Complex sentence: Edward Hartley Angle (June 1,1855--August 11,1930) was an American dentist, widely regarded as "the father of American orthodontics".
Split into simpler sentences: Edward Hartley Angle (June 1,1855--August 11,1930) was an American dentist, widely regarded as the father of American orthodontics. Edward Angle is frequently described as "the father of American orthodontics".