I’m a newbie with custom shaders and I need map this blender material to a unity shader, but I have no idea how a can do it. So any help will be good =)
this Material uses Subsurface Scattering, which is not only a shader, but a technique where two lightmaps (front and back, as seen from the light source) are rendered, changed and then applied to the objects again. So it is not only a shader. You would need OpenGL commands for this, and this is a Unity Pro feature.
BTW This is nothing you would do with teeth in a real-time simulation like a game.
Try to find a approximation to the desired effect with an existing Unity shader. Or try the (free) hard surface shaders in the Asset store.