Grrrrrrr....my immediate dentures have loosened up already after the first soft liner was put on. Dentist told me to keep them in 24/7 for at least 5 weeks. My gums must be changing fast because I just had the soft liner done less than a week ago. Most nights I wake up and find my lowers laying next to me on the mattress. And when I do manage to keep them in all night, I find that I've bitten/chewed on my tongue to the point that it's sore the following day. Is it true you can choke on the lowers if they are too loose??? I don't go in for another soft liner for another five weeks yet. Any way they can adjust the lowers just to tighten them up a bit?