Yazkan B, Celik E U, Recen D
*Basak Yazkan, PhD, Pamukkale University, Faculty of Dentistry, Department of Restorative Dentistry, Kınıklı, Denizli, Turkey.
Esra Uzer Çelík.
Oper Dent. 2021 Sep 1;46(5):E240-E250. doi: 10.2341/20-195-L.
To compare the surface roughness and color stability of a novel alkasite with current direct restorative materials with and without an aging step.
Twenty-six specimens of each of the following materials were prepared: alkasite, ormocer, giomer, high-viscosity glass ionomer, glass carbomer, and nanohybrid composite (control). Half of the specimens in each group were stained, the other half of the specimens were aged and then stained. Color and surface roughness evaluations were conducted at baseline, after aging and after staining, using a dental spectrophotometer, and a three-dimentional (3D) noncontact optical profilometer, respectively. Statistical analyses were completed using one-way analysis of variance, post hoc Tukey test, and paired samples t-test.
At baseline and after aging, the surface of alkasite was found to be rougher than nanohybrid composite and ormocer surfaces (p<0.05). However, in terms of roughness increase caused by aging, ormocer, nanohybrid composite, and alkasite were affected in a similar way (p>0.05). In terms of color stability, alkasite was more colored than nanohybrid composite and ormocer (p<0.05), and performed similar to giomer (p>0.05).
The surface roughness and color stability characteristics of alkasite material was between composite resins and glass ionomer-based materials after aging.
比较一种新型碱硅石与现有直接修复材料在有无老化步骤情况下的表面粗糙度和颜色稳定性。
制备以下每种材料的26个样本：碱硅石、有机陶瓷、聚酸改性复合树脂、高粘度玻璃离子水门汀、玻璃卡波姆和纳米混合复合材料（对照）。每组样本的一半进行染色，另一半样本先老化然后染色。分别使用牙科分光光度计和三维（3D）非接触式光学轮廓仪在基线、老化后和染色后进行颜色和表面粗糙度评估。使用单因素方差分析、事后Tukey检验和配对样本t检验完成统计分析。
在基线和老化后，发现碱硅石的表面比纳米混合复合材料和有机陶瓷的表面更粗糙（p<0.05）。然而，就老化引起的粗糙度增加而言，有机陶瓷、纳米混合复合材料和碱硅石受到的影响方式相似（p>0.05）。在颜色稳定性方面，碱硅石比纳米混合复合材料和有机陶瓷颜色更深（p<0.05），与聚酸改性复合树脂表现相似（p>0.05）。
老化后，碱硅石材料的表面粗糙度和颜色稳定性特征介于复合树脂和玻璃离子基材料之间。
