Here's my $0.02 but here's the caveat: I'm a pharmacist and have never been a dentist.
As stated before, both dentistry and pharmacy are good professions.
From a
financial standpoint, I don't think money will be an issue with either choice.
From the
standpoint of job satisfaction, you can find fulfillment helping patients in both professions and making a positive impact. In both professions, sometimes your patients will love you (fix their teeth or give them good medication advice, etc.), and at other times they will hate you (give them a root canal or filling
OR tell them their insurance will not cover a particular medication).
From a
flexibility standpoint, as far as I know dentists usually have to practice in a particular setting i.e. a dental office (again, I'm not one so there could be some variances that I am not aware of). Nowadays pharmacists can work almmost anywhere, they are not limited to standing behind a retail counter, especially if you get a Pharm.D and do a residency. You can work in ambulatory care clinics, inpatient, outpatient, ER (in some facilities), drug companies, insurance companies, technology companies (think Health 2.0), law firms, or even do your own thing! You can be a consultant pharmacist, or even choose to work full time for an agency and thus set your own schedule. You can work for a PBM, or even work in non-traditional roles where your clinical drug knowledge is leveraged for other uses such as in pharmacy informatics, clinical and/or medical informatics, clinical research associates, medical science liaisons, pharmaceutical sales rep... the list does go on.
Okay, I admit, I am obviously biased towards pharmacy because it's what I know well and honestly, I have done so many different things with this degree that I wouldn't change it for any other. Granted, I may very well be in the minority of pharmacists who actually like their jobs and enjoy the profession but believe me, the minority is growing in number as more and more clinical pharmacists are being churned out.
Alright, I'll stop now...
I hope this is helpful to you in some way.