Dentin makes up the main portion of the tooth structure. In primary teeth, it's very light yellow - almost white so that it doesn't show as much through the translucent white enamel. In permanent teeth, it is a light yellow and commonly darkens with age. It also takes up more tooth structure in an adult tooth than a baby tooth. The enamel remains translucent - you just see the dentin underneath. The darker the dentin, the more yellow your teeth are.
Why are baby teeth whiter than adult teeth?
Well, for one thing, they are newer. They haven't been exposed to all the things that stain adult teeth.
Reply:No coffee, no tea, no chocolate, no blueberries, no red wine...
Reply:the teeth are kind of like crystals. It takes time for chemicles to get into them and change teh colors. Plus not to many babies are out drinking huge amounts of coffee, sodas, or smoking cigarettes.
Reply:cuz they are brand spankin new
Reply:Depends what food you eat - if you smoke..
If you ate as healthily as a baby, then they would be just like baby teeth.
Reply:I'm a dentist.
Less dentin underneath the enamel. Enamel is actually translucent white. It's the dentin beneath that makes your teeth have a yellow hue.
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