Click Image To Enlarge
The outer most visible part of a tooth is the enamel. It is the hardest structure in the human body and is designed to resist chewing force, breakage, and staining. The bulk of a tooth consists of dentin, which is an organic component that can conduct sensation to the nerves that are deep inside the tooth in the dental pulp. The other constituents of the dental pulp are blood vessels and connective tissue. The root of the tooth is covered by cementum. Between the cementum of the tooth and the surrounding bone are the fibers of the periodontal ligament that anchor the tooth in place, yet give it a small amount of movement in the bone.