Nair Veena S, Sainudeen Shan, Padmanabhan Prabeesh, Vijayashankar L V, Sujathan Unu, Pillai Rajesh
Department of Cons and Endo, M.R. Ambedkar Dental College and Hospital, Bangalore, Karnataka, India.
Department of Cons and Endo Cos and Endo, PMS Dental College, Golden Hills, Thiruvananthapuram, Kerala, India.
J Conserv Dent. 2016 Jan-Feb;19(1):91-5. doi: 10.4103/0972-0707.173208.
This study aims to investigate the effects of finishing and polishing procedures on four novel resin composites using three-dimensional optical profilometer.
Four composites classified according to their filler size, were selected: Filtek™ Z350 XT/Nanofill (3M™ ESPE™), Esthet-X HD/Hybrid (Dentsply Caulk), Te Econom/Microfill (Ivoclar Vivadent(®)), Tetric EvoCeram(®) /Nanohybrid (Ivoclar Vivadent(®)). Composite specimens were made in Plexiglass mold and polished with Soflex (3M ESPE), Enhance + Pogo (Dentsply Caulk). Both the systems were used according to the manufacturers' instructions, and the polished surfaces were assessed with an optical profilometer.
Kruskal-Wallis test and further pairwise comparison were performed by Mann-Whitney test.
The smoothest surfaces for all the resin composites tested were obtained from the Mylar strip; statistically significant differences were observed among them (P = 0.001). The order of composites was ranked from the lowest to highest surface roughness; Filtek Z350 XT < Te Econom < Tetric EvoCeram < Esthet XHD. Pairwise multiple comparison with Mann-Whitney test showed Filtek Z350 to have the smoothest surface and the least with Teric EvoCeram. Among the polishing systems, Soflex showed the smoothest surface and was significantly different from Pogo (P = 0.046).
The effectiveness of the polishing systems seems to be dependent on the material used, treatment modality and also on the filler particle size.
本研究旨在使用三维光学轮廓仪研究修整和抛光程序对四种新型树脂复合材料的影响。
根据填料尺寸选择了四种复合材料：Filtek™ Z350 XT/纳米填料（3M™ ESPE™）、Esthet-X HD/混合填料（登士柏卡沃）、Te Econom/微填料（义获嘉伟瓦登特（®））、Tetric EvoCeram(®)/纳米混合填料（义获嘉伟瓦登特（®））。在有机玻璃模具中制作复合材料试样，并用Soflex（3M ESPE）、Enhance + Pogo（登士柏卡沃）进行抛光。两种系统均按照制造商说明使用，并用光学轮廓仪评估抛光表面。
采用Kruskal-Wallis检验，并通过Mann-Whitney检验进行进一步的两两比较。
所有测试树脂复合材料的最光滑表面均由聚酯薄膜条获得；它们之间观察到统计学显著差异（P = 0.001）。复合材料表面粗糙度从低到高的顺序为：Filtek Z350 XT < Te Econom < Tetric EvoCeram < Esthet XHD。Mann-Whitney检验的两两多重比较显示，Filtek Z350表面最光滑，Teric EvoCeram表面最不光滑。在抛光系统中，Soflex表面最光滑，与Pogo有显著差异（P = 0.046）。
抛光系统的有效性似乎取决于所用材料、处理方式以及填料粒径。
