i thought grafting would last longer than 5 years. one dentist was talking about taking skin from cadavers as well as from my own mouth.
i heard about Apagard toothpaste in June. the cost was very high. but i think the price decreased recently so, i have just purchased the Apagard Royal toothpaste from ebay. this could help close the cracks and thus eliminate the stains.
also the manufacturer of the clay product for swishing is sending me a toothpaste (no name given) which they personally tested and elminated the discoloration.
it does not look that bad- but i like a clean set of teeth.