Dental accidents       Contact sports, such as rugby and hockey, are obvious activities that contribute to dental accidents and emergencies. The use of mouthguards and faceguards can help protect teeth and gums. But once an accident has occurred, correct first-aid treatment on the spot is essential to help limit the damage done. The following steps should be taken if a permanent tooth has been knocked out of its socket:       If a permanent tooth is knocked out:     Hold the tooth by the crown (the part usually visible in the mouth) without touching the root.     If the tooth is dirty, do not scrub it or put it in disinfectant. Simply rinse it in milk or cold water.     When the tooth is clean, hold it by the crown and gently push it back into its socket making sure that it is the right way round. This is usually painless if done immediately after the accident.     Use a piece of gauze or a clean handkerchief to gently bite down on, this will help control bleeding in the gum.     Go to the dentist immediately for advice.       If the tooth cannot be re-implanted:     Place the tooth in a cup of milk. If milk is not available, place the tooth in the mouth between the cheeks and gums. Do not place the tooth in disinfectant.     It is important not to let the tooth become dry.     Go to your dentist immediately. If this isn’t possible, phone casualty and ask which is the nearest casualty department with a dentist on call.     24-hour Helpline: If you have difficulty contacting a dentist you can telephone the 24-hour Emergency Helpline and we will help you find a dentist, wherever you are.       To contact our Emergency Helpline call:   UK Telephone 0800 844 999   Overseas Telephone 0044 1962 844 999