Oral disease is not a stand-alone condition and is likely to be related to other diseases in the body. Diabetes A large number of studies have shown that diabetes and periodontal disease share common risk factors and are mutually high risk factors for the development of the disease. Diabetic patients often have varying degrees of oral pathology, and in the diabetic population, periodontal disease is more prevalent, with severe lesion damage and more rapid progression. Gastrointestinal diseases The first hurdle of food digestion is in the oral cavity, where it is fully chewed and then swallowed for digestion and absorption in the stomach and intestines. Poor oral hygiene can also cause pathogenic bacteria to multiply in the stomach, and failure to set teeth in time after missing teeth can also increase the digestive burden of the stomach and intestines. Heart diseases The pathogenic bacteria of oral diseases and the toxins they produce can invade the bloodstream and can produce related antibodies and lectins, which can aggravate or cause heart diseases such as subacute infective endocarditis and coronary heart disease. Periodontitis is an independent risk factor for acute attacks of coronary heart disease and is significantly associated with either acute attacks or overall mortality. Cerebrovascular disease Periodontitis can also induce ischemic stroke, and studies have demonstrated that periodontitis is a greater risk factor for stroke than smoking, and periodontitis is also a risk factor for stroke, coronary heart disease, and myocardial infarction. Respiratory diseases Oral diseases are strongly correlated with aspiration pneumonia from various causes. Statistics show that 80% of the causes of pneumonia are inhalation of secretions from the mouth and pharynx containing bacteria. Dental disease associated with arthritis, kidney disease, eye disease It is well known in the medical community that untreated dental disease can cause arthritis, nephritis, and eye disease by forming infected lesions on the roots of the teeth. Impact on maternity and fetus Studies have found that periodontal disease is one of the risk factors for the birth of low birth weight babies. The risk rate of preterm delivery and birth of low birth weight babies in pregnant women with severe periodontitis is 7.5 times higher than that of pregnant women with normal periodontal disease, which is greater than the effect of smoking and alcohol consumption on low birth weight babies. Affects growth and development Reduced chewing function, resulting in partial eating and loss of appetite, leading to weakened gastrointestinal digestion and absorption, poor nutrition of the body, growth and development is affected.