Facial swelling due to an infection in your mouth can become an emergency situation in 48 hours or less. The facial spaces in our heads can allow for infection to spread quickly. Without immediate dental treatment, you may find yourself sitting in the emergency room. This type of swelling is normally caused by an infection in the teeth or gums. Treatment for these situations can be root canal therapy, extractions or even swelling drainage. Antibiotics are often used in conjunction with these treatments; however, by themselves, antibiotics will not permanently fix the cause of the infection. This is why it is very important to see a dentist as soon as possible. Regular visits to the dentist twice a year can help prevent emergency dental situations and increase your chances of maintaining a healthy smile.