My husband is a dentist - some dentists go to prepay because (office-dependent) there can be a seriously high number of no shows, and if you no show on a big procedure, that's a huge chunk of the doctor's schedule - which is super annoying and costs money, esp b/c he/she has to pay staff even if patients aren't there. The prepayment is more like a deposit on your spot, so you don't take a spot and then not show up. ETA: $1000 is about right depending on the type of crown material you're using.