That’s why your gums get swollen if you don’t remove the plaque every day. Your mouth is full of mucous membranes too. If you leave it there long enough, those mucous membranes are going to get really red, really irritated, and really swollen. But if you don’t floss or maybe you don’t spend enough time with your toothbrush along your gums, it’s easy for that plaque to trigger an immune response. Now normally, you’re supposed to be brushing for two minutes twice a day and flossing between your teeth every day to remove all of that biofilm. Usually, it’s because of issues like: 1) Inadequate Brushing and Flossing:ĭental plaque, which is that sticky white film that collects along the edges of your gums day after day, needs to be cleaned off.