Hello,

Chewing gum can lead to tooth decay and erosion, especially when sweetened with sugar. When you chew sugar-sweetened gum, you are essentially bathing your teeth and gums in a bath of sugar for a sustained period of time. So chewing gum is not good for health if you chew for long time, As long as it's sugarless, chewing gum for 20 minutes after you eat can help protect your teeth by removing food debris and increasing your saliva flow.