Calcium is vital for the body because of its vital role in many cellular processes such as muscle movement, blood clotting, and nerve stimulation. Many times when we talk about dental health, we talk about how important calcium is, especially because it is also the main material for bones and teeth. Calcium is so important that there is a signal pathway that alerts the body when calcium levels are low. Since your body cannot make its own calcium, it has to obtain enough from dietary intake or deplete the bones to help maintain normal levels.