Studies show that chewing sugarless gum for 20 mins after meals can help prevent tooth decay. How? Chewing gum increases saliva flow, which washes away food and debris and neutralizes acids produced by bacteria in the mouth. All gums with the ADA (American Dental Association) seal are sweetened with non-cavity causing sweeteners like xylitol, which has natural anti-microbial properties. Chewing gum is not a substitute for regular brushing and flossing. It should be a supplement to your daily dental care routine.