I've had a little damage to the tips of a couple of nail beds over the years.if someone loses a slice of tip above the nail there is a good chance it will grow backIt did.
In fact I can't even see or remember which finger it was now, after all these years.
One, I touched the tip of the finger with a bandsaw about 30 years ago.
It did heal, but I think I ended up with a little scar tissue under the nail, and it has never been quite perfect. A slightly weaker nail, or a good place to get slivers or pieces of grass under the nail.