That's interesting... it's a common dream motif. It also used to plague me greatly. Always seemed so real, as you mentioned. What made it stop for me was one time I had a very vivid lucid dream where I realized my teeth were fine and I was just in a dream.

I then looked myself in the mirror (in the dream), smiled, and "willed" my teeth to regrow themselves with my mind. They obliged, and soon the teeth were expanding beyond the confines of my mouth, overwhelming the whole dream scene with enamel! 😂 Then I woke up. This was probably 5+ years ago now.