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I am going on to week 8 of my dentures. Has anyone had any experience with the jaw getting tired or hurting. It seems at the end of the day my jaw is so tired and now is starting to hurt. I work at an animal hospital and have to do alot of talking. I am still having trouble wearing my lower partial not to mention keeping it from popping up when I try to chew. I use adhesive on it and the upper and have to replace it a couple times a day. I know the instructions say apply only once. And now the upper denture feels like it is rubbing on the back of my tongue.