Sour can be just as bad as sweet

Sugar isn’t the only dental villain that undermines healthy teeth. Acidic, low-pH foods -- sour sweets, soft drinks, fruit juices -- soften teeth. The result: enamel erosion and diminished tooth size. 

To make matters worse, children’s tooth enamel isn’t mature until a decade after their teeth erupt. Because it’s softer, it’s more susceptible to the acid. These sour sweets, when tested, have a really low pH, nearing battery acid.

Brushing periodically with baking soda has been shown to neutralize acids in the mouth, which reduces the amount of acid-loving bacteria that cause cavities.