title: The dark primary incisor.
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007180:Incisor / Q000293:injuries*; D011379:Prognosis; D014071:Tooth Abnormalities / Q000209:etiology; D014075:Tooth Discoloration; D014094:Tooth, Deciduous / Q000293:injuries*