10/11/2026
The Mouth Is a Gateway to the Body.
When we perform a periodontal examination in our office, we generally classify patients into three groups: periodontally healthy, have gingivitis, or periodontitis.
The ending “-itis” in medical terminology means inflammation. Gingivitis is the inflammation of the gums. At this stage, the inflammation is limited to the soft tissues and has not yet caused loss of the bone supporting the teeth.
Periodontitis is a more advanced inflammatory disease in which the tissues and bone supporting the teeth are progressively damaged.
The Mouth Is a Gateway to the Body
When we perform a periodontal examination in the dental office, we generally classify our patients into three groups: periodontally healthy, gingivitis, or periodontitis.
The ending “-itis” in medical terminology means inflammation. Gingivitis is inflammation of the gums. At this stage, the inflammation is limited to the soft tissues and has not yet caused loss of the bone supporting the teeth.
Periodontitis is a more advanced inflammatory disease in which the tissues and bone supporting the teeth are progressively damaged.
It all begins with a microbial challenge from dental biofilm, which triggers an immune and inflammatory response. This response is influenced by genetic, environmental, behavioral, and acquired risk factors. In susceptible individuals, persistent inflammation can ultimately lead to destruction of the periodontal tissues and progressive bone loss around the teeth.
But periodontal disease is not necessarily confined to the mouth.
Oral bacteria, bacterial products, microbial toxins, and inflammatory mediators can enter the bloodstream and potentially affect tissues elsewhere in the body.
Research has demonstrated associations between periodontal disease and a number of systemic conditions. Oral bacteria or their genetic material have been detected in locations far from the mouth, including atherosclerotic plaques, liver tissue, and colorectal tumors. Periodontal pathogens and inflammatory pathways have also been studied in connection with cardiovascular disease, diabetes, adverse pregnancy outcomes, and other systemic diseases.
It is important to distinguish association from causation. Finding oral bacteria in distant tissues does not necessarily mean that periodontal disease directly causes these diseases. However, growing evidence suggests that chronic oral inflammation and the movement of bacteria or bacterial products into the circulation may contribute to systemic inflammatory processes.
Periodontal disease is also extremely common. In population studies, approximately 32% of people have gingivitis, 42% have periodontitis, compared with only about 26% with healthy gums.
The mouth should therefore not be viewed as an isolated part of the body. Oral health is part of overall health, and chronic inflammation that begins around the teeth may have implications well beyond the oral cavity.
Healthy gums vs. gingivitis vs.periodontitis
It all begins with a microbial challenge from dental biofilm, which triggers an immune and inflammatory response. This response is influenced by genetic, environmental, behavioral, and acquired risk factors. In susceptible individuals, persistent inflammation can ultimately lead to destruction of the periodontal tissues and progressive bone loss around the teeth.
But periodontal disease is not necessarily confined to the mouth.
Oral bacteria, bacterial products, microbial toxins, and inflammatory mediators can enter the bloodstream and potentially affect tissues elsewhere in the body.
Research has demonstrated associations between periodontal disease and a number of systemic conditions. Oral bacteria or their genetic material have been detected in locations far from the mouth, including atherosclerotic plaques, liver tissue, and colorectal tumors. Periodontal pathogens and inflammatory pathways have also been studied in connection with cardiovascular disease, diabetes, adverse pregnancy outcomes, and other systemic disorders.
[Insert image here: diagram showing the distant effects of oral pathogens on different organs of the body.]
Suggested caption: Possible systemic effects of periodontal disease
It is important to distinguish association from causation. Finding oral bacteria in distant tissues does not necessarily mean that periodontal disease directly causes these diseases. However, growing evidence suggests that chronic oral inflammation and the movement of bacteria or bacterial products into the circulation may contribute to systemic inflammatory processes.
Periodontal disease is also extremely common. In population studies, 42% have periodontitis, compared with only about 26% with healthy gums.
The mouth should therefore not be viewed as an isolated part of the body. Oral health is part of overall health, and chronic inflammation that begins around the teeth may have implications well beyond the oral cavity.
