Swollen gums on the end teeth can be treated with a topical rinse, and severely blocked teeth can be extracted. Swollen and painful gums on the end teeth are a common form of pericoronitis in wisdom teeth. The terminal tooth, also known as the wisdom tooth or third molar, is the last to erupt in the mouth. The tooth eruption process is often accompanied by varying degrees of obstruction due to lack of space. The gums cover part of the tooth to form a blind pocket, and if not cleared by timely brushing and rinsing after eating, bacteria can breed in this location and cause swollen and painful gums. Topical treatment can be done by rinsing with hydrogen peroxide and then applying iodine glycerin. In severe cases, oral anti-inflammatory drugs, such as metronidazole, can be taken. If the gum blockage is not serious, the gum can be cut to help the end tooth erupt. After the tooth is fully erupted, the blind gum pocket disappears and the gum swelling and pain can be relieved by local rinsing and medication. For severely blocked end teeth that cannot erupt on their own, or if the eruption process produces compressive resorption of the front teeth, or if wisdom teeth have recurrent pericoronitis and frequent gum swelling and pain, the end teeth can be extracted after the inflammation subsides. Therefore, swollen and painful end teeth can be relieved by local rinsing and medication, and those with severe obstruction can be extracted after decreasing inflammation.