Periodontitis is a disease affecting gums and bone that support the teeth, and it results from inadequate tooth brushing and flossing.  In this disease, the irritated gums pull away from the teeth and form pockets between the teeth and the gums. These pockets fill with bacteria and pus which give off a foul odor.  By thorough cleaning of these pockets, much of bad breath can be eliminated. 

Dental decay also can contribute to bad breath.  By placing necessary fillings (restorations), your mouth will feel much cleaner.  In addition, special mouthwashes are available at the office to help control bad breath.