Certain tart beverages could be a boon to your smile.

Compounds in red cranberry juice appear to keep bacteria from sticking to teeth, which could thwart plaque formation and tooth decay, a recent study suggests. Stick to low-sugar or diet varieties to avoid the dental damage that can be caused by consuming too many sugary treats.

Regular dental cleanings coupled with brushing (at least twice per day) and flossing (at least once per day) will help keep tooth decay at bay by removing plaque from oral surfaces. Plaque contributes to gingivitis, a kind of gum inflammation that can lead to periodontal disease. Researchers also have connected oral conditions such as periodontal disease to an increased risk for heart problems, so keeping your smile healthy may help keep your heart healthy, too. In addition to poor oral hygiene, other factors that may increase a person's risk of gum diseases include smoking; having certain medical conditions, such as diabetes; using certain medications; and neglecting regular dental care.