Seroquel is killing my teeth

Went to the dentist for a few fillings and when she actually started drilling she was a bit surprised at how much my teeth were decaying from the inside out. She said I was extremely close to needing 2 root canals but apparently I came at the right time. She says it’s really common with sleep medications for some reason. Does anyone have similar experiences and what are you doing to combat it? She recommended sensodyne and not washing the toothpaste off after brushing which is already what I’ve been doing so I bought Dr Jen’s 10% NHA toothpaste to see if that helps at all. I’m also gonna start taping my mouth at night to keep my mouth moist. I’ve tapered myself down from 200mg to 100mg with no side effects. (I take it for sleep) but I’m so ready to be done with this medication. Sure it’s helped me sleep but it’s also made me gain 30 pounds and is rotting my fucking teeth away. That’s shit they don’t tell you when they prescribe it to you.