Evaluation of halitosis parameters in patients undergoing head and neck radiotherapy.

Objectives: To assess halitosis parameters using OralChroma™ and the correlation with salivary flow, oral hygiene index, radiation dose, and tongue-coating index among irradiated head and neck cancer patients compared to patients without cancer.

Materials And Methods: This cross-sectional study enrolled irradiated and non-irradiated patients divided into two groups. Hydrogen sulfide, methyl mercaptan, and dimethyl sulfide (DMS) levels were measured using a gas chromatograph, and sialometry was performed.