A knocked-out tooth is one of the most time-sensitive dental emergencies you can face. Whether it happens during sport, a fall, or an accident at home, the steps you take in the first 30 minutes can significantly influence whether the tooth can be successfully replanted.
This guide walks you through what to do, step by step, and what to expect if you need urgent dental care in Brisbane.
How a Tooth Gets Knocked Out
Dentists refer to a fully knocked-out tooth as an avulsed tooth. The tooth is displaced completely from its socket, including the root. Common causes include:
- Contact sports -- rugby, AFL, basketball, cricket
- Falls -- particularly in children and older adults
- Accidents -- cycling, skateboarding, collisions
- Biting into hard objects unexpectedly
An avulsed permanent tooth is a genuine dental emergency. Baby teeth that are knocked out are typically not replanted, but a permanent tooth may be saved if you act quickly and handle it correctly.
Step-by-Step First Aid for a Knocked-Out Tooth
Time matters. Follow these steps in order.
Step 1: Stay Calm and Find the Tooth
Locate the tooth as quickly as possible. Check the ground, clothing, or inside the mouth (be careful not to swallow it). If there is bleeding, have the person bite down gently on a clean cloth or gauze.
Step 2: Pick It Up by the Crown Only
This is critical. Handle the tooth by the crown (the white part you normally see) -- never by the root. The root surface contains delicate cells called periodontal ligament cells. Damaging these cells may reduce the likelihood of successful replantation.
Step 3: Gently Rinse If Dirty
If the tooth has visible dirt on it, rinse it gently under milk or saline solution. Tap water can be used briefly if nothing else is available, but avoid scrubbing the root or using soap, chemicals, or disinfectant. Do not wrap the tooth in tissue or let it dry out.
Replanting and keeping the tooth moist
Step 4: Try to Replant the Tooth (If Possible)
If the injured person is alert, cooperative, and old enough (generally adults and older teenagers), try to gently push the tooth back into the socket. Align it with the neighbouring teeth and have the person bite down gently on a clean cloth to hold it in place.
Do not force it. If it does not go in easily, move to Step 5.
Step 5: Keep the Tooth Moist
If you cannot replant the tooth, place it in one of the following -- listed in order of preference:
- Milk (full cream, cold) -- milk is generally considered an effective and readily available storage option
- Saline solution (contact lens solution works)
- Saliva -- the person can hold the tooth gently inside their cheek (only for adults, not suitable for young children due to choking risk)
- Water -- as a last resort only, and for the shortest time possible
Do not store the tooth in a dry container, wrap it in tissue, or leave it exposed to air.
Step 6: Get to a Dentist Within 30 Minutes
The window for successful replantation is narrow. Research suggests that teeth replanted within 30 minutes generally have a higher chance of survival. After 60 minutes, the likelihood of the tooth reintegrating with the bone decreases significantly.
Arrange emergency dental care immediately. Book online at any time and, during opening hours, call (07) 3266 7120 for phone triage and booking help. Because a knocked-out permanent tooth is time-critical, contact another emergency dental provider if no immediate appointment is available.
When to Seek Urgent Dental Care
See a dentist immediately if:
- A permanent tooth has been completely knocked out
- A tooth is partially dislodged (loose, pushed in, or shifted to one side)
- There is heavy bleeding that does not stop with gentle pressure
- You suspect a broken jaw or facial fracture (go to the emergency department)
- A large piece of tooth has broken off, exposing the inner layers
Even if you successfully replant the tooth at the scene, you still need to see a dentist urgently. The tooth will likely need to be splinted to the neighbouring teeth and monitored over the following weeks.
For more detailed information on dental emergencies and how we handle them, see our dental emergency guide.
Call Ivy Dental immediately if a tooth has been knocked out: (07) 3266 7120
What Happens When You Arrive at Ivy Dental
Here is what you can typically expect during an emergency visit for a knocked-out tooth:
Assessment
Your dentist will examine the tooth, the socket, and surrounding structures. A dental X-ray is usually taken to check for root fractures or damage to the bone.
Replantation and Splinting
If the tooth has not already been replanted, your dentist will clean the socket gently and position the tooth back in place. A flexible splint -- a thin wire bonded to the neighbouring teeth -- is typically applied to hold the tooth steady while it heals. This splint usually stays in place for 7 to 14 days, depending on the type of injury.
Follow-Up Plan
Your dentist will outline a follow-up schedule. This typically includes:
- A review appointment at 1 to 2 weeks to remove the splint
- Further check-ups at 4 weeks, 8 weeks, and 6 months
- Root canal treatment may be needed in some cases, particularly if the tooth's nerve does not recover
The long-term outcome depends on how long the tooth was outside the mouth, how it was stored, and the extent of damage to the root and bone. Individual outcomes vary depending on clinical circumstances.
Tips to Help Protect Your Teeth
While you cannot prevent every accident, a few precautions may reduce your risk:
- Wear a custom mouthguard during contact sports -- custom-fitted guards typically offer more protection than over-the-counter options
- Avoid using teeth as tools -- do not open bottles, tear packaging, or crack nuts with your teeth
- Address loose or damaged teeth early -- weakened teeth may be more vulnerable to trauma
What If the Tooth Cannot Be Saved?
In some cases, replantation may not be successful. If a permanent tooth is lost, your dentist can discuss replacement options, which may include:
- Dental implants -- a titanium post placed in the jawbone that supports a ceramic crown (see our implant cost guide for pricing)
- Dental bridges -- a fixed prosthetic anchored to the neighbouring teeth (compare implants vs bridges)
- Partial dentures -- a removable option that may suit certain situations
Each option has different considerations around cost, timeframe, and suitability. Your dentist will help you understand which approach may be appropriate for your situation.
Act Quickly -- It Makes a Difference
A knocked-out tooth is one of the few dental injuries where your first aid response directly influences the outcome. Pick it up by the crown, keep it moist, and get to a dentist as fast as you can.
If you or someone near you has knocked out a permanent tooth, book emergency care online at any time and call Ivy Dental during opening hours. Appointment timing depends on clinical urgency and clinic capacity, so use another emergency dental provider if no immediate appointment is available.
For a full overview of dental trauma and urgent care, visit our knocked-out tooth guide. If you have missing teeth from a previous injury, we can discuss permanent replacement options at a consultation.
Book an emergency consultation at Ivy Dental | Call (07) 3266 7120
