What kind of metabolic disorders cause yellow teeth?

Yellow teeth. I would start by consulting your own dentist and venture a guess that the source of your yellow teeth, while possible, is not related to any metabolic disorders. Having said that, see the following website to answer your question: http://dentalresource.Org/topic53stainedteeth.Html.
Yellowing teeth. Adult yellowing of teeth is unlikely caused my a metabolic disorder. Aging thickens the internal dentin of teeth creating the appearance of yellower teeth. In newborns yellowing may be caused by a pediatrician use of tetracycline antibiotics. They will only do so as a last resort. Lastly there is a genetic formation flaw called ameliogenisis imperfecta that causes yellowing teeth.