One thing is evidence based medicine, another just simple greed: I like this older study from Switzerland where they sent the same healthy guy to 180 dentists,

One thing is evidence based medicine, another just simple greed: I like this older study from Switzerland where they sent the same healthy guy to 180 dentists, about 30% of whom performed unnecessary treatments, often on different teeth. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3036573 https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3036573