Hi, Deanna,
I'm pretty sure that our pediatric dentist recommends a count of 50k for the regular cleaning/check-up. But for a couple of years when Brady needed regular treatments, I could never remember to coordinate the dental check-ups with his good counts. So, I know that we went to the dentist a couple of times with lower counts - more like 30k - and I would just mention the low platelets so that they wouldn't pry as much with that sharp pick-like thing that Brady hates! He would get a little bleeding, but nothing that rinsing his mouth a few times didn't stop.
Also - since Devyn is only 3 years old, I would think his dental check-up would be gentle anyway. And thanks for the reminder - I need to call for Brady's check-up!
Beth - mom to Brady (age 19, diagnosed 1/18/02) and Matthew (age 21)