Why Your Teeth Whitening Isn’t Working: Intrinsic vs. Extrinsic Stains
You have tried whitening strips, whitening toothpaste, and maybe even a professional treatment. Yet your smile still looks dull or discolored. If you are wondering why your teeth whitening isn't working, intrinsic vs. extrinsic stains in Boca Raton could be the answer. Not all stains respond to whitening the same way — and understanding the…