my guess is no as well however its nice to include in an update letter if youre trying to get off waitlists showing the perpetual life long learner that those dent schools want
You should mention it in your PS. It directly correlates to how dentists constantly have to update their knowledge via CE courses. I just started taking MOOCs for fun too! If I had started last year, I would have definitely talked about it in my PS.
Thanks for the comments, but I'd love to hear opinions from some more Dental Students or people who have more experience with / a more accurate perspective on admissions.