背景:最近,通用的单阴影树脂复合材料在牙科市场上越来越多。其组成的改性可能会对其物理和表面特性产生无意影响,以及随后对其临床功能和寿命的决定性影响。因此,这项研究旨在评估不同的精加工和抛光(F/P)系统对表面粗糙度(Ra)的影响,表面光泽(GU),通用单色调红细胞的维氏显微硬度(VMH)。
方法:使用了四种商业RBC;通用的单色调RBC是Omnichroma,Charisma®DiamondONE,和VittraAPSUnique,和常规纳米复合材料Filtek™Z250XT用作对照。3个F/P系统是Sof-Lex™XT,Enhance®/PoGo®,和Diacomp®PlusTwist。对于所有RBC,总共160个圆盘用于3个F/P系统组(n=10)。F/P后,Ra,GU,和VMH进行了评估。使用P值<0.05的双向ANOVA分析数据。
结果:在四个红细胞和3F/P系统中发现了显着差异(p<.000)。Omnichroma显示最低的Ra和可接受的GU,但VMH最低。魅力表现出最高的Ra,可接受的GU,VMH。Vittra显示可接受的Ra,GU,VMH和Filtek显示了最高的GU,VMH,可接受的Ra
结论:尽管传统的纳米杂化红细胞(FiltekZ250XT)显示出更好的GU和VMH值,通用单阴影红细胞表现出可比的表面性质。Diacomp实现了最高的GU和VMH和最低的Ra,其次是Enhance和Soflex。
BACKGROUND: Recently, universal single-shade resin composites have become increasingly available in the dental market. The modification of their composition can have an inadvertent effect on their physical and surface properties, and subsequently determinantal effect on their clinical function and longevity. Therefore, this study aimed to evaluate the effect of different finishing and polishing (F/P) systems on surface roughness (Ra), surface gloss (GU), and Vickers microhardness (VMH) of universal single-shade RBCs.
METHODS: Four commercial RBCs were used; the universal single-shade RBCs were Omnichroma, Charisma® Diamond ONE, and Vittra APS Unique, and a conventional nanocomposite Filtek™ Z250 XT was used as a control. The 3 F/P systems were Sof-Lex™ XT, Enhance®/PoGo®, and Diacomp® Plus Twist. A total of 160 discs were used for the 3 F/P system groups for all RBCs (n = 10). After F/P, the Ra, GU, and VMH were assessed. The data were analyzed using 2-way ANOVA at p-value < 0.05.
RESULTS: Significant differences were found among the four RBCs and the 3 F/P systems (p < .000). Omnichroma showed the lowest Ra and acceptable GU, but the lowest VMH. Charisma showed the highest Ra, acceptable GU, and VMH. Vittra showed acceptable Ra, GU, and VMH and Filtek showed the highest GU, VMH, and acceptable Ra.
CONCLUSIONS: Although conventional nanohybrid RBC (Filtek Z250 XT) showed better GU and VMH values, the universal single-shade RBCs demonstrated comparable surface properties. The highest GU & VMH and lowest Ra were achieved by Diacomp followed by Enhance and Soflex.