1 Have the equivalent of at least two years clinical experience as a dentist. 2  Complete an accredited three year full-time university degree in orthodontics. 3  Be registered as a Specialist in Orthodontics.
It opened on January 4, 2010. Soaring 828 meters (2,717 feet) the Burj Dubai in the United Arab Emirates is now considered the world's tallest building. Keep in mind, however, that these statistics include the skyscraper's enormous spire.
One World Trade Center Is Officially America's Tallest Building, But Other Countries Go Taller. One World Trade Center, New Yorkâs new skyscraper, earned the title of America's tallest building Tuesday. Slated to open in 2014, the new structure knocked Chicagoâs Willis Tower (formerly known as the Sears Tower) to second-tallest in the country.