OMG. Teeth are like roads and bridges. If you don't maintain them they fall apart. If that guy doesn't get with it he'll have fewer teeth when (if) he gets to 72 than I do. I've been a 2min 2x per day plus floss and mouthwash guy for years. I used to slack off but I recently paid ten grand for an implant bridge and I don't want to lose any more!