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.
Tallest residential building in the world: 23 Marina in Dubai  --- 395m (1,296 ft.), with 90 storeys.  Tallest hotel in the world: Makkah Royal Clock Tower Hotels ---  601m (1,972 ft.) with 95 storeys.  Tallest structure in the world: Burj Khalifa, Dubai ---  828m (2,717 ft.).  Tallest tower in the world: Tokyo Sky Tree, Japan ---  634m (2,080 ft.).  First Building to have more than 100 storeys: Empire State  Building (New York City, USA) --- 381m (1,250 ft.), 102 storeys.