Yeah, actually, after I posted I thought: it's not really 'synchronistic'! Wrong thought!
It's more...rather interesting because you 1. noted you were dreaming more. 2. posted that info here 3. we encouraged you to post dreams here (which means: let them help you...pay attention etc) 4. And then your Dentist says the same thing! That your dreams will help to heal you! (this is not a common perception amongst people, really!)
So...really, all I'm noting is that you're getting several 'pointers' regarding paying attention to your dreams, for you can learn much from them, heal and grow!