If you mean hearing, then probably as a kid considering I used to get a lot of ear infections. Pretty sure it might have helped last time as well because of the inside being cleared of things blocking sound.

As for healing, it must have been doing something helpful as a kid considering I think I had something like 2-3 sets put in to help with fluid/whatever drainage. And I assume it helped last time considering they found out I needed another one when I went in for an ear infection.