The Studies on the adhesion behaviour of bacterial and algae and its ecological significance have been reviewed in this paper. All research indicated that the adhesion processes of bacterial and algae involved an inst...The Studies on the adhesion behaviour of bacterial and algae and its ecological significance have been reviewed in this paper. All research indicated that the adhesion processes of bacterial and algae involved an instantaneous reversible Phase and a time-dependent irreversible phase. The adhesion behaviour is basically controled by physico-chemical and biological forces and influenced by various environmental factors. The adhesion behaviour of bacterial and algae has important in freshwater ecosystem and its ecological significance implication is discussed in detail in the end.展开更多
Bacterial adhesion and biofilm formation impose a heavy burden on the medical system. Bacterial adhesion on implant materials would induce inflammation and result in implant failure. The adhesion of bacteria on food-p...Bacterial adhesion and biofilm formation impose a heavy burden on the medical system. Bacterial adhesion on implant materials would induce inflammation and result in implant failure. The adhesion of bacteria on food-processing and handling equipment may lead to food-borne illness. To reduce and even prevent bacterial adhesion, some bacterial anti-adhesion surface designs have been developed. However,the effect of some surface properties(including surface patterning, roughness and wettability) on bacterial adhesion has not been systematically summarized. In this review, a comprehensive overview of bacterial anti-adhesion surface design is presented. Modifying the surface pattern and roughness could reduce the contact area between bacteria and surfaces to weaken the initial adhesion force. Fabricating superhydrophobic surface or modifying hydrophilic functional groups could hinder the bacterial adhesion. The analysis and discussion about influencing factors of bacterial anti-adhesion surfaces provide basic guidelines on antibacterial surface design for future researches.展开更多
Initial bacterial adhesion on dental implant abutment is related to its surface chemical composition and physical characteristics.Selection of appropriate abutment materials resistant to bacterial adhesion is importan...Initial bacterial adhesion on dental implant abutment is related to its surface chemical composition and physical characteristics.Selection of appropriate abutment materials resistant to bacterial adhesion is important for dental implant maintenance.The aim of present study was to evaluate the effect of different properties of abutment materials on initial bacterial adhesion in vitro.Polished zirconia(PZ group), polished titanium(PT group) and ground titanium(GT group) samples were prepared to simulate clinical dental implant abutments.Chemical compositions, morphology, roughness, hydrophilicity and surface free energy of materials were analyzed.Oral commensal bacterium Streptococcus mitis was used to evaluate initial bacterial adhesion via turbidity test and colony-forming unit counting.The results showed that GT group presented the highest roughness, hydrophilicity and surface free energy.After 6-h incubation, GT group showed the significantly highest adhered bacteria counts;while non-significant difference existed between PT and PZ groups.Within the clinically applicable range used in present study, the surface physical characteristics, instead of surface chemical composition, of dental abutment material have the pronounced influence on initial 6-h bacterial adhesion.展开更多
文摘The Studies on the adhesion behaviour of bacterial and algae and its ecological significance have been reviewed in this paper. All research indicated that the adhesion processes of bacterial and algae involved an instantaneous reversible Phase and a time-dependent irreversible phase. The adhesion behaviour is basically controled by physico-chemical and biological forces and influenced by various environmental factors. The adhesion behaviour of bacterial and algae has important in freshwater ecosystem and its ecological significance implication is discussed in detail in the end.
基金supported by the National Natural Science Foundation of China (52003028)Fundamental Research Funds for the Central Universities (FRF-GF-20-06B)
文摘Bacterial adhesion and biofilm formation impose a heavy burden on the medical system. Bacterial adhesion on implant materials would induce inflammation and result in implant failure. The adhesion of bacteria on food-processing and handling equipment may lead to food-borne illness. To reduce and even prevent bacterial adhesion, some bacterial anti-adhesion surface designs have been developed. However,the effect of some surface properties(including surface patterning, roughness and wettability) on bacterial adhesion has not been systematically summarized. In this review, a comprehensive overview of bacterial anti-adhesion surface design is presented. Modifying the surface pattern and roughness could reduce the contact area between bacteria and surfaces to weaken the initial adhesion force. Fabricating superhydrophobic surface or modifying hydrophilic functional groups could hinder the bacterial adhesion. The analysis and discussion about influencing factors of bacterial anti-adhesion surfaces provide basic guidelines on antibacterial surface design for future researches.
基金financially supported by the National Yang-Ming University Hospital (Nos.RD 2011-009, RD 2012-021 and RD 2013-013), Taiwan
文摘Initial bacterial adhesion on dental implant abutment is related to its surface chemical composition and physical characteristics.Selection of appropriate abutment materials resistant to bacterial adhesion is important for dental implant maintenance.The aim of present study was to evaluate the effect of different properties of abutment materials on initial bacterial adhesion in vitro.Polished zirconia(PZ group), polished titanium(PT group) and ground titanium(GT group) samples were prepared to simulate clinical dental implant abutments.Chemical compositions, morphology, roughness, hydrophilicity and surface free energy of materials were analyzed.Oral commensal bacterium Streptococcus mitis was used to evaluate initial bacterial adhesion via turbidity test and colony-forming unit counting.The results showed that GT group presented the highest roughness, hydrophilicity and surface free energy.After 6-h incubation, GT group showed the significantly highest adhered bacteria counts;while non-significant difference existed between PT and PZ groups.Within the clinically applicable range used in present study, the surface physical characteristics, instead of surface chemical composition, of dental abutment material have the pronounced influence on initial 6-h bacterial adhesion.
