Although it may seem like your newborn has no teeth, every child is actually born with two full sets of unerupted teeth - both baby teeth and permanent teeth. The teeth are in a developmental stage at birth, but it won't be too long before they make their first appearance!

Although every child's teeth develop at a unique pace, it usually takes about six months for the first baby teeth to begin pushing through the surface of the gum. You may notice physical changes, like swollen gums, flushed cheeks and increased dribbling; or behavioral changes like irritability before you even see a tooth appear. These are all normal symptoms of teething.

On the outside is a protective layer of enamel - the hardest substance in the body. Below that is a bone-like substance called dentin, which makes up the largest part of the tooth. Underneath the dentin, the tooth actually has a soft center. This is called the pulp, and it houses all of the tooth's blood vessels and nerve endings. Finally, cementum covers the roots.