I saw on our national news a program to bring dentist to the Afghan population - they gave these "field dentists" /civillian Afghans a 6 month course led by professionals and then they furnished them with chairs and "tools of the trade" and set them up as ambulatory dentists in villages etc .
Obviously they would not undertake complex cases -but nevertheless its would be an advantage to have one if those teeth should start to act up.
(remember when the army dentist took my wisdom tooth - after 1 hour of excruciating pain -a pain that would more than double after the shots wore off - he yanked my tooth out and said -" well now,this one you could have just kept in there " (!)
I can laugh now -but seeing as this was in the AO they would only give me paracetamols for the pain .
Thanks for reminding me about post apocalyptic dentistry though -must remember to subject characters to tooth aches etc