复合树脂填料组成对抛光后表面粗糙度的影响

目的：观察复合树脂抛光后组成成分对其表面粗糙度的影响。方法：选择三个厂家不同组成成分和工艺配置的8种复合树脂，制作表面统一基线的试样，用Sof-Lex系列抛光，采用表面粗糙度仪（Surftest SJ-401）检测抛光后树脂的表面粗糙度（Ra值）。结果：（1）同属较大颗粒玻璃填料的复合树脂（AP-X、Quixfil和 TPH3 Spectrum）抛光后表面粗糙度较小粒度和纳米工艺的石英填料复合树脂（Z250、P60、P90和Z350）高；（2）同一厂家的石英混合填料复合树脂与石英纳米树脂抛光后的表面粗糙度相同；（3）复合树脂在垂直于抛光方向上获得的表面粗糙度要比平行于抛光方向的粗糙度高。各树脂Ra值经One-Way ANOVA分析和配对 t检验，P＜0．05。结论：填料的成分和粒度会影响复合树脂抛光后表面的粗糙程度，抛光方向也是重要的影响因素。

Effects of Filler Components on Surface Roughness of Composite Resin Materials after Polishing

Objective ：To evaluate fillers like quartz ,nano-silica and glass in resin composites on surface roughness af-ter polishing .Methods ：8 commercial resin composites with different components and technique were studied in this study .Atter consistent baseline had obtained ,the specimens were polished by use of abrasive disks .Ra values were tested by surface profilometer （Surftest SJ-401） .Results：（1） Surface roughness of AP-X ,Quixfil and TPH3 with large glass fillers was greater than composites with smaller quartz and nano fillers like Z 250 ,P60 ,P90 ,Z350 .（2）Composites with quartz and nano fillers from the same company had the similar surface roughness .（3）Ra value from the perpendic-ular direction was greater than parallel direction .Conclusion：Factors like filler component ,particle size and polishing di-rection can influent the surface roughness after polishing .