"The constant exposure of sugar on their teeth is detrimental," says Paul Casamassimo, the oral health research and policy center director at the American Academy of Pediatric Dentistry. "My concern would be if the child walks around with this little pouch, then they might be doing the same thing," he says.
In fact, the academy recommends ditching the sippy cup and going straight from bottle to cup between 12 and 15 months because of the potential risk of tooth decay. Casamassimo calls them "baby bottle methadone."
Carbohydrates in all foods are used by bacteria to produce acid, and the acid eats away at the enamel of the teeth, creating the potential for cavities — a growing problem among all children, he says.
And the pouch food, because of its consistency, may be particularly tough on teeth if it's allowed to sit there for long periods. "We know that tends to stick on teeth and prolong the opportunity for the bacteria to build," he says.
Brushing kids' teeth twice a day and making them rinse with water after eating the pouch foods or drinking juice can help, Cassamassimo says.
Image: Smiling toddler, via Shutterstock