I can't chew gum I have no teeth and no spit so even the kind for dentures won't work for me. I have thought I had spit a couple of times but I am not sure. My Rad Dr told me that the ENT totally cut out one of my saliva glands so not to expect it back alot. That is a bummer. But I keep hoping my other ones will kick in at any time so I too can lick envelops. Or even my lips. Don't think too hard about it just enjoy every NEW thing that comes up and when you taste the taste of your saliva it will be great! Brenda