If youâre like most people, you would probably guess that itâs cavities. Unfortunatelyâ¦youâd be wrong. It is generally accepted that the leading cause of tooth loss in people over 35 is periodontitis, more commonly known as gum disease. In people under 35, cavities are the leading cause of tooth loss. Teeth are normally held firmly in place under your gums by a strong bone called alveolar bone.
There have only been four presidents of the United States who were Democratic-Republicans (Thomas Jefferson, James Madison, James Monroe, and John Quincy Adams), and only four who were Whigs (William Henry Harrison, John Tyler, Zachary Taylor, and Millard Fillmore).
Hillary Clinton, Donald Trump and Bernie Sanders are among the 2016 presidential candidates that could join a rare group - U.S. presidents age 70 or older. Currently, the only two are Ronald Reagan and Dwight Eisenhower. See ages of all U.S. presidents and this year's candidates.