Q. I have previously (about a year ago) had microabraision on my two front teeth which have fluorosis (white stains). It reduced the appearance of one tooth but not the other. The dentist stopped the process as my teeth were getting too sensitive. I wanted to ask whether its worth trying again. I have spoken to a couple of dentists and both have given conflicting advice – one says it may work again and the other said if it didnt work on one tooth it means the stain is too deep in the enamel. The white stain looks brighter some days especially after i have brushed my teeth. I would appreciate your honest opinion,