Instantly stream ADA Toothflix® 2. 0 videos anytime, anywhere. All you need is an internet connection! Dental Crowns streaming video describes reasons a crown may be an appropriate option and highlights steps of placement. Run time 3:45. Your one-time payment gives you instant access to your selected video(s) from your ADA e-Bookshelf. View the list of all 26 videos and watch demo videos at ADA. org/toothflix.