Hello
I am in a similar dilemma but I want to return to dental nursing after 15 years!
I have contacted a few dental agencies to check whether I need to re-do the exam and some of them are saying I should [this could be because they would like me to pay for the course they provide] whereas others are saying no I do not need to! The best answer I have is to check whether i am still registered with the GDC and then ask the actual dental practice. hope this helps