Chewing gum is considered by some parents to be something that "ruins the teeth", and interestingly also by some dentists there is hesitation, but mainly in the right context. The myth was born in a period when chewing gum was usually sugar upon sugar, and prolonged chewing fed bacteria in the mouth and caused acidity. There is truth here, sugar is fuel for tooth decay.
But today’s chewing gum is often sugar-free, with sweeteners such as xylitol or sorbitol. Here the updated truth comes in. Chewing sugar-free gum increases saliva flow. Saliva is the mouth’s natural defense mechanism, it dilutes acids, helps neutralize them, and helps clear food debris. Therefore sugar-free gum, especially after meals, can reduce the risk of tooth decay in some people.
How did the myth develop? It is based on past experience and children’s behavior - sweet gum chewed for hours, without brushing, with a preference for more sweets. The result: Tooth decay, and then the gum becomes the main culprit, even if the real reason is sugar and hygiene habits.
The current dental medical truth emphasizes this distinction. Chewing gum with sugar harms teeth over time if it is part of a pattern of high sugar consumption. Sugar-free chewing gum can be neutral and even slightly beneficial in the context of preventing tooth decay, mainly through saliva.
On the other hand, even sugar-free gum has limits. It does not replace brushing, does not replace fluoride, and does not replace dental check-ups. In people with jaw pain, temporomandibular joint disorders, teeth grinding or a tendency to headache from chewing effort, gum can worsen symptoms. In others, gum with certain sweeteners may cause gas or diarrhea if consumed in large amounts.
The right way to talk about chewing gum is not "good or bad", but which gum, how much and when. After a meal, when there is no possibility to brush, chewing sugar-free gum for 20 minutes can be a reasonable solution. Throughout the day, especially in children, it is already a matter of habit and control.
The myth that chewing gum always ruins teeth does not hold up in the reality of a sugar-free product, but the myth that sugar-containing gum contributes to tooth decay is definitely correct.