You can take metronidazole and cephalosporin orally for tooth swelling. Metronidazole should not be taken for a long period of time, and if there is no effect after a few days, it is recommended to stop taking the drug and go to the hospital, and do not drink alcohol while taking cephalosporin. The main reason for the swollen teeth is inflammation of the gums. It is recommended to go to the hospital for a comprehensive examination, and if the inflammation of the gums is indeed caused by too much calculus, which results in the swelling of the flesh of the teeth, it is advisable to carry out ultrasonic scaling to thoroughly remove the calculus and plaque on the surface of the teeth. Normally, you must develop good hygiene habits, brush your teeth and rinse your mouth on time to avoid food residues remaining in the mouth to form new calculus to stimulate the gums.