This is a helpful post with some tips from a great dentist about how to brush your teeth when you have sensory issues. This can be quite a struggle for many people, but brushing your teeth is obviously important. Also a heads up if you do use xylitol gum be careful storing it because it is highly toxic to pets.
Adding to this: My dentist used to paint stuff on my teeth that was (I believe) good for the enamel. The stuff tasted terrible and felt worse — think chalk dust, but a paste and on your teeth. I finally mentioned this and was allowed to rinse with a certain type of mouthwash for a certain amount of time during visits instead.
They’re not bad people, they just don’t speak your language.
Side note: Xylitol is very toxic to dogs – be careful if you have both in the house.