Clinical application of a questionnaire for diagnosis and treatment of halitosis.

To treat halitosis, clinicians must examine the psychologic condition of a patient as well as the disease history and plausible causes of oral malodor, such as periodontal disease. However, it is not easy for a practitioner to carry out a psychologic examination other than the normal inquiry concerning oral malodor itself. Hence, a questionnaire that appears to be a normal inquiry, rather than one containing psychologic questions, was composed to survey the causes of halitosis and psychosomatic tendencies.