My 7 year old CFer has always had dehydration issues and drinks TONS of water and gatorade everyday. Recently he has developed a severe "dry mouth" with this gross sticky junk all over his teeth. It's ALWAYS there and he has to brush his teeth all the time. Has anyone ever had this? His dentist is holding some sort of toothpaste and gum for me to pick up to help stimulate his salivia production. I hope it helps cause this build up is gross and it can cause dental problems...just what we need on top of everything else.