Hi, I have white bumpy lines right at the crease where the gums meet the cheeks on the right and left side of my mouth. I was wondering if this could be linea alba even though its not where the teeth meet, or maybe just an irritation? I didn t notice anything until a few days ago, but once I used listerine it began to burn a bit as if it were a canker sore. All i really feel normally is a bit of pressure anytime my cheeks move, no real pain. Thanks, Sean.