I had one dentist tell me I needed 6 cavities filled. Let him do two and then went to another dentist who told me all my teeth were good. I've only ever had problems with the two teeth the first guy drilled.
Later a dentist wanted to drill another few teeth that were hurting. I instead got a better toothbrush and all the issues went away.
I Denmark we're talking about including dentistry in the national healthcare. I wonder if that will clean up the business or make it worse.
I've been getting told my wisdom teeth need to be pulled out for the last 20 years for example, never touched them, no issues.
- there are clinical parameters what is OK / not OK and needs treatment, other stuff for upgrading like veneers are in a different bag. But those are good examples: While quite expensive and revenue driving, a good dentist wont try to sell them to you because with prep-veneers the teeth will get "damaged" by taking of 0.1mm from their surface, thus hurting natural material - and a good dentist tries to preserve everything natural as long as possible, unless he/she is a scammer.