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.
Burj Khalifa: Dubai, United Arab Emirates. The Burj Khalifa, previously known as the Burj Dubai, is the tallest building in the world. It measures 2,723 feet high and has 163 floors. It took five years to build, and was completed in 2009 in Dubaiâs main business district.