I'm going to tell a dental hygienist I wouldn't be her 1st scan patient
How do you know that she is a dental hygienist?
I worked in a dental office for a while and dealt with lots of dental hygienists.
If you are unsatisfied with the dental hygienist that assisted you, it's okay to find a new hygienist. Continuing to get work done by a professional that you do not trust will lead to you being disatisfied with their services.
Well I already have bad teeth so it doesn't matter that much.
If you feel she can't do her job well, you have the right to a different provider. She could be new and if it is only a scan it isn't that bad, not like she is pulling your teeth.