Prevalence of halitosis among young adults in Dunedin, New Zealand.

Objectives: To investigate the prevalence of halitosis in young adults. Methods: Young adults (n = 372; mean age = 21.0 ± 2.6 years old, range = 18–30 years) in Dunedin, New Zealand, were recruited into the cross sectional study after providing informed consent. The prevalence of halitosis was determined using both objective measurements (parts per billion [ppb] volatile sulphur compounds [VSCs] in the exhaled air) and subjective measurements (self‐reported halitosis questionnaire, tongue coating index, and organoleptic assessment). Results: Volatile sulphur compounds measurements indicated that the prevalence of halitosis (values ≥140 ppb) was 31.2%; 25.6% of participants self‐reported halitosis. The organoleptic assessment revealed that 14.3% of the participants had a score of ≥2. A positive correlation was found between the VSC measurements and organoleptic assessment (p < 0.05). No significant relationship was found between self‐reported halitosis and either organoleptic assessment or VSC measurements. Self‐reported dry mouth, smoking, oral hygiene index, DMFT index, and tongue coating score were significantly associated with the organoleptic assessment (p < 0.05). The self‐reported dry mouth, mouth breathing and tongue coating score were significantly associated with the VSC scores (p < 0.05). Conclusion: Halitosis, as represented by VSC, was found in 31.2% of the participants. VSC scores and organoleptic assessment were positively correlated. There was no significant relationship between self‐reported halitosis and either organoleptic assessment or VSC measurements. [ABSTRACT FROM AUTHOR]