Daily brushing of teeth with persistent bad breath is mostly considered to be caused by periodontitis, but it cannot be excluded that it may be due to reasons such as dental caries, reflux esophagitis, chronic gastritis, etc. It is recommended to adopt appropriate treatment methods after diagnosis.

1. Periodontitis

Poor oral hygiene habits and plaque formation often lead to bacterial growth and chronic inflammation of the periodontal tissue. Patients usually have symptoms such as loose teeth and unpleasant odors in the mouth. It is recommended to relieve the condition through supragingival scaling under the guidance of a doctor, and take metronidazole tablets, cefradine dispersible tablets, amoxicillin capsules and other drugs as prescribed by the doctor to promote the elimination of inflammation. During the treatment of the disease, good oral hygiene should be maintained, and attention should be paid to developing good living habits.

2. Dental caries

Poor oral hygiene, long-term consumption of high-sugar foods, and crooked teeth often lead to bacterial infections that destroy the hard tissue of the teeth. Common symptoms include changes in tooth color and unpleasant odors in the mouth. Patients need to go to the hospital for examination under the guidance of a doctor. Surgical treatments such as tooth filling and root canal treatment can remove necrotic tissues in the teeth. Regular follow-up is also required, and good oral hygiene habits should be developed.

3. Reflux esophagitis

Improper diet, obesity, and overeating may lead to increased pressure in the lower esophageal sphincter and delayed gastric emptying, which often results in gastroesophageal reflux clinically, accompanied by symptoms such as acid reflux and belching. Patients need to take drugs such as omeprazole enteric-coated tablets, aluminum hydroxide magnesium carbonate tablets, and domperidone capsules under the guidance of a doctor to inhibit gastric acid secretion and accelerate gastrointestinal motility. In addition, the dietary structure should be adjusted regularly with three meals a day, and daily care should be taken.

4. Chronic gastritis

Improper diet-induced Helicobacter pylori infection, autoimmune abnormalities, and bile reflux often lead to long-term and repeated damage to the gastric mucosa, usually presenting as chronic lesions. Patients may experience symptoms such as loss of appetite, taste reduction, and bad breath in the mouth. Patients need to take drugs such as hydrochloric acid clindamycin capsules, lansoprazole enteric-coated tablets, and compound digestive enzymes tablets as prescribed by the doctor to improve gastric motility and relieve symptoms. Attention should be paid to dietary hygiene and bad eating habits should be corrected.

Apart from the above reasons, it may also be caused by gastric ulcer, which is mostly considered to be due to unhygienic diet and gastritis, leading to repeated irritation of the gastric mucosa and ulceration. Patients need to take drugs such as sucralfate tablets, amoxicillin capsules, and pantoprazole enteric-coated capsules under the guidance of a doctor. Regular follow-up and close monitoring of their condition are also required.