Department of Prosthodontics, Faculty of Health, School of Dentistry, Witten/Herdecke University.
Private Practice.
Dent Mater J. 2024 Sep 28;43(5):621-628. doi: 10.4012/dmj.2023-234. Epub 2024 Aug 30.
This study investigates the surface quality and bacterial adhesion properties of various dental materials, including indirect composites, veneering composites, direct composites, polyether ether ketone (PEEK), and two millable polymethyl methacrylate (PMMA). Material specimens were processed following manufacturer instructions, initially evaluated for surface roughness and Streptococcus sanguinis (S. sanguinis) adhesion. Subsequently, toothbrushing simulation was employed to simulate aging, and changes in material surfaces were assessed via roughness measurements and bacterial adhesion testing. Prior to simulated aging, direct and indirect composites exhibited the lowest roughness values. However, after the simulated toothbrushing, veneering composites displayed the highest roughness levels. Both PMMA materials demonstrated the highest S. sanguinis adhesion levels, both before and after artificial aging. Interestingly, the indirect composite material showed a reduction in bacterial adhesion following toothbrushing simulation. Surprisingly, this study did not reveal a clear correlation between roughness and bacterial adhesion.
本研究调查了各种牙科材料的表面质量和细菌粘附特性，包括间接复合材料、贴面复合材料、直接复合材料、聚醚醚酮（PEEK）和两种可铣削的聚甲基丙烯酸甲酯（PMMA）。根据制造商的说明处理材料样本，首先评估表面粗糙度和血链球菌（S. sanguinis）粘附。随后，采用刷牙模拟来模拟老化，并通过粗糙度测量和细菌粘附测试评估材料表面的变化。在模拟老化之前，直接和间接复合材料表现出最低的粗糙度值。然而，在模拟刷牙后，贴面复合材料显示出最高的粗糙度水平。两种 PMMA 材料均表现出最高的 S. sanguinis 粘附水平，无论是在人工老化之前还是之后。有趣的是，在刷牙模拟后，间接复合材料的细菌粘附减少。令人惊讶的是，本研究并未发现粗糙度和细菌粘附之间有明显的相关性。
