doing dentistry school in australia and coming to canada

Hi guys! I know about the agreement between australia and canada and that if you do your dentistry in australia you can come back to practice in canada after passing all of your exams. However, I have never seen or heard of a dentist here in canada who has gone to australia from dentistry and successfully come back. Does anyone know why this is, I can't find many success stories on dental students in australia coming back to canada and I find this super sketchy!
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums