Also known as: avulsed tooth, tooth completely knocked out, missing tooth after injury, tooth came out from trauma, knocked-out baby tooth, knocked-out permanent tooth

A knocked-out tooth in children is a dental trauma in which the entire tooth comes out of the socket after a fall, sports injury, collision, or other impact to the mouth. It can be alarming because there may be bleeding, crying, swelling, or a visible gap where the tooth used to be. Sometimes the tooth is found right away and looks intact, while in other cases it may be dirty, cracked, or missing at first.

What should happen next depends heavily on whether the tooth is a baby tooth or a permanent tooth. Baby teeth are usually not replanted, while permanent teeth may sometimes be saved if they are handled correctly and evaluated quickly. Prompt dental care helps reduce pain and bleeding, assess injury to the gums, lips, and nearby teeth, and determine the safest next step for your child’s smile and long-term oral development.

Possible Causes of a Knocked-Out Tooth

A knocked-out tooth is commonly associated with:

  • Falls and playground accidents – A hard fall from playground equipment, stairs, furniture, or while running can knock a tooth out completely if the impact hits the mouth directly.

  • Sports injuries or collisions – Contact during sports, rough play, or accidental collisions with another child can create enough force to dislodge a tooth from the socket.

  • Bicycle, scooter, or skateboard crashes – Face-first falls or sudden impacts during wheeled activities commonly lead to dental trauma, especially to the front teeth.

  • Blows to the mouth during active play – A swinging object, an elbow, or a direct hit to the mouth during play can knock out a tooth even when there is no major injury elsewhere.

  • A tooth already loosened or weakened before the injury – A tooth that was already loose from prior trauma, advanced decay, or root changes may come out more easily when another impact occurs.

Treatments for a Knocked-Out Tooth

Depending on the type of tooth and the injury, treatment may include:

  • Emergency Dentistry – When a tooth has been completely knocked out, emergency dental care helps determine whether it is a baby tooth or permanent tooth, control bleeding, and decide the safest next step as quickly as possible.
  • Crowns – If the same injury also leaves another tooth badly cracked, weakened, or structurally damaged, a crown may be used to protect it and restore strength after the trauma.
  • Fillings – Some knocked-out tooth injuries happen along with smaller chips or fractures to nearby teeth, and fillings can rebuild those damaged areas and smooth sharp edges.
  • Sedation – For children who are very frightened, uncomfortable, or unable to cooperate after a traumatic dental injury, sedation may help urgent care be provided more safely and comfortably.

When to See a Dentist

Seek prompt dental care if your child:

  • Has a tooth completely come out after a fall, collision, or sports injury
  • Has ongoing bleeding from the socket, gums, or lips after the tooth comes out
  • May have knocked out a permanent tooth, even if the pain seems manageable
  • Has swelling, trouble closing the mouth, or other facial injury after the accident
  • Cannot find the tooth or is unsure whether it was a baby tooth or permanent tooth

Related Symptoms

Concerned About a Knocked-Out Tooth?

A knocked-out tooth is often a sign that something needs attention. We’d love to evaluate your child’s symptoms and make their visit comfortable, positive, and stress-free. Schedule an appointment today and get the answers you need.