Ergonomy in Dentistry part1 App

What is the correct posture of the body during dental practice? How dentists can protect themselves from neck, back, or shoulder pain? What stretching and strengthening exercises should the dentists do to keep their musculoskeletal system healthy? This application practically answers these questions.
https://itunes.apple.com/us/app/ergonomy-in-dentistry-part1/id622371001?mt=8