A knocked-out tooth is one of the few true dental emergencies where minutes change the outcome. The right first-aid steps, done quickly, are the difference between saving the tooth and losing it for good. At Dentist Pymble, we keep emergency slots open each day so patients in Pymble, Gordon, Turramurra and the surrounding Ku-ring-gai suburbs can be seen fast when something like this happens.
This page covers exactly what to do in the first 30 minutes after a tooth is knocked out, what happens when you arrive at our practice, what changes when it is a baby tooth rather than an adult tooth, and the practical steps that stop the next dental injury.
What should I do immediately after a tooth is knocked out?
Pick the tooth up by the crown (the white chewing part), not the root. If it is dirty, rinse it briefly with milk or saline for no more than 10 seconds — do not scrub it, do not use soap, and do not let it dry out. Try to put the tooth back into its socket in the mouth, then have the patient bite gently on a clean cloth to hold it in place. If that is not possible — for example, with a young child or an unconscious patient — store the tooth in milk, saline, or inside the cheek against the lower molars, and head straight to an emergency dentist.
Time is the single most important variable: a knocked-out permanent tooth has the best chance of being saved if it is replanted within 30 minutes of the accident. After that window, the cells on the root surface start to die and the long-term success of the replant drops sharply.
How long do I have to replant a knocked-out tooth?
The honest answer is that the sooner the better. Up to about 30 minutes is considered the ideal window, with success rates of around 85-95% if the tooth has been stored in a suitable medium. From 30 to 60 minutes the odds begin to fall. Beyond 60 minutes of dry time, the periodontal ligament cells that anchor the tooth into bone are largely no longer viable, and the tooth can still be replanted but the long-term outlook is much less predictable.
Two things move the odds back in your favour if the tooth has been out of the mouth for longer: keeping the root surface moist the whole time (milk is the best everyday option), and not touching, scrubbing or sanitising the root. Anything that removes the delicate periodontal ligament from the root reduces the chance of successful reattachment.
Can a baby tooth be replanted?
No. Baby teeth are never replanted, because the act of pushing the tooth back into the socket can damage the developing adult tooth bud sitting underneath. The right response for a knocked-out baby tooth is to find the tooth if you can (to confirm it is not still in the mouth or pushed up into the gum), control any bleeding with gentle pressure from a clean cloth, and arrange an urgent dental check. If there is bleeding that will not stop, swelling, or any change in the child’s bite, head to the emergency dentist at our Pymble practice the same day.
The dentist will check the socket, the surrounding teeth and the developing adult tooth, usually with a small x-ray. If the baby tooth is missing and cannot be found, a chest x-ray may be recommended to make sure the tooth has not been inhaled.
How is a knocked-out tooth treated at the dentist?
If the tooth has come to the appointment in milk or has already been replanted, the dentist will reposition it carefully and splint it to the neighbouring teeth using a thin wire or composite splint. The splint stays in place for around 1-2 weeks to let the periodontal ligament heal, and during that time you will need a soft diet and careful cleaning around the splint.
A root canal treatment is usually scheduled 7-10 days after replantation for an adult tooth, to remove the dead pulp tissue before it can trigger infection or root resorption. The tooth will be reviewed regularly for the first year, then yearly, to check for signs of root resorption or ankylosis (where the tooth fuses to the bone). If the tooth cannot be saved, options include a denture, a bridge or a dental implant once the jaw has finished growing.
What happens if the tooth can’t be saved?
If replantation is not possible, or if the tooth fails over the following months, the space needs to be managed. For a child, a small removable plate that holds a false tooth is usually the answer. For an adult, the options are a denture, a bridge, or a dental implant. The right choice depends on the health of the neighbouring teeth, the bone at the site, and your long-term plans for that part of the mouth. Our dentists at Dentist Pymble will walk through each option, including the timeframes and the cost picture, so you can make the call without feeling rushed.
How can I prevent dental injuries?
Most dental injuries are preventable. The single biggest intervention for sport-related trauma is a custom-fitted mouthguard. Off-the-shelf “boil and bite” versions offer some protection, but a custom guard made from an impression of your teeth is significantly more comfortable, stays in place better, and reduces the risk of injury to a much greater degree. We make custom mouthguards for both adults and children at our Pymble practice under our preventative dentistry service.
For younger children, simple habits help: childproofing sharp corners on furniture, using car seats correctly, and supervising playground play. For adults, the risks tend to cluster around contact sport, cycling and motor vehicle incidents, so the mouthguard conversation is worth having before the season starts, not after the first dental injury.
What to do right now if a tooth has just been knocked out
- Find the tooth and pick it up by the crown.
- If dirty, rinse briefly with milk (under 10 seconds). Do not scrub.
- Try to place it back in the socket, or store it in milk or saline.
- Call our Pymble practice on (verify on live site) straight away and let us know it is a knocked-out tooth. We hold emergency appointments open daily.
- Get to the practice within 30 minutes if at all possible.
If you are a Pymble, Gordon or wider Ku-ring-gai resident and a tooth has just been knocked out, contact our practice immediately. We see neighbouring Gordon patients for emergencies and will fit you in the same day whenever the schedule allows.
Frequently asked questions
Can a knocked-out tooth be saved after an hour? Sometimes, but the odds drop sharply after 30-60 minutes, particularly if the root has been allowed to dry out. The single biggest factor is keeping the root surface moist (ideally in milk) and getting to a dentist quickly.
What if I can’t find the tooth? If a tooth is genuinely missing after trauma, the dentist will check the mouth and may organise a chest x-ray to rule out inhalation. Treatment then focuses on the socket and any damage to surrounding teeth or bone.
Does replanting a tooth hurt? No. The socket is numbed with local anaesthetic before the tooth is repositioned, and most patients are surprised at how straightforward the appointment is. Some soreness over the next few days is normal and responds to over-the-counter pain relief.
Will the tooth look different afterwards? Possibly. A successfully replanted adult tooth often darkens slightly over the first year as the pulp tissue inside it dies. This can usually be managed with internal bleaching or a veneer if it bothers you cosmetically.
How much does emergency treatment for a knocked-out tooth cost in Pymble? The cost depends on whether the tooth can be replanted, whether a splint is needed, and what follow-up treatment is required. We will always give you a written quote before any treatment starts, and our team can run a health-fund check on the day.