目的:为了确定用于制造植入物支撑的修复体的不同CAD/CAM材料之间的表面特性(表面粗糙度和接触角)是否存在任何差异,遵循制造商提供的所有材料准备方案。
方法:一百四十四个标本分为六组:RBC(树脂基复合材料),PMMA(聚甲基丙烯酸甲酯),PEEK(聚醚醚酮),ZP(氧化锆抛光),ZG(氧化锆釉面)和CoCr4(CoCr4合金)。实验部分包括表面粗糙度(SR)和水接触角(WCA)分析,用原子力显微镜(AFM)和扫描电子显微镜(SEM)观察表面形貌。数据使用Kruskal-Wallis检验和Dunn的事后分析进行分析,使用Spearman秩相关系数检验测量值之间的相关性,所有数据均以平均值±SD表示.
结果:与其他组相比,ZG标本明显更粗糙(p≤0.05)。WCA测量显示ZG组的平均值显着降低(p≤0.05),与PEEK和CoCr4相反,观察到明显更高的平均值,与其他组相比(p≤0.05)。SR和WCA之间存在中度负相关(ρ=-0.41)。AFM3D和SEM2D图像显示了所有材料的或多或少的异质表面。
结论:测试材料组之间的表面粗糙度和接触角存在统计学上的显着差异。测试材料组的表面粗糙度与接触角之间存在中度负相关。
结论:这项研究使我们更好地了解了所研究材料的物理化学特性对其表面性能的影响,并为未来的研究提供了有用的知识,以了解材料在体内条件下的行为,当涉及到与表面质量相关的特征问题时,如微生物粘附,腐蚀,磨损,生物相容性和美学。
OBJECTIVE: To determine if there are any differences in surface characteristics (surface roughness and contact angle) among different CAD/CAM materials indicated for fabricating implant-supported restorations, following all the material preparation protocols provided by the manufacturer.
METHODS: One-hundred forty-four specimens were divided into six groups: RBC (resin-based composite), PMMA (polymethyl methacrylate), PEEK (polyether ether ketone), ZP (zirconia polished), ZG (zirconia glazed) and CoCr4 (CoCr4 alloy). The experimental part included surface roughness (SR) and contact angle of water (WCA) analyses, fulfilled with Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) view of surface topography. The data were analyzed using Kruskal-Wallis test with a Dunn\'s post hoc analysis, the correlation between measurements was tested using Spearman\'s rank correlation coefficient and all data were presented as mean ± SD.
RESULTS: ZG specimens were significantly rougher compared to other groups (p ≤ 0.05). The WCA measurements revealed significantly lower mean values in ZG group (p ≤ 0.05), contrary to PEEK and CoCr4 , where significantly higher mean values were observed, compared to other groups (p ≤ 0.05). There exist a moderate negative correlation between the SR and WCA (ρ = -0.41). AFM 3D and SEM 2D images presented more or less heterogeneous surface of all materials.
CONCLUSIONS: There were statistically significant differences in surface roughness and contact angle among tested material groups. Moderate negative correlation was found between surface roughness and contact angle of tested material groups.
CONCLUSIONS: The
study gives us a better understanding of influence of physicochemical characteristics of investigated materials on their surface properties and provides useful knowledge for future researches in a view of material\'s behavior under in vivo conditions, when it comes to a question of features related to surface quality, such as microbial adhesion, corrosion, wear, biocompatibility and esthetics.