I'm not quite sure. However, I'd imagine that the scaring would definitely jack your hearing. Just ask your doc about the odds of that happening to YOU. Sounds like it would be a rarity.
I just remembered that I had the procedure done...when I was a kid...YEARS ago. I believe that I had plastic tubes. They fell out on their own. My hearing...just fine. I went through many years of being in very loud race cars as well as ridiculously loud music and concerts. My hearing is still very good. It's bad only when I have a chip on the shoulder patient try to rant and rave about stuff.