Instantly stream ADA Toothflix® 2. 0 videos anytime, anywhere. All you need is an internet connection! Dudley's Classroom Adventure streaming video cartoon follows Dudley the Dinosaur at school to learn about oral health. Run time 9:02. 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.