Abstract
In the present investigation, the in vitro adhesion of dispersed non-coccal dental plaque bacteria to buccal epithelial cells was examined. Human buccal epithelial cells, incubated in the presence of dispersed supragingival dental plaque, bound averages of ca. 6-15 non-coccal forms/epithelial cell, as opposed to indigenous levels of only 0.2-0.6 on buccal epithelial cells incubated in buffer alone. Adhesion was strongly inhibited by amphipathic agents (Tween 80, sodium dodecyl sulphate, and emulsan), and by saliva. The data suggests firstly that non-coccal bacteria can adhere to epithelial cells in vitro , but may be prevented from doing so in situ by saliva, and secondly that hydrophobic interactions may help mediate the observed adhesion. Keywords: Adhesion; Dental plaque; Epithelial cells; Saliva; Amphipathic agents.
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