8-10 years old happy girl in trendy clothes listens to the music from her smartphone in the. Photo Credit: Envato @sbjonyThe acids and sugar within fruit will cause a softening of the protective enamel on the teeth which can cause cavities. Waiting 45 minutes after consuming a smoothie to brush teeth is good practice because the enamel on the teeth will not be as vulnerable to damage from brushing after a little time has passed. To consume smoothies and minimize damage to the teeth many experts will recommend drinking it through a straw which will keep a lot of the sugars and acids from sticking to the teeth. It is also suggested that smoothies should be drunk reasonably quickly and not consumed as a day-long beverage due to the high acid and sugar content which will stick to the teeth all day. Also, a bottle of water nearby, or even diluting the smoothie, can help to lessen damage to the teeth.