Well, i'm glad you're feeling more comfortable knowing that you can do it sedated.

I've never been sedated for a dental procedure, or any medical procedure come to think of it... but I have been under Novocaine a million and a half times. But from those who I know have been under, I have seen one right after he came back, and he was pretty loooopy (excuse the expression; he was pretty out of it for a day or so.) So, i'd say it lingers for a little while.
But i think we're all glad it went so well for you! Good luck on the second one!
As for the dental issues for ppl with mental illnesses, I wasn't aware of that statistic. But I know from experience depression, social isolation, and maybe a little aspergers on my end was a direct influence in my inability to practice good dental hygiene until I was much much older. Or any hygiene until I was an adult.