I never thought of reviewing this person until we moved out of town and needed a new dentist, who I think is great and makes my former dentist not so great.
Dr. Janzzen is not a very warm personality and abrupt. Not rude but will leave the room while your still talking. One gets the feeling he is burnnt out. My older son didn't like him and switched to a friendlier dentist. Maybe he is due to retire.
His work seems ok but a bit too pricey but my insurance helped.
I am sure he will be friendlier after he retires.