Effect of enamel morphology on nanoscale adhesion forces of streptococcal bacteria : An AFM study

摘要: Summary We explore the influence of enamel surface morphology on nanoscale bacterial adhesion forces. Three dimensional characteristics slices, which were treated with phosphoric acid (for 0 s, 5 s, 10 s, 20 s, and 30 s), acquired. Adhesion forces three initial colonizers (Streptococcus oralis, Streptococcus sanguinis, mitis) two cariogenic strains mutans sobrinus) etched surfaces determined. Comparison was made by using probe method under atomic force microscope (AFM) in buffer. The results showed that significantly altered etching treatment. The roughness, peak-to-valley height, valley-to-valley width depth profile, area, volume increased linearly exposure time, reached maximum at 30s, respectively. different accordingly time. S. mitis, mutans, sobrinus values 0.81 nN, 0.84 nN, 0.73 nN, 0.64 nN for 20s, respectively, whereas sanguinis 10s (1.28nN), dropped coarser surfaces. In conclusion, micro-scale may alter direct bacteria. And there be a threshold roughness surface. SCANNING 9999:1–9, 2015. © 2015 Wiley Periodicals, Inc.