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The enamel covering of teeth is a milky white translucent crystalline structure. To a degree, it will allow the color of the underlying dentin to show through. The dentin may range from yellow/brown, through cream, to nearly white. Consequently depending upon how yellow the dentin is and how thick the enamel is, teeth will be varying shades of white. (As an aside, you cannot bleach the dentin any whiter than it is, and therefore, it is a limiting factor in bleaching teeth). So, if animal has thick enamel and relatively light dentin, their teeth will be relatively white. Another factor is diet. The typical diet of most mammals (other than humans) consists of heavily fibrous, tough foods which serve to debride the teeth of any discoloring materials and films that might have otherwise accumulated. And they donít smoke or drink tea and coffee!Sal Napoli, DDS, MD Florham Park, NJ
Hi, my name's Kwesi and I'm from London.My question is, are we the only species which practises dental care?