While healthy gums are pink and firm, swollen gums (also referred to as inflamed gums) tend to be red and puffy. They are often one of the early symptoms of gum disease.
The most common cause of swollen gums is plaque buildup around your teeth. It tends to develop when food particles linger in the mouth.
Unless the plaque is removed (usually by brushing and flossing), it can cause swollen gums around the tooth. This inflammation may lead to more serious problems like periodontitis.
There are other causes of swollen gums too, so it’s important to talk to your dentist if you have any concerns.