Knocked Out Tooth: What to Do in the First 60 Minutes (Step-by-Step)

February 28, 2026

Dr. Thanh Huynh

Quick Answer: A knocked out tooth has the best chance of being saved if it’s reimplanted within 30 to 60 minutes. Here’s the short version: find the tooth, handle it only by the crown (the white part — never the root), rinse it gently with milk or saline for under 10 seconds if it’s dirty, and either put it back in the socket or store it in a cup of cold milk. Then get to a dentist or ER immediately. If it’s after-hours and you can’t reach a dentist, go to an emergency room — they can stabilize the tooth and control bleeding while you wait for dental care. This guide walks through each step.

If you are reading this right now, during the emergency — you are in the right place. Scroll down to the numbered steps and follow them in order. Read the rest later.

The 7 Steps to Save a Knocked Out Tooth

Step 1 — Find the tooth. Look carefully. If the injury happened outside, the tooth may be on the ground, on clothing, or near the impact site. You need the whole tooth. Even if it looks broken, bring all fragments.

Step 2 — Pick it up by the crown only. The crown is the white, chewing part you normally see in the mouth. Do not touch the root (the yellowish pointed end). The root is covered in living cells that must survive for reimplantation to work — touching them with your fingers damages them.

Step 3 — If the tooth is dirty, rinse it gently for less than 10 seconds. Use milk or saline if available. If you have to use water, make it brief. Do not scrub, do not use soap, do not dry the tooth with a cloth, and do not use hot water. Any of these will kill the root cells.

Step 4 — If possible, place the tooth back in its socket. This is the best preservation method by far. Hold the tooth by the crown, line it up correctly (front of the tooth facing forward), and gently press it into place. Have the person bite down on a clean gauze pad or a soft cloth to hold it there.

Step 5 — If you can’t reimplant it, store it in cold milk. A small cup or container of regular (non-skim) milk is the second-best preservation medium. Milk’s pH and composition keep the root cells alive for about an hour. If you have no milk, hold the tooth inside your cheek (in your own saliva), but never put the tooth in a child’s mouth — they may swallow or choke on it. Do not use tap water for extended storage — water causes the root cells to burst.

Step 6 — Control any bleeding from the socket. Apply firm, steady pressure to the empty socket with clean damp gauze or a folded paper towel for 10–15 minutes. If bleeding is heavy and won’t stop, or the person hit their head, go to an emergency room.

Step 7 — Get professional care immediately — within 60 minutes if at all possible. Call the dental office on your way. If it’s after-hours or the weekend, call the emergency line, or go directly to the nearest ER. Do not wait until morning.

That’s the emergency protocol. The sections below explain why each step matters, when to go to an ER instead of a dentist, and what to expect at the appointment.

Why the First Hour Matters for a Knocked Out Tooth

A tooth is anchored to the jawbone by a thin layer of living tissue called the periodontal ligament. The cells in this ligament are what reattach to the bone after reimplantation. The moment a tooth is avulsed (the clinical term for a fully knocked out tooth), those cells start to dry out — and dying cells can’t reattach.

Research consistently shows:

Under 30 minutes: Best chance of long-term success. Many teeth reimplanted this quickly stay in place for decades.
30–60 minutes: Good prognosis if the tooth has been properly stored (in the socket, in milk, or in saliva).
60 minutes to 2 hours: Success rate drops, but reimplantation is still worth attempting.
Over 2 hours of dry storage: The root ligament cells are typically non-viable, though a tooth stored in milk or saline the entire time can sometimes still be saved.

This is why speed matters more than almost anything else in a knocked out tooth emergency. Don’t spend 20 minutes finding a perfect container. Don’t drive to a specialty store for saline. Grab cold milk from your fridge or use your own saliva and move.

Baby Tooth vs. Adult Tooth: What’s Different

This is a critical distinction parents sometimes miss.

If a child has knocked out a baby (primary) tooth: do NOT try to reimplant it. Pushing a baby tooth back into the socket can damage the permanent tooth bud developing underneath. Save the tooth in milk to bring to the dentist, control the bleeding, and come in for an exam — but don’t force it back in place.

If an adult (permanent) tooth is knocked out: This is a true emergency. Follow the 7 steps above and get to a dentist within the hour.

How can you tell if it’s a baby tooth or permanent? Children lose baby teeth roughly between ages 6 and 12, with the front teeth lost first. A knocked out tooth from a child under 6 is almost always a baby tooth. A knocked out tooth from a child over 7 in the front of the mouth could be either — but if you’re unsure, save it in milk and let the dentist determine. Never force it back in.

When to Go to the ER Instead of (or Before) the Dentist

A knocked out tooth isn’t always just a tooth problem. Go to the emergency room first — or in addition — if any of these are happening:

Loss of consciousness, even briefly, at the time of injury
Severe headache, vomiting, or confusion after a blow to the face
Bleeding that won’t slow down after 20 minutes of firm pressure
Suspected jaw fracture — unable to open/close the mouth normally, numbness in the lip or chin, visible deformity
Severe facial swelling within minutes of injury
Injury caused by a significant impact — car crash, high-speed fall, assault — where other injuries are possible

The ER may not be able to reimplant the tooth themselves, but they can control bleeding, take X-rays to rule out jaw or skull fracture, and stabilize things until a dentist can take over. Bring the tooth in milk with you — a dentist on-call or at a follow-up visit can still attempt reimplantation if the tooth was properly stored.

What Aster Smiles Will Do When You Arrive

When you come in with a knocked out tooth, the team shifts immediately into emergency mode.

Pain and bleeding control come first. Local anesthesia, pressure, and if needed, nitrous oxide for anxiety.
Rapid assessment. We examine the socket, the tooth itself, and the surrounding bone and soft tissue for fractures or debris.
Reimplantation if viable. If the tooth and socket are both in good shape, we gently clean the socket and place the tooth back in position.
Splinting. A thin wire or dental resin bonds the reimplanted tooth to the adjacent healthy teeth. This stabilizes the tooth so the periodontal ligament can reattach. Splints typically stay in place for 2–4 weeks.
Follow-up plan. Most reimplanted teeth eventually need a root canal because the blood supply was severed during the injury. This is usually done at a follow-up visit a few weeks later, once the tooth is stable.
If reimplantation isn’t possible. Sometimes the tooth is too damaged, or too much time has passed. In those cases, we discuss options: a dental implant (the closest thing to a natural replacement), a bridge, or a removable option. None of these need to be decided on the day of the injury.

Dr. Huynh has advanced training in oral surgery and emergency dental treatment, so most knocked out tooth cases can be handled in-house without a referral to a specialist — saving you time during the critical window.

Medically reviewed by Dr. Thanh Huynh, DMD, FAGD — Fellow of the Academy of General Dentistry, a credential held by fewer than 7% of general dentists. Last reviewed April 23, 2026.

How to Prevent a Knocked Out Tooth in the First Place

Many avulsion injuries are preventable. The single most effective preventive measure is a custom-fitted mouthguard for anyone playing contact sports — football, basketball, hockey, soccer, wrestling, martial arts, skateboarding. Boil-and-bite mouthguards from a sporting goods store offer some protection but are inferior to a custom-fitted one made at a dental office.

Other prevention notes:

Helmets alone don’t protect teeth — a mouthguard is separate and necessary
For kids who grind or clench, a nightguard can help, but doesn’t protect against impacts during sports
Check playground equipment and bike/scooter setups for protective gear fit

Custom mouthguards typically cost $150–$300 and last several seasons. Compare that to the cost of replacing a knocked out tooth with an implant ($4,000+), and the math is easy.

Frequently Asked Questions About a Knocked Out Tooth

Can the tooth still be saved if it’s been out for more than two hours?

Maybe. If the tooth was stored in milk or saline the entire time, reimplantation can still be attempted with variable success. If the tooth has been dry for over 60 minutes, the success rate drops significantly — but it’s still worth bringing it to the dentist. The alternative is extraction and replacement, which is more expensive and takes months. Always bring the tooth in. Let the dentist make the final call.

What’s the best thing to store a knocked out tooth in if I don’t have milk?

In order of preservation quality: (1) back in the socket if you can place it there safely, (2) Hank’s Balanced Salt Solution (sold as “Save-A-Tooth” kits), (3) cold whole milk, (4) saline, (5) saliva (either in a container or inside the cheek of an adult — never a child). Tap water is last resort and only for very short storage (under 15 minutes) because it damages the root cells.

Should I take a pain reliever before getting to the dentist?

Yes, unless there’s a medical reason not to. Ibuprofen (Advil, Motrin) works better than acetaminophen (Tylenol) for dental trauma because it reduces inflammation. Follow the label dosage. Do not take aspirin if you’re still bleeding — it’s a blood thinner and will make bleeding worse.

The socket won’t stop bleeding. What do I do?

Apply firm, constant pressure with clean damp gauze or a folded cloth for 10–15 minutes. Sit upright rather than lying down — lying down increases blood pressure in the head. A moistened tea bag (regular black tea) can help because tannic acid aids clotting. If bleeding is still heavy after 20 minutes, or blood is pooling rapidly, go to the ER.

What if the tooth broke into pieces instead of coming out whole?

Save every fragment you can find. Even if we can’t reimplant a shattered tooth, the pieces can be used to reconstruct the visible portion of the tooth or as a reference for matching color and shape in a crown. Put the fragments in milk just like a whole knocked out tooth.

Is this covered by insurance?

Most dental insurance plans cover emergency exams and some portion of trauma treatment. Major work (root canal, crown, implant) is typically covered at 50% up to your annual maximum. Our team will help you understand your coverage during the visit — emergency care takes priority over paperwork. Don’t delay coming in because you’re unsure about coverage; we’ll work it out.

What if this happens after-hours?

Call our office number (832) 476-7676 — the voicemail may have an emergency line or instruct you to call a backup number. If you can’t reach a dentist, go to the nearest ER. They can control bleeding, take X-rays to rule out jaw fracture, and in some cases an on-call dentist can be paged. Bring the tooth in milk with you.

How long does the splint stay on after reimplantation?

Typically 2–4 weeks for a straightforward avulsion. If the bone around the socket was also fractured, the splint may stay longer (4–8 weeks). During this time, eat soft foods, don’t bite directly on the injured tooth, and keep the area very clean — gentle brushing and saltwater rinses. Follow-up visits every 1–2 weeks to check healing.

If You’re Reading This After the Fact

If the injury has already happened and you’re reading this to understand what comes next, the most important thing is to be in touch with a dentist now. Even if it’s been hours. Even if the tooth wasn’t found. Even if it’s a baby tooth.

Book an emergency visit or call (832) 476-7676. Tell us what happened and when — we’ll triage from there. If it’s after-hours and this is active, go to the ER and call us first thing the next morning.

This article provides general information and is not personalized medical advice. A knocked out tooth is a true dental emergency — seek immediate professional care. If the injury involves significant head trauma, loss of consciousness, suspected fracture, or uncontrolled bleeding, go to an emergency room before dealing with the tooth.

Related reading: Learn more about our emergency dental care in Cypress and our dental implant options for patients whose knocked out tooth can’t be saved.

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