I don’t know what they do for CE either, but even if they do CE, you’re going to find some younger dentists who are going to to be set in their ways right out of school and some dentists that are 65 with the latest technology in their office all the time and most of them somewhere in the middle. You’re best bet is to find someone you like and go with that. Besides, unless you have someone more complicated then cleanings and fillings, you probably don’t have a whole lot to worry about.
But like WhyNot (more or less) said, to dump a doctor because he just had his 50th birthday is kind of silly. Don’t forget, the 50 year old dentist has a lot of experience and the 35 year old doctor doesn’t. The 50 year old doctor has been doing this since there were ashtrays in the rooms (for the doctors/hygienists, not you) and people laughed at the idea of wearing gloves, if you get a root canal done by the 35 year old doctor, you might be his 4th one.
The older doctor is also going to have a bigger/better network of other doctors to refer you to, people that he actually knows can cure what ails you if it’s something out of his league (or his jurisdiction) and he’s not just passing you off to someone that dropped off a business card and a lunch last week.
I can keep going. FTR, I’m not saying you shouldn’t go to a younger doctor, I’m saying you shouldn’t go to a younger doctor because he’s younger.