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.
1 Cavities (caries): Bacteria evade removal by brushing and saliva and damage the enamel and deeper structures of teeth. 2  Most cavities occur on molars and premolars. 3  Tooth decay: A general name for disease of the teeth, including cavities and caries.