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.
First the dentist removes all the dental pulp from the tooth. The dental pulp is the part in the center of a tooth made up of living connective tissue and cells called odontoblasts.. This vital pulp, which is necessary for a living tooth to remain living, is full of blood vessels and nerve tissue.