Oral biofilm-forming bacterial cell envelope and adherence structures (OB-CEAS)

Oral biofilm-forming bacterial cell envelope and adherence structures represent a complex set of targets involved in the development of dental plaque. These structures include the bacterial cell wall, lipopolysaccharides, and specialized surface proteins known as adhesins, which facilitate the attachment of primary colonizers like Streptococcus mutans to the tooth surface and subsequent co-aggregation with secondary colonizers like Porphyromonas gingivalis. The extracellular polymeric substance (EPS) matrix further stabilizes this structure, providing a protective environment against host immune responses and antimicrobial agents. In clinical practice, these structures are targeted to prevent and treat oral diseases such as dental caries and periodontitis. Therapeutic interventions range from mechanical disruption to chemical agents like chlorhexidine and fluoride, which aim to destabilize the cell envelope or inhibit the metabolic processes required for biofilm maintenance. Understanding these structures is critical for developing targeted therapies that can selectively disrupt pathogenic biofilms while preserving the healthy oral microbiome (Source: PubMed, PMC4156240; NIH/NIDCR).

Other names

Dental plaque biofilm structuresOral bacterial cell wall and adhesinsPlaque-forming bacterial cell envelopeBacterial adherence factorsOral microbial biofilm matrix

Drugs targeting these structures typically act by disrupting the bacterial cell membrane, inhibiting the synthesis of the peptidoglycan layer, or interfering with the binding of bacterial adhesins to the acquired pellicle or other bacteria. For example, chlorhexidine increases membrane permeability leading to cytoplasmic leakage, while fluoride inhibits bacterial enzymes and reduces the acid solubility of the enamel-biofilm interface (Source: NIH/StatPearls).