My general purpose saw blade is a 10-inch Freud Industrial 50T combination blade. A couple of weeks ago, in a short quarantine project, I missed three drywall screws in a piece I was recycling and cut them. A few sparks when sawing prepared my spirit for the worst.
Surprise! I couldn't find any marks in the teeth. Even with a magnifying lens. Wow!
Hats off to Freud!