Most definitely. A large number of dental hygienists are graduating in Ontario now, so there's movement throughout the provinces. In terms of regulations, you have to work for the regulatory bodies. It has more to do with the scope of practice in our profession. There's obviously the language and other barriers, but it's more the scope of practice and what you can do in the different provinces to know whether or not you can practise in those provinces.
I know a number of foreign-trained dentists enter through Newfoundland and Labrador and work as dental hygienists first to get their licence to practise dentistry.