Q. Hello. I am 27 years old and have had fillings placed on many of my front teeth. My specific question is about teeth numbers 8 and 9. I feel the feelings are old (5 years) and they have small discolorations. I don’t mind the discolorations, but I don’t trust them. They don’t look bad until I shine a light on them and it’s like the stains get five times bigger and glow. I’ve asked my dentist and he tells me they are just stains. If they are stains I don’t care, but all my cavities have started with discolorations. I had a cleaning recently and the hygenist didn’t mention these at all, even when I asked she just said she didn’t know. The one actaully has a very small brown groove I can catch my fingernail in. Should I get a second opinion? Also, on the one tooth, from what I can tell, the “stain” is surrounding the edge of the filling. I would hope that my dentist would understand my worry concerning cavities on these teeth, but I don’t know if he actually cares. And if you could, can you tell me if a previous composite resin has to be completely removed for a new one to be placed?