For the ones that say on AADSAS "send at the same time you send your AADSAS app", I made the check out to "xxxx school of dentisry".....and addressed it to the office of admissions. Included in the envelope with the check was a small "note" which stated my name, AADSAS ID#, and a statement notifying admissions the date I submitted AADSAS, and that DAT scores will arrive when I take the test end of July. Some schools also wanted the DAT scores immediately, but since i'm taking in July, I made sure to let them know when I sent my checks.
note: this was only to schools where it said "send check/scores at the same time you send AADSAS"........the others it says "wait until admissions contacts you to give directions".....for those....do what it says.