Ozgünaltay G, Yazici A R, Görücü J
Department of Conservative Dentistry, Hacettepe University, Faculty of Dentistry, Ankara, Turkey.
J Oral Rehabil. 2003 Feb;30(2):218-24. doi: 10.1046/j.1365-2842.2003.01022.x.
The purpose of this study was to evaluate the effect of various finishing and polishing procedures on the surface roughness of three new tooth-coloured restorative materials. The materials included a hybrid composite resin (Filtek Z250), a packable composite resin (Filtek P60), and an ormocer (organically modified ceramic) (Definite). Thirty-two specimens of each material were prepared and randomly divided into four finishing and polishing groups (n = 8): (i) diamond bur/silicone polishers, (ii) diamond bur/Sof-Lex discs, (iii) carbide bur/silicone polishers, (iv) carbide bur/Sof-Lex discs. Average surface roughness (Ra) in micrometers was measured with a Mitutoyo Surftest-402 Surface Roughness Tester and the data compared using anova, at P < or = 0.05. Surface topography was also assessed using the scanning electron microscope (s.e.m) from samples of each group. The Mylar strip produced the smoothest surface and finishing/polishing procedures; (ii) and (iv) were significantly smoother than (i) and (iii). The lowest variability in initial surface roughness between materials was also observed with ormocer group.
本研究的目的是评估各种修整和抛光程序对三种新型牙齿颜色修复材料表面粗糙度的影响。这些材料包括一种混合复合树脂（Filtek Z250）、一种可压实复合树脂（Filtek P60）和一种有机陶瓷（ormocer）（Definite）。每种材料制备32个样本，并随机分为四个修整和抛光组（n = 8）：（i）金刚石车针/硅胶抛光器，（ii）金刚石车针/Sof-Lex盘，（iii）硬质合金车针/硅胶抛光器，（iv）硬质合金车针/Sof-Lex盘。使用Mitutoyo Surftest-402表面粗糙度测试仪测量以微米为单位的平均表面粗糙度（Ra），并使用方差分析比较数据，P≤0.05。还使用扫描电子显微镜（s.e.m）对每组样本的表面形貌进行评估。聚酯薄膜条产生了最光滑的表面以及修整/抛光程序；（ii）和（iv）组比（i）和（iii）组明显更光滑。在有机陶瓷组中还观察到材料之间初始表面粗糙度的变异性最低。
