A retrospective analysis of patients suffering from halitosis over a 17-year period.

Halitosis is a socially avoided topic with an increasing worldwide prevalence. This study aimed to investigate the correlation between the different forms of halitosis and factors such as: gender, smoking, stress, and oral hygiene. We analysed data from patients registered at the Center of Salivary Diagnostics, Hyposalivation and Halitosis at the University Center for Dental Medicine Basel over a 17-year period, using both subjective and objective approaches to determine the presence of halitosis. The data was statistically analysed using chi-squared and Wilcoxon rank-sum tests. Although halitosis is of multifactorial origin, an oral cause was found in 3 out of 4 patients. Men showed higher values of volatile sulfur compounds (VSC) (p = 0.002) indicative of halitosis than women, while women displayed better oral hygiene (p < 0.001), yet were twice as likely to suffer from halitophobia than males. Patients with higher tongue coating scores (p < 0.001) and periodontitis (p < 0.001) had higher levels of VSC, contributing to bad breath, whereas patients with symptoms such as stress (p = 0.81) or smoking (p = 0.28) did not reveal significantly altered measurements. This study sheds light on the complex and multifactorial nature of halitosis over a long period of time. It further underlines the importance of individualized treatment strategies, given halitosis' multifactorial nature, in order to contribute to the patients' treatment needs.