasion with 250 μm Al2O3 particles for 30 seconds had the highest surface roughness (p < 0.001) and a significantly higher amount of monoclinic phase compared to air-particle abrasion with 30 μm, 50 μm and 110 μm particles (p < 0.001).
Duration and particle size of air-particle abrasion affects the roughness and phase transformation of Y-TZP. Longer treatment times with larger particles may result in degradation of material.
本研究评估了不同粒径的空气颗粒喷砂对氧化钇稳定四方氧化锆陶瓷（Y-TZP）表面粗糙度和相转变的影响。
制备了 84 个直径为 15mm、厚度为 1.0mm 的 Y-TZP 圆盘。将样品分为四组（n=21）：（1）用 30μm 的 CoJet 喷砂涂层剂（CoJet，3M ESPE）进行空气颗粒喷砂；（2）50μmAl2O3 颗粒；（3）110μmAl2O3 颗粒；和（4）250μmAl2O3 颗粒。每组进一步分为三个亚组（n=7），分别处理 5 秒、15 秒和 30 秒。使用轮廓仪测定平均表面粗糙度。用扫描电子显微镜分析表面。采用 XRD 分析并计算单斜相的相对量。用双因素方差分析（ANOVA，p＜0.05）对结果进行统计分析。
用 250μmAl2O3 颗粒进行空气颗粒喷砂 30 秒具有最高的表面粗糙度（p＜0.001），并且与用 30μm、50μm 和 110μm 颗粒进行空气颗粒喷砂相比，单斜相的量明显更高（p＜0.001）。
空气颗粒喷砂的持续时间和颗粒大小会影响 Y-TZP 的粗糙度和相转变。使用较大的颗粒进行较长的处理时间可能会导致材料降解。
