Karacolak Gamze, Turkun L Sebnem, Boyacioglu Hayal, Ferracane Jack L
Department of Restorative Dentistry, School of Dentistry, Ege University.
Department of Statistics, Faculty of Science, Ege University.
Dent Mater J. 2018 Mar 30;37(2):206-213. doi: 10.4012/dmj.2017-032. Epub 2017 Nov 23.
Determining the energy transferred at the bottom of eleven bulk-fill resin composites, comparing top and bottom microhardness's and evaluating the correlation between microhardness and radiant energy were aimed. Samples were placed over the bottom sensor of a visible light transmission spectrophotometer and polymerized for 20 s. The bottom and top Knoop microhardness were measured. Paired t-test and correlation analysis were used for statistics (p≤0.05). In all groups, the bottom radiant energy decreased significantly with increasing thickness. For groups of Aura 2 mm, X-tra Fil 2 and 4 mm, SDR 2 and 4 mm, X-tra Base 2 mm no significant difference was found between top and bottom microhardness. For the bottom levels of Aura, X-tra Fil, Filtek Bulk-Fill Posterior, SDR, X-tra Base groups no significant difference was found between the microhardness's of 2 and 4 mm thicknesses. For X-tra Fil, Tetric Evo Ceram Bulk-Fill, Filtek Bulk-Fill Flowable and Z100 groups radiant energy affected positively the microhardness.
本研究旨在测定11种大块充填树脂复合材料底部的能量传递，比较其顶部和底部的显微硬度，并评估显微硬度与辐射能量之间的相关性。将样品置于可见光透射分光光度计的底部传感器上并聚合20秒。测量底部和顶部的努氏显微硬度。采用配对t检验和相关性分析进行统计学处理（p≤0.05）。在所有组中，底部辐射能量随厚度增加而显著降低。对于Aura 2 mm、X-tra Fil 2和4 mm、SDR 2和4 mm、X-tra Base 2 mm组，顶部和底部显微硬度之间未发现显著差异。对于Aura、X-tra Fil、Filtek Bulk-Fill Posterior、SDR、X-tra Base组的底部水平，2 mm和4 mm厚度的显微硬度之间未发现显著差异。对于X-tra Fil、Tetric Evo Ceram Bulk-Fill、Filtek Bulk-Fill Flowable和Z100组，辐射能量对显微硬度有积极影响。
