Changes

===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.

 

'''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.

 

'''Dental fluorosis''': excess fluoride consumption leads to enamel hypoplasia with black edges. The enamel is lusterless and has yellow-brown zones of discolouration.

===Internal Resorption===

===Internal Resorption===