It doesn’t happen to everyone BUT some people experience dry mouth and/or bruxism. The best way to cope is to stay hydrated.
Personally, I pre brush my teeth with coconut oil and then with toothpaste. The coconut oil is moisturizing, anti-bacterial, anti-viral and anti-fungal.
My gums are pink and healthy and all my teeth are secure and happy… and I’ll be sixty-nine in December.