Hello, the other day I noticed a filling had fallen out, from what I know was a filling, after I noticed, it felt like a piece of food was stuck where the filling was so when I got home, I brushed and flossed and noticed the piece of food was still there so now I m beginning to think it s the nerve or some type of decay. I just wanted your opinion from what information I gave you. I made a dentist appointment with my local dentist but I rather know now what it could be as it makes me wonder let alone, worries me before my appointment. Thanks you, Chris