Is this ok to use?

It will probably be fine. Get a magnifying glass on it and look for any cracks. If there are none, file the sharp edges with a file and let her rip. Too bad people aren't more thoughtful when packing parts.

X2, just smooth the sharp edges and it should be fine if there isn't any cracks that go deeper into the tooth.
Mototool with a sanding drum works great for that.