[Dr Winston O Boogie jr]

Back in my former life, I had several clients and friends who were dentists. What they told me was that because of fluoride in the dentifrices, education about flossing and fluoride mouth washes, people don't get anywhere near the cavities that they used to get. This "drill and fill" work was a huge part of most dentists business.
Some dentists have gone back for education and gotten certified to do root canals and crowns and bridges and other things the average dentist wouldn't do years ago.
Some dentist, however have simply tried to increase their business by "finding" more problems with their patient's teeth.
I think that it's important to report some of these things to the proper government agencies. Otherwise these less than ethical people will never be shut down.