How can you tell if a crooked nose is a result from trauma or from birth?

When I was really young, I went up to a sleeping dog and tried to pet it. It just up right to my face and bit me. I still have tooth marks in between my eyes where the ridge of my nose starts. When I was younger, me nose seemed to be developing normally but as I got older, I have a large sudden bump on my nose--it's a bone too.