Yellow teeth is healthy！

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Whether teeth are healthy do not depend on the white degree of teeth. Crown’s surface is covered with a layer of enamel which is the color of tooth. Adults’ enamel due to normal calcification is a translucent. The color of healthy dentin is translucent yellow. If the calcification level of enamel is lower, the color of teeth may be white, milky white, black. If your teeth does not have the disease, only the color is yellow, do not intentionally go whitening teeth. We all know the toothpaste is made up of powder friction agents, wetting agents, surfactants, adhesives, spices, sweeteners, and other special ingredients. Powder friction agents include calcium carbonate, calcium hydrogen phosphate dehydrate and calcium hydrogen phosphate, calcium pyrophosphate, hydrated silicic acid, [url=http://www.lookchem.com/ALUMINUM%2DHYDROXIDE/]aluminum hydroxide[/url]. If you use whitening toothpaste frequently will damage the enamel. keep teeth be the natural color, your teeth will be healthy.