Hey Deca, May I say that you are very observant. You are correct my friend those are sutures. You see awhile ago I was going through my Gothic/Marilyn Manson/Vampire phase and I had my teeth chiseled into fangs and you know, in the moment of passion
you can get a little wild. Well one thing led to another and stiches were involved. Since then I have had them grounded down to almost resemble normal teeth. Well my friend you live and learn.