Gem, sorry about your crowns. I can't help but to envision what the procedure must have been like -- it's sounds kind of rough to have lost your teeth? Does that take a lot of force?
Any way, I can't help you with the antiobiotics thing...maybe Ponch can chime in...I think she knows a lot about this stuff.
On a semi-related note, there seems to be more and more anecdotal evidence that connects shorter (ADR) recovery times with good dental hygience. Time will tell.