Doesn’t everyone dream of having beautiful white teeth? Children are the only ones whose teeth are naturally pearly white. Along with the process of aging, the color of our teeth changes. But age is not the only factor. What we eat and our lifestyle also affects the color of our teeth. Smoking, drinking coffee and tea causes teeth to be yellow. People with unaesthetic yellow teeth are less likely to smile. Every patient who intends to perform a whitening procedure must know that teeth whitening is a very safe and most of all efficient procedure. However, for the effects to last it must be repeated periodically.