[Diagnosis and treatment of halitosis].

Halitosis or foetor ex ore is a frequent and complex problem with a multifactorial etiology. Nevertheless, in the majority of cases local oral conditions are the causes of the bad breath and therefore an extensive oral examination is the first step towards the identification of the source of malodor. A correct diagnosis will depend on analysis of data gathered from the patient's halitosis history, oral examination and additional laboratory and diagnostic tests.