I have the same problem. 2 xylimelts tablets placed on the bottom gums prevents dry mouth for much of the night. They stick to your gums. Also, I had my doctor turn my air pressure down. My AHI actually dropped after doing so. The only problem is they are expensive.
"What are XyliMelts? XyliMelts are oral-adhering discs that stick to your teeth or gums to relieve persistent dry mouth. Use XyliMelts during the day or while sleeping and find temporary relief from frequent thirst, sticky dryness in the mouth and throat, and other unpleasant dry mouth symptoms. Made with xylitol, a natural sweetener that helps stimulate saliva flow, XyliMelts utilize adhering disc technology to slowly release 550 mg of xylitol, which is most effective when continuously released and lingers in the mouth, especially when used while sleeping when saliva flow is lowest. XyliMelts last for hours, moisturizing and coating the mouth for optimal comfort. The mild mint flavor freshens your breath and the xylitol may reduce the risk of tooth decay."Quote from Oracoat
I'm not sure. I'll look.
For full mask mouth breathers worst side effect is dry mouth and potential for cavities
Xylamelts help but not a solution. Only last 5 hours or so. They are also supposed to make mouth less acidic.
So I am new to this. I started with the airfit 20. Its OK but I have air leakage into my eyes. So I saw the airfit 30 and thought it looked great. Anyways, I used the airfit 30 for 3 nights and went back to the airfit 20. The airfit 30 feels "hard" against my face and it left marks and hurt the bottom of my nose where the airholes are. So I am back to the airfit 20. It really feels like a big pillow on my face. The only problem I have is the drymouth. I use xylimelts but they only work part of the night. Bottom line, I didn't find the airfit 30 as being an improvement over the airfit 20. Disappointed.