Have you ever taken a bite into some yummy ice cream only for a wave of pain to shoot through your mouth? Tooth sensitivity to hot and cold temperatures is a common sign of erosion of the enamel of your teeth, or the outer layer of it. How exactly does the enamel protect the sensitive underlying layers of your teeth? How can you take care of your enamel? A dentist near Union City is here to answer your questions about enamel.