The oral cavity is warm and moist,which is a complex electrolyte environment.This environment is not only suitable for the growth and propagation of various microorganisms,but also conducive to the adhesion of microorganisms to the surface of metal materials and causes metal corrosion.Oral metal materials always yield to by acids and bases released by microorganisms,thus reducing the mechanical properties of materials and shortening the service life of materials.In addition,corroded metal materials can produce metal ions causing damage to oral mucosa and leading to periodontal diseases and denture stomatitis.In recent years,people reduce the adhesion of bacteria by changing the surface roughness of metal materials and adding antibacterial coating on metal surface,and some results have been achieved.This paper will summarize the research on the adhesion between metal materials and bacteria commonly used in oral cavity,and briefly describe the research status of the adhesion between bacteria and metal materials used in oral restoration.
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