Hi Christine is right that was the worst part about post rads for me, the gagging and saliva - I threw up from that more than chemo believe it or not. - I rinsed constantly carried a rag spit into that at home - or a glass, outside walking my dog I became a world class spitter. A humidifier loosens up the phlegm, at night and I'd water pick my mouth on the lowest setting with the tongue cleaner attachment to clean my mouth during the day- it was great. I'm assuming your mouth sores have cleared up, since you've gotten dentures. Hopefully it won't be too long for the Phlegm to lessen. I used to have major issues with gagging and my dental tray but I would suck it up for the 4 minutes and have to have them in... And now I'm okay with them. Take care...