Over time, those pigments can accumulation and develop obvious staining on the surface of your teeth. Whitening therapy uses a whitening representative to eliminate the pigment from your teeth and return them to a sparkly, white state. If the staining on your teeth is intrinsic, it can’t be blonde by a whitening agent. Innate discoloration … Цялата публикация “Why Will Not My Teeth Whiten? All You Need To Find Out About Teeth Whitening”