There’s nothing in the dentist’s office that was there fifty years ago. Every device, every compound, every technique has been changed.
Bit by bit. Involving thousands of people and organizations. Improvements large and small (mostly small), in every corner.
And every one of those improvements was met with resistance. Every change was fought, tooth (!) and nail. Every one had critics and skeptics and hold outs.
That’s how the world changes. By drips. Persistent, generous, tiny drips.