Can a dental istant cement in a permanent crown?

I have been going to this dentist who lately doesn't seem to be in the office that much. This last visit was in order to have my temporary crown removed and have the permanent one put in. It turned out that he was out of town on vacation. The two dental istants in the office did the work with one permanently cementing it in. I live in the state of Florida, and I'm wondering if this was legal for a dental istant to do this. I am rather concerned as to whether it was adjusted properly. Also, I'm having some twinges in that area of my mouth but hoping they will settle down. Wondering if anyone knows for sure whether a dental istant is allowed to do this in Florida. I don't really want to go back to this dentist because he also doesn't followup on things that well and, like I said, is gone so much. Would appreciate any info. Thanks