Okay, this is the Teeth Shader I put together based on what I have found on the web.  Someone wanted a close approximation of teeth enamel for a model he was constructing.  Modify it any way you like, personally, I think that the roughness on the Glossy node should be slightly increased, the teeth will appear too reflective.  I'm including the RGB for the colored chips although, again. modify it to personal taste.  The Mapping and Texture Coordinate nodes are present but are not necessary.  

As a side note, I think the SubsurfaceScattering scale is too high, you will get self-illumination if you leave it as is.  I recommend bringing that value down to 0.015 to start and work your way up incrementally until you're satisfied.  The SSS Radius is set to 1 which gives you a white color value, play with it if you want a different color transmission.  

                                                                

If you decide you want to plug in a color map, run the node through an HSV for better color control.  I might play with Ambient Occlusion with this shader because you might want some darkening between the teeth but I can't guarantee it will work as expected.