I heard from a source that a kind of vitamin deficiency leads to weak and yellowish teeth, is it true? Well one of my friend has yellow teeth, He regularly brushes his teeth twice a day, but no result. Is it possible to get white teeth without any loss?
Thanks and awaiting for kind response.
Bleaching or whitening pens are available on the market for spot whitening, or you can try home whitening systems to improve the color of your teeth. These can prevent further yellowing, and may reverse the effects totally. The best way to completely reverse the process is to visit your dentist for some cosmetic dentistry procedures.