What causes dry mouth and bad breath

Dry mouth and bad breath may be due to dental caries, periodontal disease, oral cancerous lesions, diseases of non-oral origin, and so on.
1. Dental caries: There are a lot of anaerobic bacteria in dental caries, bacterial reproduction and degradation, which may cause dry mouth and bad breath.
2. Periodontal disease: the main cause of periodontal disease is plaque, bacterial reproduction and degradation, etc., which may cause dry mouth and bad breath.
3. Oral cancerous lesions:Cancerous lesions in the oral cavity are prone to dry mouth and halitosis when tissue necrosis and secondary infection occur.
4. diseases of non-oral origin: dryness syndrome, respiratory and digestive diseases may cause dry mouth and halitosis.
There may also be other causes of dry mouth and bad breath, it is recommended to go to the hospital in a timely manner, complete the examination to determine the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.