Abstract
The aim of this article is to review the properties of compounds available for the control of dental plaque biofilms, and describe their mode of action. The mouth is colonised by a diverse but characteristic collection of micro-organisms, which confer benefit to host. Numerous antiplaque (e.g. surfactants, essential oils) and antimicrobial agents (e.g. bisbiguanides, metal ions, phenols, quaternary ammonium compounds, etc.) have been successfully formulated into toothpastes and mouthrinses to control plaque biofilms. At high concentrations, these agents can remove biofilm and/or kill disease-associated bacteria, while even at sub-lethal levels they can inhibit the expression of pathogenic traits. Successful antimicrobial agents are able to meet the apparently contradictory requirements of maintaining the oral biofilm at levels compatible with oral health but without disrupting the natural and beneficial properties of the resident oral microflora.
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