Acquired enamel pellicle and microbial biofilm adhesion to hydroxyapatite

The acquired enamel pellicle (AEP) is a complex biological film that forms within seconds on the hydroxyapatite surface of teeth upon exposure to saliva (Hannig & Hannig, 2009). It is composed of a variety of salivary proteins, including statherin, proline-rich proteins, mucins, and enzymes like alpha-amylase, which provide a protective barrier against acid erosion and facilitate lubrication (Siqueira et al., 2012). However, the AEP also serves as a critical interface for the selective adhesion of oral bacteria, such as Streptococcus and Actinomyces species, which recognize specific protein receptors within the pellicle to initiate biofilm formation (Nobbs et al., 2011). This microbial colonization is the precursor to dental plaque, which can lead to the development of dental caries and periodontal diseases if not managed (Marsh, 2010). Therapeutic strategies targeting this interface often involve the use of antimicrobial agents like chlorhexidine or surface-modifying agents like fluoride to disrupt bacterial attachment or enhance the mineral integrity of the underlying hydroxyapatite (Busscher et al., 2010). Consequently, the AEP-biofilm-hydroxyapatite complex is a central focus in oral health research for preventing biofilm-related oral pathologies.

Other names

Dental pellicleSalivary pellicleEnamel pellicleDental plaque formation interface

Inhibition of bacterial attachment, disruption of pellicle formation, and bactericidal activity.