Yes, although since I posted that I remembered where I read it. It was in an article in a dental journal (not sure where from, but probably the Zild) which took a sweep through the history of dentistry. Just the kind of thing a dentist's patient wants to be reading while he waits, I assure you. Not. Anyway, the commentary on the "practice" was written a couple of centuries later, after they'd invented printing. It was part of a Church pamphlet (I think) written to attack the ungodly practices of the Jews (who were the dentists in some German town or state), and it was accompanied by a rather lurid woodcut of the practice. Pure propaganda, and I bet it backfired something awful!

Schedule of Charges, Dentist, Lower Saxony, 1425

Extraction: Quarter of a thaler
Extraction with demurely dressed female smiling nicely: Half a thaler
Extraction with half-dressed female: Not smiling, Three quarters of a thaler. Smiling, seven-eighths of a thaler.
Extraction with a naked female drinking coffee: One thaler.
Extraction with multiple naked dancing females: 40 gold pieces.

Ah, these dentists. Every post a winning post ...