Salivary Biomarkers in Periodontal Disease
Summary
Periodontal disease encompasses a spectrum of inflammatory conditions affecting the supporting structures of the teeth, driven by a dysbiotic oral microbiome and host immune response. Saliva offers a non-invasive window into oral and systemic health by harbouring proteins, enzymes, cytokines, nucleic acids, metabolites and metal ions that reflect periodontal status. Advances in proteomic and metabolomic technologies have enabled the characterisation of differential protein profiles, oxidative stress markers and small-molecule metabolites in saliva, correlating with clinical indices such as pocket depth and attachment loss. Ionic analysis has revealed alterations in essential and toxic metal concentrations, which influence microbial ecology and tissue inflammation. Global efforts seek to standardise salivary collection and analytical protocols to translate biomarker panels into chair-side diagnostics for early detection, risk stratification and monitoring of therapeutic outcomes in diverse populations.
Research from Nature Portfolio
A comprehensive study of salivary metal profiles in children and adults demonstrated that even at low concentrations, metals such as antimony, arsenic and mercury are associated with shifts in bacterial community structure and the presence of dental decay. Distinct changes in key taxa were observed in relation to specific metal levels, and elevated antimony was linked to increased carious lesions, suggesting that salivary metal analysis may serve both as a biomarker of microbial dysbiosis and a predictor of periodontal risk. This work highlights the interplay between environmental exposures, salivary chemistry and oral microbial ecology as relevant to disease susceptibility.
Salivary Biomarkers in Periodontal Disease publication trend
The graph below shows the total number of articles in salivary biomarkers in periodontal disease across all publications each year (not limited to Nature Index journals).
Technical terms
Biomarker: A measurable substance in biological fluids that indicates normal or pathological processes, or responses to therapeutic interventions.
Gingival crevicular fluid (GCF): Serum-derived fluid found in the crevice between tooth and gingiva, enriched in host-derived and microbial molecules reflective of periodontal status.
Proteomics: The large-scale study of the complete set of proteins in a biological sample, used to identify differential expression linked to disease.
Metabolomics: The comprehensive analysis of small-molecule metabolites in a biological system, providing insight into biochemical pathways and disease states.
Inductively Coupled Plasma–Mass Spectrometry (ICP-MS): A sensitive analytical technique for quantifying trace and ultra-trace elements in biological fluids.
References
- Low levels of salivary metals, oral microbiome composition and dental decay. Scientific Reports (2020).
- Comparing Ionic Profile of Gingival Crevicular Fluid and Saliva as Distinctive Signature of Severe Periodontitis. Biomedicines (2022).
- Assessment and Correlation of Salivary Ca, Mg, and pH in Smokers and Non-Smokers with Generalized Chronic Periodontitis. Medicina (2023).
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.