Over the years I have lived in several places and had a variety of dentists and one common theme that sticks with me, the nicer and higher tech the office is, the more procedures they are going to recommend you. They need to pay for the equipment and office somehow.
I've had one dentist say I need 3 cavities filled. That I needed laser treatments, extra cleanings, etc. They made it sound like my teeth were going to fall out of my head. I was going to Brazil in a few months and so i decided to wait until I was there to get the work done.
The dentists there took xrays, etc and didn't find any problems. I even went to another dental clinic and the same thing. They had no idea what that dentist thought was wrong.
When I came back to the states i went to another dentist. Instead of being on a top floor with an army of technicians and the fanciest machines like the first one, this dentist had a small older office. He did the cleanings himself and again he found no problems and told me I had very healthy mouth and gums.
This has happened to me before when i went away to college my childhood dentist said I had cavities that I needed to fill. When i got to college and went to the dentist there, they couldn't find a problem.