dentinogenesis imperfecta, a defect of the dentin that causes discoloration and loss of enamel
extrinsic enamel coloration due to liquid iron supplements administered for anemia or due to plaque or stains adhering to calculus, hard mineral deposits on the crowns and roots
intrinsic enamel coloration due to pigments carried in the blood from tetracycline or other drugs or from excessive fluoride
Illness or trauma during infancy or early childhood, including infections, high fever, malnutrition, or disorders such as congenital syphilis or Down syndrome, can cause misshapen or discolored teeth. Both the baby teeth and the permanent teeth are usually affected, particularly the eight front teeth and the six-year or first molars. Crowns may be pitted, grooved, and discolored.
Margaret Alic PhD, Thomson Gale, Gale, Detroit,