Dental emergencies are dental issues that require prompt treatment from a dentist. Tooth injuries, such as cracking a tooth or having one knocked out, are common dental emergencies. Tooth abscesses, which are infections that can establish if dental caries aren’t treated, are also sometimes considered emergencies. A tooth abscess can cause an extreme toothache, face swelling, difficulty breathing or swallowing and also blood poisoning– every one of which require prompt focus.