Dentists, being oral specialists, are the ones who have the first access to examine our oral cavity. Did you know that the oral cavity exhibits many changes that are often overlooked, in terms of its color, texture, and odor? The symptoms of the oral cavity could help a doctor diagnose a condition.
In chronic disease conditions like diabetes, our oral cavity would show symptoms, which can prescreen them towards diabetes1. For example, while doing procedures such as scaling, when there is excessive bleeding, it could indicate uncontrolled blood sugar levels.
Overall prevalence of diabetes is estimated at 9.3% in 2019, and of the periodontal diseases, it’s around 20%-50%. These rates are expected to arise in the future.2
Understanding Periodontal Diseases
Periodontal diseases, is a broader term which refers to conditions that affect the gums and the supporting tissues of the teeth. It includes gingivitis and periodontitis. Gingivitis is the early stage, characterized by gum inflammation, and is usually reversible with consistent oral hygiene.
If proper hygiene practices are not followed, gingivitis can progress to periodontitis, during which the supporting structures of the teeth, including bone and connective tissue, begin to break down. This is caused by plaque accumulation, which harbors bacteria that penetrate deeper into the gum tissue. As these microbes spread, they can destroy collagen fibers(which hold the teeth to the bony socket) and lead to permanent tissue damage.
Periodontitis develops gradually and may not show symptoms in its early stages. However, in advanced stages, patients may experience bleeding gums, gum recession, shifting teeth, and tooth mobility. Unlike gingivitis, the tissue loss in periodontitis is irreversible, making early detection and management essential.
Risk Factors Contributing to Periodontitis
There are several reasons that can lead to periodontitis. Amongst them, the most significant are smoking, diabetes, and immune-compromising conditions such as HIV. Nutritional deficiencies and certain medications, such as phenytoin and calcium channel blockers, are known to cause gum overgrowth, creating an environment more susceptible to infection and inflammation.3
In addition to medical conditions and medications, lifestyle choices play a critical role. Obesity, poor dietary habits, and lack of physical activity have all been linked to a higher risk of periodontitis. Interestingly, studies have shown that regular physical activity may help reduce the incidence of this disease, while obesity is associated with a significantly higher prevalence.3
For individuals suffering from diabetes, elevated blood sugar levels can alter the oral environment, which promotes the growth of harmful bacteria in the gums. This not only accelerates the progression of periodontal disease but can also make it more difficult to control blood glucose levels highlighting the complex interplay between oral and systemic health.
The Link Between Periodontitis and Diabetes
Research has shown a strong connection between periodontal disease and diabetes, with each condition influencing the other. Individuals with periodontal disease are up to three times more likely to develop diabetes compared to those with healthy gums. In people already diagnosed with diabetes, periodontal disease is associated with a twofold increase in albumin levels and a threefold rise in the risk of end-stage renal disease.3
The key elements that promote this 2 way relationship between gum disease and diabetes are microbes, inflammatory cytokines, immune cell activity, glucose levels, and metabolic abnormalities.4
The extent of periodontal risk is closely related to glycemic control. HbA1c levels above 8% are at increased risk of developing diabetes.5 Even among younger individuals, nearly 10% of children under 18 with type 1 diabetes experience early signs of attachment and bone loss in the gums.
Common oral signs in diabetic patients include:
- Dry mouth (xerostomia)
- Fungal infections (oral candidiasis)
- Persistent gum inflammation and periodontitis
This relationship is bidirectional – diabetes increases the risk of periodontal disease, and in turn, periodontal disease can worsen blood sugar control, making diabetes more difficult to manage. This highlights the importance of coordinated care between medical and dental professionals, particularly for patients with chronic conditions.
“High blood sugar disrupts the balance of bacteria under the gums and increases inflammatory signals in periodontal tissues, which worsens insulin resistance and glycemic control. Integrating targeted periodontal therapy with stringent metabolic management is essential for early detection of dysglycemia and reduction of systemic inflammatory burden.”
–Dr. Betsy Joseph, Professor, Saveetha Dental College and Hospitals, Chennai, India
Managing Periodontitis
Effectively managing diabetes is essential when addressing periodontitis, as both conditions are closely linked. Since diabetes is a complex, long-term disease, a combination of lifestyle changes including a healthy diet, regular exercise, and consistent monitoring of blood sugar, blood pressure, and cholesterol is vital.
Self-management is essential for maintaining control over these parameters. In addition to medical care, the dental team should work closely with physicians to provide integrated care. Early signs of gum disease, especially in diabetic patients can be identified via regular dental checkups and recall.
Patient education and awareness programs can also make a big difference. When patients understand the link between their oral health and overall well-being, they are more likely to follow treatment plans and improve their condition. It is recommended that diabetic patients visit their dentist at least every six months for close monitoring and preventive care.
Studies have shown that even a small improvement in glycaemic control such as a 0.4% reduction in HbA1c levels can significantly reduce the severity and progression of periodontitis. This emphasizes the importance of collaborative care and patient engagement in managing both diseases.
Conclusion
Diabetes and periodontitis are both chronic conditions that significantly impact a person’s overall well-being. Given the strong connection between the two, it is essential to adopt a collaborative approach in their management. Dentists and general physicians, especially endocrinologists, should work as a team to ensure holistic care and better health outcomes for the patient.
References
- Fu D, Shu X, Zhou G, Ji M, Liao G, Zou L. Connection between oral health and chronic diseases. MedComm (2020) [Internet]. 2025 [cited 2025 Jul 1]; 6(1):e70052. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11731113/.
- Păunică I, Giurgiu M, Dumitriu AS, Păunică S, Pantea Stoian AM, Martu M-A, et al. The Bidirectional Relationship between Periodontal Disease and Diabetes Mellitus—A Review. Diagnostics [Internet]. 2023 [cited 2025 Jul 14]; 13(4):681. Available from: https://www.mdpi.com/2075-4418/13/4/681.
- Preshaw PM, Alba AL, Herrera D, Jepsen S, Konstantinidis A, Makrilakis K, et al. Periodontitis and diabetes: a two-way relationship. Diabetologia [Internet]. 2012 [cited 2025 Jul 1]; 55(1):21–31. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3228943/.
- Shi N, Kong C, Yuan L, Liu L, Zhao K, Lü J, et al. The bidirectional relationship between periodontitis and diabetes: New prospects for stem cell-derived exosomes. Biomedicine & Pharmacotherapy [Internet]. 2023 [cited 2025 Jul 2]; 165:115219. Available from: https://www.sciencedirect.com/science/article/pii/S0753332223010107
- Llambés F, Arias-Herrera S, Caffesse R. Relationship between diabetes and periodontal infection. World J Diabetes [Internet]. 2015 [cited 2025 Jul 2]; 6(7):927–35. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4499526/.
Written By: Dr. Merlin Levy T S
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