I am talking about India, may be its diff in ur country. there the degree(BDS) is not granted unless you dnt complete your internship. SO essentially if one has passed the final year but haven't done the internship- he/she has not completed the degree. So, internship is a mandatroy requirment.
to be accepted to advanced standing program, one has to have a "Completed Degree" from outside US, so if u haven't done ur internship, essentially u haven't completed the degree, so even if u have 92 on nbde exams, you are technically not eligible.
Correct me if i am wrong.