Regardless of the cause of your bad breath, good oral hygiene and regular checkups with the dental hygienist will help reduce it. Brushing and flossing will eliminate particles of food stuck between your teeth, which emit odors. This will also help prevent or treat periodontal disease (gum disease) caused by plaque buildup on your teeth, which can lead to bad breath. If you currently wear dentures, they should be properly cleaned and soaked overnight in antibacterial solution. Finally, make sure to brush your tongue regularly to eliminate any residue.