Hill do you realize fillings aren't just "drill a hole and put some stuff in it and now your tooth is good as new"
Fillings aren't as durable as natural tooth. Theydon't last forever. They break. They come out. They need to be replaced. Sometimes a replacement filling isn't enough and they need crowns.
Sometimes decay gets under the filling, but looks fine externally. It may go undetected until it starts hurting you like a bitch. So then it needs a root cbrown town. Which needs to be followed by a crown. So between those two procedures that's 2k+ on a single tooth.
And do you think you can just get more and more fillings in the same tooth until your tooth is all filling? No, it'll need a crown.
And crowns don't last forever either. And they're like 1-1.5k each
... Or you could just spend a couple minutes a day brushing.
it literally won't go in between my teeth.
Talk to your dentist about it?