Periodontal Disease and Cancer Risk Factors
Summary
Periodontal disease, encompassing gingivitis and periodontitis, represents a chronic inflammatory condition of the supporting structures of the teeth. Beyond its local manifestations of gum recession, pocket formation and tooth loss, mounting evidence implicates periodontal disease as a contributory factor in the aetiology of various malignancies. Persistent oral inflammation fosters systemic inflammation, immune dysregulation and microbial translocation, thereby creating a milieu conducive to carcinogenesis. Keystone periodontal pathogens, notably Porphyromonas gingivalis and Fusobacterium nucleatum, can disseminate via the bloodstream or the aerodigestive tract, influencing tumour microenvironments at distant sites. Shared risk determinants such as tobacco use, poor socioeconomic status and advancing age compound both periodontal and cancer risk. Globally, recognising the interplay between oral health and cancer may inform preventive strategies, including rigorous periodontal care, microbial modulation and lifestyle modification.
Research from Nature Portfolio
A recent analysis employing genetic instruments to explore causality has demonstrated that periodontitis is linked to a heightened risk of head and neck malignancies, particularly oropharyngeal cancer. This work further identified Fusobacterium nucleatum as a plausible intermediary in the promotion of oropharyngeal tumour development, underscoring the microbial component of the association. Conversely, genetic susceptibility to certain epithelial cancers, such as basal cell carcinoma and endometrial cancer, appears to predispose individuals to periodontitis, suggesting bidirectional influences between oral disease and cancer.
An earlier systematic appraisal of tooth loss and oral hygiene behaviours revealed that individuals with greater numbers of missing teeth face an elevated risk of oesophageal carcinoma, whereas frequent tooth brushing is associated with a reduced incidence. This synthesis of epidemiological studies highlights the importance of maintaining oral cleanliness as a modifiable factor in gastrointestinal cancer prevention.
Periodontal Disease and Cancer Risk Factors publication trend
The graph below shows the total number of articles in periodontal disease and cancer risk factors across all publications each year (not limited to Nature Index journals).
Technical terms
Periodontitis: A severe form of periodontal disease characterised by destruction of the periodontal ligament and alveolar bone.
Dysbiosis: An imbalance in microbial communities that disrupts normal host–microbe interactions.
Mendelian randomization: A method using genetic variants as proxies for exposures to infer causal relationships in observational data.
Pathobiont: A normally symbiotic microbe that can cause disease under dysbiotic or immunocompromised conditions.
References
- Association between periodontal disease and systemic diseases: a cross-sectional analysis of current evidence. Military Medical Research (2024).
- Periodontitis and risk of cancer: Mechanistic evidence. Periodontology 2000 (2023).
- The Gum–Gut Axis: Periodontitis and the Risk of Gastrointestinal Cancers. Cancers (2023).
- Linking periodontitis with 20 cancers, emphasis on oropharyngeal cancer: a Mendelian randomization analysis. Scientific Reports (2024).
- Teeth loss, teeth brushing and esophageal carcinoma: a systematic review and meta-analysis. Scientific Reports (2015).
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