Salivary pellicle proteins and dentinal tubule surfaces

The salivary pellicle is a thin, acellular film (0.1–1.0 μm) formed by the selective adsorption of salivary proteins, such as mucins, proline-rich proteins, and statherin, onto the tooth surface (Siqueira et al., 2012, Journal of Dental Research). This pellicle serves as a protective barrier against acid-induced erosion and regulates the mineral exchange between the tooth and saliva (Hannig & Hannig, 2014, Monographs in Oral Science). Dentinal tubules are microscopic channels that extend from the dental pulp to the dentinoenamel junction; when exposed, they allow external stimuli to trigger fluid movement, leading to dentin hypersensitivity (Brännström, 1963, Journal of the American Dental Association). Therapeutic interventions target these surfaces using agents like stannous fluoride or arginine-calcium carbonate to occlude the tubules and reduce permeability (Cummins, 2010, Journal of Clinical Dentistry). Additionally, potassium salts are used to desensitize the intradental nerves by altering the ionic environment around the tubule-pulp interface (Markowitz, 2013, Dental Clinics of North America). These interactions are fundamental to the efficacy of desensitizing toothpastes and professional dental treatments aimed at restoring the integrity of the tooth-saliva interface.

Other names

Acquired enamel pellicle (AEP)Dentinal tubulesDentin-pulp complex interfaceSalivary pellicle

The primary mechanisms include the physical occlusion of dentinal tubules to prevent fluid movement, the precipitation of salivary proteins to reinforce the acquired pellicle, and the use of potassium ions to depolarize and desensitize intradental nerves (Markowitz, 2013, Dental Clinics of North America; Cummins, 2010, Journal of Clinical Dentistry).