BDS degree from India is recognized in most of the countries including -
New zealand etc.
However, in almost all countries you need to qualify the exam conducted by the medical council.
-There is great scope for Dentists in Australia and New Zealand but you need to register with Australian Dental council or NZ dental council to practice it or pursue any program in Dental in these countries.
-You can do Post graduation degree in Dental science from Russia which is affordable and you no need to clear any Registration examination.