Hello aspirant! 

If you belong to general category then with 450 marks you will not be able to get any government college or private college for Medical. You might be eligible for some lower ranking private colleges for BDS. If you belong to OBC, SC, ST category you are in a tight position for government Medical colleges and in a good position to get BDS from government colleges. I hope this information qas helpful!

I wish you all the very best for future!