Yes. It was brought up in 2/4 interviews (Chicago, NYU, Temple, Buffalo): NYU and Temple (student interviewers) did not ask. It's a terribly difficult question to answer, too, because the interviewers don't want to believe you.
NYU was the only school that took me, so it's definitely possible that I am just not the strongest interviewer. But be prepared for conversations like:
- Why'd you switch?
- Well, I shadowed doctors in several different specialties and volunteered in various different hospital settings, and nowhere did I get a positive vibe. After I took a year off a friend suggested dentistry, so I did some shadowing, asked a ton of questions, and assisted for a summer. I tried to get several different perspectives, so I shadowed at a boutique-y Manhattan practice and talked to the owner and the associate, and also at a more "drill and fill" place in Staten Island.
Dentistry is the first place where I found an intersection between a varied, interesting healthcare profession and people committed and happy with what they are doing.
- You know that there are happy doctors too, right?
- Yes, I've had some friends who have had positive shadowing experiences, but as the vast majority of mine were negative, and I only really want to make life decisions by what I've seen firsthand, I stopped pursuing medicine. Dentistry has given me a really positive experience.
- How do I know you've shadowed enough, and that you won't drop out of dentistry like you dropped out of medicine?
- Etc.
Basically if the interviewer chooses to do so, they will have you at every way you turn, so you should be prepared with perfect answers (read: answers better than mine above, because I didn't get accepted at the places that asked).
Also, if you're wondering, it wasn't just that the interviewers didn't like me (at least I don't think so) - one of my interviewers moved from a very congenial discussion about fly fishing and paradiddles on the drumset directly into this line of questioning. Maybe I offended him by showing him my paradiddle??