Sources: American Heart Association. Heart Disease and Stroke Statistics - 2009 Update; CDC, Heart Disease and Stroke Prevention Addressing the Nation's Leading Killers, At A Glance, 2011. Heart disease and stroke are the first and fourth leading causes of death in the United States.
Your teeth are composed of four dental tissues. Three of themâenamel, dentin and cementumâare hard tissues. The fourth tissueâpulp, or the center of the tooth that contains nerves, blood vessels and connective tissueâis a soft, or non-calcified, tissue.
Pulp: The pulp is at the center, or core of the tooth, and consists of connective tissue, nerves, and blood vessels that nourish the tooth. Most of the nerves and blood vessels to the tooth enter through the apex (bottom) of the root. Special cells in the pulp, called odontoblasts form dentin.