Oral soft tissues, acquired pellicle, and dental biofilm matrix

The oral soft tissues, acquired pellicle, and dental biofilm matrix represent the complex biological landscape of the oral cavity where dental diseases originate and therapeutic agents act. The acquired pellicle is a thin, protective film of salivary proteins, such as mucins and proline-rich proteins, that forms on tooth enamel and mediates the initial attachment of bacteria (Siqueira et al., 2012, Journal of Dental Research). The dental biofilm matrix, or extracellular polymeric substance (EPS), is a self-produced scaffold of polysaccharides and DNA that protects microbial communities from host defenses and limits the penetration of antimicrobial drugs (Flemming & Wingender, 2010, Nature Reviews Microbiology). Oral soft tissues, including the gingiva and mucosa, serve as a physical barrier and the site of inflammatory responses to pathogenic biofilms (Pihlstrom et al., 2005, The Lancet). Therapeutic strategies often involve the use of mouthwashes or dentifrices containing agents like chlorhexidine, which binds to these surfaces to provide long-lasting antimicrobial activity, a property known as substantivity (Jones, 1997, Periodontology 2000). Furthermore, the interaction between these components determines the efficacy of oral hygiene products, as the matrix can act as a reservoir for active ingredients or a barrier to their diffusion. Managing this environment is essential for preventing and treating prevalent conditions such as dental caries, gingivitis, and periodontitis (Marsh, 2004, BMC Oral Health).

Other names

Oral environmentDental plaque matrixSalivary pellicleOral mucosaExtracellular polymeric substances (EPS)

Biofilm disruption, inhibition of bacterial adhesion, surface adsorption and substantivity, antimicrobial activity, and enamel remineralization support.