Hi, I have NO idea. Someone might know, but I live in New Zealand. The only thing I can suggest is emailing a dentist here in my country, who I think used to work in Australia and he uses the diamond range of dental materials. He might be able to tell you of a few dentists who use these in Australia. He is one of the top biologic dentists and is very well informed on Diamond.

Here is the link to contact him (Dr Imbeau)
http://www.integrativedentalmedicine.com/contactus.html

I think he's closely affiliated with many like-minded dentists and has studied overseas.