The following reasons are considered for the swelling and swelling of the tooth flesh: 1. Inflammation of the gums, such as having gingivitis or periodontitis. At this time, the presence of more bacteria and calculus around the teeth will stimulate the gums to appear red, swollen, brittle and easy to bleed. In the clinical performance is the flesh of the teeth swell up, need to scaling treatment. 2, local appear food embedded, when there is food embedded in the gap between the teeth, the gum papilla will have more obvious round become more red and swollen, there is a slight swelling pain. This time, you need to floss and toothpick to clean out the embedded food thoroughly. 3, there may be chronic apical inflammation, apical inflammation, the flesh of the tooth will appear swollen locally, the tooth needs to be root canal treatment.