question: I had some food stuck between a tooth, it was uncomfortable. So I flossed it. Now I have a pain lower on my gums near my roots. It isn't swollen, doesn't hurt to chew or drink. It does hurt when I touch it or my lips brush up against it when I talk. I noticed a white line today in the area. It is -near- but not at a tooth I had a root canal done on, 3 months ago. My dentist asked I see the endodontist. But I don't think it has much to do with the same tooth.