Saliva and dental caries.
Level 5 - mechanism / opinion, no new human data
Narrative review of physiological and biochemical mechanisms without systematic synthesis or new clinical data.
What was done
This is a narrative review summarizing the biochemical and physical mechanisms by which saliva and its individual organic and inorganic constituents protect against dental caries.
What was found
The abstract reports no numerical data. It qualitatively identifies four primary functions of saliva in caries defense: buffering ability, cleansing effect, antibacterial action, and maintenance of calcium phosphate supersaturation. It describes functional redundancy and differing potencies among salivary proteins (such as statherin and acidic proline-rich proteins inhibiting calcium phosphate precipitation more strongly than histatins, cystatins, or mucins) and highlights the role of protein complexes in bacterial clearance and mineralization control.
Why it matters
It provides a conceptual model of saliva as an integrated biological fluid with redundant, synergistic components that regulate the oral environment and influence caries susceptibility.
Limits
The abstract describes a non-systematic narrative overview containing no primary empirical data, quantitative findings, sample sizes, or clinical trial outcomes.
Cited by
- supports Saliva is naturally supersaturated with the minerals needed to repair and remineralize teeth.