The human body is remarkable in its ability to repair ... or a broken bone, the body kicks into gear to heal and restore.

and biting your nails can chip or crack teeth. Not using a straw or brushing too hard can also wear down your teeth' enamel. Talk with your dentist about any habits you think may be harming your ...

For instance, teeth contain enamel, a substance much harder ... throughout various life stages. Bone can repair itself or heal when broken. Bone marrow helps create blood cells.

Tooth decay is the destruction of tooth structure and can affect both the enamel and the dentin layer of the tooth. Tooth sensitivity is discomfort in one or more teeth that is triggered by hot ...