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.
Its status as the tallest building is being threatened by the construction of 432 Park Avenue, which just topped 1,000 feet and is set to be 1,398 feet tall upon completion (likely in 2015), the tallest residential building in the world.