Hi Lyn and welcome to Dentalchat!

I am not aware of any intern year at the moment. There has previously been talk of it, however, I don't think it has been introduced anywhere in Australia yet (I stand to be corrected though).

Specialisation is usually achieved by completing a Masters course through one of the universities. Normally, this would be done a couple of years after completing your undergraduate course. This gives you experience in all facets of dentistry before specialising.

Cheers