Whitening teeth to choose appropriate therapy.

Now, there are more and more people because their teeth white , so many people choose to do to the teeth or beauty. However, to the teeth or beauty should be against their own teeth or the basic conditions, select the appropriate way to get the best results. First of all, should be aware of their teeth white enough reason. In medicine, a simple tooth color yellow, dark color, such as collectively referred to as dental coloring. It generally divided into endogenous and exogenous coloring two. To put it simply, is that exogenous colored teeth "extrinsic stain", mainly due to food coloring pigment, such as smoke stains caused. And endogenous coloring, is due to the teeth or a certain period of taking drugs or drinking water quality and other reasons leading to tooth color anomaly, a common tetracycline stained teeth and dental fluorosis.