My dad practiced dentistry since the 70s and never digitized his office. Every patient had a folder. There was a phone, a typewriter, and a calendar. I don't know how insurance claims worked, maybe by post.

When I moved to New York I was surprised to find a dentist whose practice was much the same, though he did have a few computers around. He retired recently.

Computers no doubt can improve things; a lot of it seems like a no-brainer. But I'm starting to doubt that they're there to improve things.