April
May 2009
systemic disorders also can cause tooth discoloration.
congenital erythropoietic porphyria causes porphyrins to be deposited in teeth, causing a red-brown coloration.
blue discoloration may occur with alkaptonuria and rarely with Parkinson's disease.
erythroblastosis fetalis and biliary atresia are diseases which may cause teeth to appear green from the deposition of biliverdin.
also, trauma may change a tooth to a pink, yellow, or dark gray color.
pink and red discolorations are also associated in patients with lepromatous leprosy.
some medications, such as tetracycline antibiotics, may become incorporated into the structure of a tooth, causing intrinsic staining of the teeth.
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