If your tooth gets knocked out, pick it up by the crown, gently put it back in the socket or keep it in milk, and see a dentist within 30 minutes. Those first minutes decide whether the tooth can be saved, because the root is covered in living cells that start to die once they dry out.
Very few people know this before it happens to them. In a national survey this spring, only 27% of American adults knew a knocked-out tooth has a 30-minute window.
Here, I’ll walk you through each first-aid step, the safest ways to store the tooth, the mistakes to avoid, when the ER should come first, and what happens once you reach the dental office.
Key Takeaways
- Hold the tooth by the white top part and never touch the root.
- Get to a dentist within 30 minutes for the best chance of saving it.
- Keep the tooth moist in milk or saliva, not tap water.
- Go to the ER first if the accident also caused a head injury.
- Never put a knocked-out baby tooth back in.
What Should You Do Right After a Tooth Gets Knocked Out?
Right after a tooth gets knocked out, find it, hold it by the crown, rinse it only if it’s dirty, try to put it back, and get to a dentist fast. More than five million teeth are knocked out every year, and the teeth that do best are the ones treated quickly.
Speed matters because the root is covered in a thin layer of living cells. Those cells help the tooth reattach to the bone, and once they dry out, they start to die. Follow these five steps in order.
1. Pick it up by the crown
The crown is the white part you see when you smile, and the root is the part that sat under your gums. Hold the tooth by the crown only, so you don’t crush or rub off the cells on the root.
2. Rinse it only if it’s dirty
If the tooth landed on the ground, rinse it for a few seconds in milk, saline, or plain water. Don’t use soap, don’t scrub it, and don’t dry it off. A clean tooth needs no rinse at all.
3. Try to put it back in the socket
Check that the tooth is facing the right way, then press it gently into the socket. Bite down softly on clean gauze or a cloth to hold it in place. If it won’t slide in easily, don’t force it.
4. Keep it moist if it won’t go back in
A tooth that can’t go back in still has a good chance if the root stays moist. Milk is the easiest option for most people, and the table below compares the rest.
5. Call a dentist right away
Call as soon as the tooth is safe, and bring it with you, even if you can’t find it. When patients call my West Houston office with a knocked-out tooth, my team walks them through these steps over the phone and has a room ready when they arrive.
How Should You Store a Knocked-Out Tooth?
You should store a knocked-out tooth back in its socket whenever possible. If it won’t go back in, keep it moist in milk, saliva, or a tooth preservation kit until you reach the dentist.
Here’s how the common options compare.
| Storage option | Safe? | Why |
| Back in the socket | Yes, best choice | The tooth stays in its natural home |
| Cold milk | Yes | Milk keeps root cells alive longer than water |
| Inside your cheek | Yes, for adults | Saliva keeps the tooth moist, but don’t swallow it |
| Tooth preservation kit | Yes | Made for this exact situation |
| Tap water | No | Root cells can’t handle water for long |
| Tissue, napkin, or dry | No | The root dries out and the cells die |
Tap water feels like the obvious choice, but root surface cells can’t tolerate it for long. Milk is the better pick, and it’s easy to find at home, at work, or at a gas station on the way to the dentist.
What Mistakes Can Hurt Your Chances of Saving the Tooth?
The mistakes that hurt your chances most are touching the root, cleaning the tooth too hard, letting it dry, and waiting too long. Each one damages the cells the tooth needs to reattach.
- Touching the root: Fingers can crush or rub off the living cells on the root surface.
- Scrubbing the tooth: Soap, brushes, and wiping strip away the root’s living layer.
- Letting it dry: Even a short time in open air can harm the root.
- Wrapping it in a tissue: Paper pulls moisture away from the tooth.
- Waiting to see how it feels: Every minute counts, even when the pain is mild.
Avoiding these keeps the tooth in the best shape possible. The one situation that should change your plans is a serious hit to the head.
When Should You Go to the ER Before the Dentist?
You should go to the ER before the dentist if the same accident caused a hard hit to the head or face. A tooth can wait a short time in milk, but a head injury can’t.
Go to the ER first if you notice any of these signs of a serious head injury or a broken jaw.
- Confusion or unusual behavior: Trouble recognizing people or places can point to a brain injury.
- Repeated vomiting or a worsening headache: Get checked for head trauma before anything else.
- Drowsiness or passing out: Growing sleepiness after a blow to the head needs emergency care.
- Bleeding that won’t stop: Heavy bleeding that doesn’t slow with firm pressure needs urgent care.
- Jaw pain or a bite that feels off: This can mean a broken jaw.
If none of these apply, head straight to a dentist. Going to the ER for tooth pain often ends with a referral back to a dentist, and a knocked-out tooth can’t afford the delay.
How Does a Dentist Save a Knocked-Out Tooth?
A dentist saves a knocked-out tooth by cleaning the socket, setting the tooth back in place, and holding it steady with a splint while it heals. Here’s how that visit usually goes in my office.
First, I take an X-ray to check the root and the bone around it. Then I gently clean the socket and set the tooth back in place. A splint, which is a thin, flexible wire bonded to the neighboring teeth, keeps it steady for about two weeks while the root reattaches.
Adult teeth almost always need a root canal afterward, usually started within two weeks, because the nerve inside rarely survives the injury. I perform root canal therapy in-house, so you won’t need to see someone new. You’ll also come back for checkups over the next several months so I can make sure the root is healing well.
What Are Your Options If the Tooth Can’t Be Saved?
If the tooth can’t be saved, you can replace it with a dental implant, a dental bridge, or a partial denture. Sometimes a tooth is too damaged, or was out of the mouth too long, to keep, and the decision comes down to how much healthy root and bone are left.
When replacement is the better path, these are the most common choices.
- Dental implant: A titanium post replaces the root and holds a natural-looking crown.
- Dental bridge: A false tooth is held in place by crowns on the teeth next to the gap.
- Partial denture: A removable piece fills the space and comes out for cleaning.
Each option differs in cost, timing, and upkeep, so comparing implants, bridges, and dentures side by side makes the choice easier. Filling the gap soon also keeps nearby teeth from drifting out of place.
Should You Put a Knocked-Out Baby Tooth Back In?
You should never put a knocked-out baby tooth back in, because doing so can damage the adult tooth growing underneath.
Keep the child calm, press clean gauze on the spot to stop the bleeding, and call a pediatric dentist. Roman Dental treats adults only, so a pediatric dentist is the right call for children.
What Gives a Knocked-Out Tooth the Best Chance?
A knocked-out tooth has its best chance when you act within half an hour and keep the root moist the whole way to the dentist. Handle it gently, try to put it back, and skip the urge to wait and see how it feels.
If the tooth can be saved, a splint and a root canal usually get it back to normal. If it can’t, an implant, bridge, or partial denture can restore your smile.
Get Same-Day Emergency Care at Roman Dental
If you knock out a tooth, put it in milk, call (281) 920-4200, and head to Roman Dental on Memorial Drive in West Houston’s Energy Corridor. I’ve provided emergency dental care here since 1999, and I see emergency patients the same day whenever possible, including weekends when needed. You can also book online anytime.
Frequently Asked Questions
How long can a knocked-out tooth survive outside the mouth?
A knocked-out tooth survives best outside the mouth for about 30 minutes, since most root cells die after that much time dry. Kept moist in milk or saliva, it lasts longer, and a tooth that has been out for more than an hour can often still be put back in, though the long-term outlook is lower.
Can you put a knocked-out tooth back in yourself?
Yes, you can put a knocked-out adult tooth back in yourself, and doing it right away gives the tooth its best chance. If it doesn’t slide in with gentle pressure, keep it in milk and let the dentist place it.
What should you eat after a knocked-out tooth is put back in?
After a knocked-out tooth is put back in, stick to soft foods for up to two weeks while the splint is on. Brush gently with a soft toothbrush after meals to keep the area clean while it heals.
What should you do if you can’t find the knocked-out tooth?
If you can’t find the knocked-out tooth, still see a dentist right away. The dentist will check the socket, look for damage to nearby teeth, and take an X-ray to make sure the tooth wasn’t pushed up into the gum. A cough that won’t stop or trouble breathing after the injury needs the ER, since the tooth may have been inhaled.
Can a knocked-out tooth be treated on a weekend in West Houston?
Yes, Roman Dental in West Houston sees emergency patients outside regular hours, including weekends, when needed. Regular hours are Monday through Thursday from 8 a.m. to 5 p.m. and Friday from 8 a.m. to 2 p.m., and online booking is available 24/7.
Does dental insurance cover a knocked-out tooth?
Dental insurance coverage for a knocked-out tooth depends on your plan and the treatment needed, such as a splint, a root canal, or a replacement tooth. Roman Dental accepts most major dental insurance plans, files claims for patients, and offers Afterpay, CareCredit, Cherry, and Affirm for patients paying out of pocket.
