When I was a kid I was gifted a Jew's harp. I never formally learned to play it (and also didn't learn to play other instruments, so my knowledge on music theory and on instruments is very limited). I'm not sure I played it the way it's supposed to be played. I always produced the (to my ears) best sound when the harp lay firmly connected to my teeth. But playing, the vibration of the metal was quite strong, even numbing in a way.
Does (correctly) playing the Jew's harp damage the teeth?