Halitosis, commonly known as bad breath is very frecuent and affects at least 30% of the population. It is mostly caused by bacteria in the mouth that produce substances that create a bad smell. Ninety percent of patients suffering from halitosis have oral causes, such as poor oral hygiene, periodontal disease, failure to brush the tongue , food wedged between the teeth, unclean dentures, badly sealed caps or crowns, and throat infections.
The remaining 10 percent of halitosis sufferers have systemic causes that include renal or hepatic failure, carcinomas, diabetes, sinusitis.
Modern analytical and microbiological techniques permit diagnosis of bad breath. Management of halitosis involves maintaining proper oral hygiene, and periodontal treatment, including tongue brushing.