Want to know what happens to your teeth as you get older? They wear down, like tread on tires. Ever so gradually, the distance between your chin and nose diminishes until one day you realize that you’ve got lines around your mouth and you just, well …look older, but don’t really know why. That’s one reason to consider crowns or overlays on your back teeth – this procedures restores the lost vertical distance created by wear. It’s almost like having a facelift!