Contact your pediatric dentist as soon as possible. To comfort your child, rinse the child’s mouth with warm salt water. Give the child age-appropriate over-the-counter acetaminophen for any pain, and be sure to follow its dosage instructions. Do not place aspirin on the teeth or gums. Do not place heat on sore area. If the face is swollen, place a cold pack on the swollen area. Finally, see a dentist as soon as possible.