Department of Fixed Prosthodontics, Dental Research Center, Nihon University School of Dentistry, Tokyo, Japan.
Acta Odontol Scand. 2009;67(5):313-20. doi: 10.1080/00016350903070911.
To evaluate the surface characteristics of indirect composites etched with acidulated phosphate fluoride (APF) solution. MATERIAL AND METHODS. APF solution was applied to specimens of six composite materials. The surface morphological change was measured with a confocal laser scanning microscope. Gloss measurement and scanning electron microscope (SEM) observation were also performed.
The APF-treated surface showed various patterns due to the difference in the filler incorporated in each composite. The surface properties could be evaluated precisely from the surface roughness parameters. The arithmetical mean deviation of roughness profile (Ra) parameter of the specimens treated with APF solution was higher than those of the specimens untreated with APF, except New Meta Color Infis (IF). The difference in etching influence of each composite material was shown conclusively in the maximum height of the profile (Rz) parameter. Gradia (GR) and Gradia Forte (GF) were etched three times more deeply than that of IF categorized microfilled composite. The mean width of the profile element (RSm) decreased significantly after APF treatment, except in IF. Gloss was reduced apparently in all materials, indicating that gloss reduction was sensitive to slight surface changes.
Specific filler particles of prosthodontic composite materials were etched by APF application. The surface roughness parameters, such as Rz and RSm, properly described various surface topographic features. Gloss was strongly correlated to surface roughness, as defined by these parameters, and especially to the initial change of surface roughness.
评价用酸性氟磷酸（APF）溶液酸蚀后的间接复合树脂的表面特性。
APF 溶液应用于 6 种复合材料的标本。用共焦激光扫描显微镜测量表面形貌变化。同时进行光泽度测量和扫描电子显微镜（SEM）观察。
APF 处理后的表面由于每种复合材料中所含填料的不同而呈现出不同的图案。表面粗糙度参数可以精确地评估表面性能。用 APF 溶液处理的标本的算术平均粗糙度（Ra）参数的表面粗糙度轮廓的均方根（Ra）高于未经 APF 处理的标本，除了 New Meta Color Infis（IF）。每个复合树脂材料的蚀刻影响的差异在轮廓最大高度（Rz）参数中得到了明确的显示。Gradia（GR）和 Gradia Forte（GF）的蚀刻深度比 IF 分类的微填充复合树脂深 3 倍。用 APF 处理后，除 IF 外，平均粗糙度轮廓要素宽度（RSm）显著减小。所有材料的光泽度明显降低，表明光泽度降低对表面细微变化敏感。
APF 的应用可使义齿复合树脂材料的特定填充颗粒被蚀刻。表面粗糙度参数，如 Rz 和 RSm，可很好地描述各种表面形貌特征。光泽度与这些参数定义的表面粗糙度密切相关，特别是与表面粗糙度的初始变化密切相关。
