Red, swollen and painful teeth are considered to be related to poor oral hygiene, gingivitis, wisdom teeth, etc., which can be relieved by scaling, medication and surgery. 1. Oral hygiene is not in place: usually do not pay attention to oral hygiene, teeth cleaning is not in place, food is easy to Dun plug in the teeth, causing redness, swelling and pain in the teeth, you can use dental floss and other dental tools after meals, to master the correct way of brushing, if the formation of dental calculus, can be through the scaling and other ways to alleviate the symptoms. 2. Gingivitis: Inflammation of the gum tissue caused by plaque, calculus and other stimuli, causing repeated gum congestion, edema, pain, etc., can be given cefixime, metronidazole and other drugs as prescribed by the doctor for systemic treatment, can be relieved by scaling treatment. 3. Wisdom teeth: If the growth of wisdom teeth is impeded or affects other teeth, the teeth may also appear pain, redness and swelling, etc., can be rinsed with saline, anti-infective and other treatments, and then surgically remove the wisdom teeth after the elimination of inflammation to alleviate the symptoms. Red, swollen and painful teeth may also be caused by other reasons, it is recommended to go to the hospital in a timely manner, after a clear diagnosis and treatment, to avoid delaying the condition and causing other damage.