To explain, a dental emergency can occur to the gums, soft tissue in your mouth, jaw, as well as your teeth. Tooth Knocked Out. ... What if my tooth cannot be saved? ... Broken, Chipped or Cracked Tooth. ... Toothache Pain. ... Tooth Abscess. ... When To Contact Your Dentist. What is the most common emergency to occur in the dental office? Syncope Syncope is the most common emergency seen in dental offices (50% to 60% of all emergencies).