Management of oral malodour

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Abstract
Halitosis is a common problem. Its aetiology is multifactorial, but oral malodour is usually caused by microbial metabolism from the tongue, saliva or dental plaque. Mouthwashes are only effective against halitosis caused by intraoral factors. The principal causative agents of oral malodour are volatile sulphide compounds (VSCs), including hydrogen sulphide, methyl mercaptan and dimethyl sulphide. Data suggest that oral VSC levels correlate with the depth of periodontal pockets. Trials have shown that both mechanical oral care and mouthwash use can reduce halitosis levels. The majority of studies involving mouthwashes have investigated chlorhexidine and essential oil mouthwashes, although comparative studies are sparse.