Human Skull

It’s been quite a while since I posted.
Here’s a Skull I was making while I was on a Halloween theme. I finished it a little bit late, but oh well.
I did a radio render on the subsurfaced mesh, and I got some artifacts on the corner teeth. Not sure what’s causing it - I checked, and there aren’t any non-manifold mesh elements, and all the normals are pointing out.

Any ideas?

Nice skull. I think you can fix that either with ctrl N, in edit mode, or, in face select mode, right click the offending faces and press double sided in the texture buttons next to the vertex paint buttons. <edit> if you are UV mapping an object these faces will appear invisible.