Instantly stream ADA Toothflix® 2. 0 videos anytime, anywhere. All you need is an internet connection! Treating Periodontal Disease streaming video explains options for treating periodontal disease and what can happen if it gets worse. Run time 3:27. 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.