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Last name Dement (Dement
, Демент
, Dément) , worldwide, is quite a rare surname. The cognomen Dement is habitual in the United States, where it is quite a rare surname, Croatia, where it is a rare surname, and Ukraine. Not in comparison with a country's population, it most frequently occurs in the United States, Russia, and Ukraine. Very seldom, Dement is the forename as well as the last name.