Once you have bad breath, your body may be in an imbalanced state or have a disease.

　　Halitosis is a general term for an unpleasant odor that continues to develop in the mouth. About one-third of our population suffers from bad breath. According to a survey by the American Dental Association, about 90% of dentists have encountered patients who have been treated for bad breath, and nearly 50% of dentists will see more than 6 patients with bad breath every week. Don't underestimate the problem of bad breath, it makes people "difficult to talk about", makes people dare not to communicate with each other at close distances, and even generates inferiority complex, which hinders normal interpersonal communication and social activities.

　　At present, halitosis is generally divided into real halitosis, pseudo halitosis, and bad breath phobia. True halitosis is divided into physiological halitosis and pathological halitosis, and pathological halitosis is divided into oral and non-oral halitosis. .

　　Physiological halitosis originates from spoilage and decomposition processes such as food residues in the mouth. For example, most people wake up in the morning and feel a bad smell in the mouth. That is because the mouth is relatively still during night sleep, the amount of saliva is reduced, the self-cleaning effect of the mouth is weakened, and the environment in the mouth is conducive to bacterial reproduction and fermentation with residual substances. As a result, bad breath gas is generated. The bad breath time is very short, and it usually disappears after brushing the teeth to clean the mouth or eating to stimulate the secretion of saliva.

　　Oral halitosis is caused by various oral diseases, and physiological and oral halitosis account for 80% -90% of the causes of bad breath. Tongue coating, accumulation of plaque, tartar, and tartar caused by poor oral hygiene are all causes of bad breath. In addition, patients with periodontal disease have inflammatory and necrotic tissues as a natural medium for bacteria. Gram-negative anaerobic bacteria in the oral cavity can utilize and break down the polypeptides and amino acids attached to the oral cavity to produce volatile sulfides. Related to bad breath include hydrogen sulfide, methyl mercaptan and dimethyl sulfur.

　　Bad breath is closely related to both oral and general health. Once you have bad breath, your body may be in an imbalanced state or have a disease. Therefore, bad breath may be a warning signal from the body.

　　Some bad breath problems can be solved through oral treatment, and some are non-halitogenic bad breath. Simply put, it is bad breath caused by systemic diseases. Current research has found that systemic diseases related to bad breath include:

　　The mouth is the beginning of the digestive tract, so some diseases of the digestive system can cause bad breath, such as gastritis and esophageal reflux disease. In recent years, there has been evidence that Helicobacter pylori, the main pathogen of chronic gastritis and gastroduodenal ulcer, has a great correlation with the occurrence of halitosis. Studies have shown that the rate of H. pylori positive in the stomach of people with bad breath is significantly higher than that of people without bad breath. After controlling for H. pylori infection, the symptoms of bad breath will be significantly improved. Recently, foreign scholars have discovered that parasitic infection may be one of the important causes of halitosis in children; urea nitrogen and ammonia in the blood of patients with liver cirrhosis and liver failure increase, and part of it is excreted from the breath; Smell or rotten egg, which can lead to bad breath.

　　Diabetes. Ketone bodies are produced during the metabolic process in diabetic patients, which can cause rotten apple smell in the exhaled air, which is one of the first signals of diabetes. A rare metabolic disease, fishy smell syndrome, can also cause a strong stench in the mouth. Women's physiological cycle causes changes in sex hormone levels and is more prone to halitosis than men.

　　Scientific research shows that smoking can increase the content of chemical components that cause bad breath in the mouth, create an environment conducive to bacterial growth, and reduce the mouth's resistance to disease. In addition, smoking can cause or exacerbate periodontal disease. Therefore, smokers are more likely to develop bad breath.

　　Such as chronic sinusitis, foreign bodies in the nasal cavity, respiratory infections, tonsil enlargement, etc., can cause bad breath.

　　other illnesses.

　　Such as leukemia patients, periodontal destruction syndrome patients, organophosphorus pesticides and heavy metal poisoning patients, there will be special odors in the mouth.