I have been graduated for about 7 months now and have been working for 5 but 2 months don't really count as it was the associateship from hell - but I am just starting to get confident in some procedures. I am pretty confident with crowns and operative and starting to feel better with surgical extractions but still haven't done much endo or posterior composites. I think it depends on your personality, when you feel confident. I have friends who felt confident from day 1, wheras I still feel like a student.