[Dental biofilms]

Orodental pathologies are generally classified into two main groups: caries and parodontopathies. They result from polymicrobial infections based on the dental plaque's theory which has constantly evolved. Therefore, the concept of acquired biological pellicle or biofilm has been described and largely elaborated.A bacterial biofilm is a unit of bacterial microcolonies embedded within an exopolymeric matrix and adherent to an inert or living surface. The aim of this paper is to provide a review of the literature with regard to the formation, and composition of the biofilm, as well as to point out the close link that exists between biofilm and dental medicine.