Bill,
To Amy's point, I use Biotene toothpaste and mouthwash prior to bed and I still use a humidifier at night, which was suggested to me during treatment. I stopped for a while about a month ago and I could tell the difference. This doesn't totally solve the problem, and I still wake up grabbing the water bottle the second my eyes open, but I think they certainly do help.
I also use the Biotene gum during the day. It helps keep my jaws from "tightening up" as well as helps moisturize.

Best Wishes,
Steve

SCC right side BOT/FOM; DX 1-25-06; Neck dissection/25% of tongue removed 2-17-06. Stage 2 Recurrence 7-06: IMRTX35 & 3X Cisplatin ended 10-18-06. Tumor found 03/18/13; Partial Glossectomy 03/28/13 left lateral tongue. Nov. 2014; headaches,lump on left side of throat. Radical Neck Dissection 12-17-14; Tumor into nerves/jugular; Surgery successful, IMRTX30 & 7X Erbotux. Scan 06-03-15; NED! 06-02-16; Mets to left Humerus bone and lesion on lungs-here We go again! Never, Ever Give Up!

**** PASSED AWAY 10/8/16 ****