Breath Odor and Oral Cavity

Dear Colleagues,

The purpose of this Special Issue is to bring the latest breath odor research results to the broad field of healthcare professionals and increase awareness of bad breath (halitosis, malodor, foetor), with a specific focus on the oral aspects.

Breath odor is a common complaint in society. It may reflect consumption of odorous foods and beverages, lifestyle habits such as smoking, use of certain medications or be a sign of systemic diseases (extra-oral halitosis), such as upper respiratory tract infections and uncontrolled diabetes. However, the most common form of breath odor has its origin in the oral cavity (intra-oral halitosis), where odorous compounds, mainly volatile sulfur compounds, are formed as a result of bacterial metabolism.

In addition to foul-smelling volatile sulfur compounds, other volatile and non-volatile compounds can be found in breath that cannot be detected by a human nose but with an electronic nose. These developments offer a promising tool, not only for bad breath diagnostics, but also for a broader use of breath odor as a diagnostic tool.

Prof. Dr. Marja L. Laine
Guest Editor

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