Hematological Implications of Chronic Periodontitis

Chronic periodontitis is a prevalent inflammatory disease of the tooth‐supporting tissues that extends its impact beyond local bone resorption and soft‐tissue destruction. Systemic immune activation in periodontitis promotes the release of pro-inflammatory cytokines such as interleukin-6 and tumour necrosis factor-α, which in turn influence iron regulatory pathways and erythropoiesis. These processes may lead to anaemia of chronic disease, characterised by reduced haemoglobin concentration, altered red-cell indices and disturbances in iron homeostasis. Additionally, chronic oral inflammation can modulate white-cell function, potentially exacerbating conditions such as clonal haematopoiesis and neutrophil dysregulation. Understanding these connections is essential for integrated management of patients, emphasising the need for collaboration between dental and medical practitioners in monitoring systemic haematological parameters alongside periodontal status.

Research from Nature Portfolio

Recent studies have dissected the role of iron bioavailability in shaping subgingival microbial communities and disease severity. A seminal investigation in individuals with genetic haemochromatosis demonstrated that elevated transferrin saturation correlates with a loss of competitive exclusion among bacterial clusters, favouring periopathogenic genera such as Porphyromonas and Treponema. This work revealed that when transferrin saturation exceeds physiological thresholds, non-transferrin-bound iron becomes accessible to pathogens, driving dysbiosis and intensifying periodontal inflammation. These insights underscore the importance of systemic iron status as a determinant of host–microbiome equilibrium in periodontitis.

Hematological Implications of Chronic Periodontitis publication trend

The graph below shows the total number of articles in hematological implications of chronic periodontitis across all publications each year (not limited to Nature Index journals).

Technical terms

Anaemia of chronic disease: A form of anaemia arising from prolonged inflammation that impairs iron mobilization and erythropoiesis despite adequate iron stores.

Hepcidin: A hepatic peptide hormone that regulates systemic iron balance by inhibiting iron absorption and release from macrophages.

Transferrin saturation (TSAT): The percentage of iron-binding sites on transferrin that are occupied by iron, reflecting iron bioavailability.

Dysbiosis: An imbalance in microbial community composition that can lead to disease, here referring to shifts in subgingival bacteria favouring pathogens.

Clonal haematopoiesis: Expansion of blood-cell lineages derived from a single mutated haematopoietic stem cell, associated with inflammation and cardiovascular risk.

Erythropoiesis: The process of red-blood-cell production in the bone marrow, regulated by erythropoietin and systemic iron availability.

References

1. The Bloody Crossroads: Interactions between Periodontitis and Hematologic Diseases. International Journal of Molecular Sciences (2024).
2. Increased transferrin saturation is associated with subgingival microbiota dysbiosis and severe periodontitis in genetic haemochromatosis. Scientific Reports (2018).
3. Erythrocyte indices and localized stage II/III periodontitis in military young men and women: CHIEF oral health study. BMC Oral Health (2022).
4. Association of Chronic Periodontitis with Reduced Haemoglobin Level. Journal of Nepalese Society of Periodontology and Oral Implantology (2022).