My 9 year old has 2 stained teeth (front, upper, few patches of brown colour). He has suddenly become self conscious about it and wants dentist to fix it. Dentist saw the staining earlier this year, did not say much about what could be done, just said he would keep an eye on it, said it could be due to chromogenic bacteria. Unlikely to be food or hygiene related because scrupulous about brushing teeth, no coke, tea, ribena, etc . Is it worth bringing next dentist appointment forward and asking if anything can be done to improve the look of the teeth?