Changes

'''Foods''': charcoal biscuits can penetrate pits and fissures in the enamel, green from foods containing abundant chlorophyll.

'''Foods''': charcoal biscuits can penetrate pits and fissures in the enamel, green from foods containing abundant chlorophyll.

'''Dental restorative materials''': black-grey from amalgam

'''Dental restorative materials''': black-grey from amalgam (rare in animals)

'''Medications''': black from products containing iron or iodide, yellow-brown from products containing sulfide or silver nitrate, green from products containing copper or nickel, golden brown from products containing cadmium.

'''Medications''': most commonly tetracyclines given prior to development of the permanent teeth.

'''Metal''': wear from chewing on cages or from removed endodontic bands or wires

'''Metal''': wear from chewing on cages or from removed endodontic bands or wires

'''Discoloured restorations'''  

'''Discoloured restorations'''