For a completely knocked-out permanent tooth: pick it up by the crown (not the root), rinse gently if dirty, try to reinsert it into the socket, and get to an endodontist immediately — the survival window is roughly 30 to 60 minutes. For loosened, displaced, or cracked teeth from sports, seek same-day evaluation without moving the tooth.
A tooth injury from sports requires immediate action, especially a knocked-out tooth, where prompt replantation gives the best chance of saving it. For a completely knocked-out permanent tooth: pick it up by the crown (not the root), rinse gently if dirty, attempt to reinsert it into the socket, and get to an endodontist or emergency dentist right away.2 For other injuries, loosened, displaced, or cracked teeth, avoid touching or moving the tooth and seek same-day evaluation. Fast, appropriate first response improves the long-term outcome, because the longer the root stays outside the socket and dry, the more the supporting ligament cells are harmed.1
Dental injuries in sports are more common than most athletes and parents realize. Sports-related dental trauma accounts for a meaningful share of all dental injuries, and unlike many other injuries, the window for the most successful treatment is measured in minutes, not days.1
Knowing exactly what to do in the first moments after a dental sports injury can be the difference between saving a tooth and losing it permanently.
Knocked-Out Permanent Tooth. Act Quickly
Types of Sports Dental Injuries and What to Do
Avulsion (Completely Knocked-Out Tooth)
The entire tooth including root is displaced from the socket. Only occurs with permanent teeth, primary (baby) teeth are NOT replanted as this can damage developing adult teeth. Follow the emergency protocol above. Root canal treatment is almost always required after replantation.2
Intrusion (Tooth Pushed Into the Bone)
A tooth pushed upward into the socket by impact, appears shorter than neighbors. One of the most serious dental injuries. Requires urgent specialist evaluation. Depending on severity and patient age, treatment may involve allowing spontaneous re-eruption, orthodontic repositioning, or surgical repositioning, followed by root canal treatment.2
Luxation (Tooth Loosened or Displaced)
The tooth is still in the socket but has been loosened, tilted, or moved laterally. The periodontal ligament has been partially torn and the pulp (the soft living tissue inside the tooth, containing nerves and blood vessels) may be compromised. Treatment involves repositioning and splinting (temporarily bonding an injured tooth to neighboring teeth to hold it stable while it heals) (bonding to adjacent teeth for stability). Root canal treatment may or may not be needed depending on pulp response over time.2
Crown Fracture with Pulp Exposure
A broken tooth where the pink pulp tissue is visible at the fracture site. Urgent evaluation is needed, the exposed pulp is vulnerable to infection. In appropriate cases, pulp capping may preserve pulp vitality (whether the living tissue inside the tooth is still healthy and functioning). Root canal treatment is often required. A permanent crown will be needed once pulp status is confirmed stable.2
Uncomplicated Crown Fracture (No Pulp Exposure)
A chip or fracture of enamel (the hard outer shell of the tooth, the hardest substance in the human body) and dentin (the layer of tooth beneath the hard enamel, softer and more sensitive, containing microscopic channels that connect to the nerve) without visible pulp exposure. Less urgent but still requires evaluation, the fracture may be deeper than it appears, and exposed dentin is sensitive and vulnerable to bacterial infiltration. Treatment typically involves bonding or a crown; root canal treatment may be needed if the pulp becomes inflamed over time.2
Concussion (No Movement, Tender to Touch)
The tooth has been jarred by impact but not displaced. It may be sore to bite or touch but is firm in the socket. No immediate intervention typically needed, but the tooth should be monitored for pulp changes over the following weeks to months, some concussed teeth develop pulp necrosis (tissue death, when the living tissue inside a tooth dies due to infection or loss of blood supply) (death of the living tissue inside the tooth) gradually even without initial displacement.2
Preventing Sports Dental Injuries
Replantation timing is the strongest predictor of avulsed tooth (a tooth that has been completely knocked out of its socket) survival. In a study of 400 avulsed and replanted permanent incisors published in Endodontics & Dental Traumatology, the length of the dry extra-alveolar storage period and immediate replantation were among the factors most strongly related to healing of the periodontal ligament, and the authors recommended immediate replantation in every case.1 The current International Association of Dental Traumatology guidelines build on this evidence, advising rapid replantation when possible and storage in milk, saliva, or saline rather than water when it is not.2 These findings are why fast, calm first aid at the field matters so much: the supporting ligament cells stay viable only while the root is kept moist and out of the socket for as short a time as possible.1
Works Cited
- Andreasen JO, Borum MK, Jacobsen HL, Andreasen FM. Replantation of 400 avulsed permanent incisors. 4. Factors related to periodontal ligament healing. Endod Dent Traumatol. 1995;11(2):76-89. doi:10.1111/j.1600-9657.1995.tb00464.x Prospective Study
- DiAngelis AJ, Andreasen JO, Ebeleseder KA, et al. International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: 1. Fractures and luxations of permanent teeth. Dent Traumatol. 2012;28(1):2-12. doi:10.1111/j.1600-9657.2011.01103.x
- Fernandes LM, Neto JCL, Lima TFR, et al. The use of mouthguards and prevalence of dento-alveolar trauma among athletes: a systematic review and meta-analysis. Dent Traumatol. 2019;35(1):54-72. doi:10.1111/edt.12441 Systematic Review