@johnbishop Hello again, John. I forgot to mention, I've finally had a mouth guard made by my dentist. This involved having molds (moulds? Lol) made of my teeth but not too big a deal to go through. Very costly ($600 for me with no dental plan) but I am so desperate to help the pain and misery of Lichen Planus. My thought in getting the mouth appliance was that it would help keep my teeth away from my sore tongue and cheeks, lips, etc. The material it's made from is silky soft and softish in my mouth.
And it does work, giving me relief when I need it! I usually wear it at night, but also sometimes during the day during painful periods.

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