Why does my breath smell bad even though I brush my teeth?

Bad breath can have several causes, even if you brush well. Gum inflammation or periodontitis often causes an unpleasant odour. Bacteria can accumulate in deep periodontal pockets below the gum line. These bacteria produce sulphur compounds that smell bad. A coated tongue and a dry mouth can also contribute to halitosis. Regular cleaning between the teeth is essential. A visit to the dental hygienist helps to detect hidden inflammation. In some cases there is an underlying condition. Your clinician can investigate this with a thorough examination. With the right treatment, the breath often improves quickly.