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→Intrinsic Staining
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'''[[Hyperbilirubinaemia]]''': affects all teeth, occurs when dentin is being formed and [[bilirubin]] accumulates in the tooth. Lines of resolution may be seen on the teeth if the problem is solved during dentin development
−'''Infectious agents''': [[:Category:Parvoviridae|parvovirus]] and [[Canine Distemper Virus|distemper virus]] especially affect the formation of enamel. There is '''enamel hypoplasia''' and the pitted areas have black edges and the dentin is brownish.
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−'''Dental fluorosis''': excess fluoride consumption leads to enamel hypoplasia with black edges. The enamel is lusterless and has yellow-brown zones of discolouration.
===Intrinsic Staining===
===Intrinsic Staining===
−'''Red blood cell destruction''': following traumatic injury to the tooth. Haemoglobin breakdown in the pulp from a pulpitis, which progresses from pink to grey to black.
'''Red blood cell destruction''': following traumatic injury to the tooth. Haemoglobin breakdown in the pulp from a pulpitis, which progresses from pink to grey to black.
−'''Amelogenesis imperfecta''': developmental alteration in the structure of the enamel, giving a chalky appearance and a pinkish colour to all teeth.
+'''Amelogenesis imperfecta''': developmental alteration in the structure of the enamel, giving a chalky appearance. The teeth may appear pinkish in colour due to the visible pulp through the poor quality enamel.
−===Internal Resorption===
===Internal Resorption===