Whether your tooth was just knocked out, is badly decayed, or feels loose in its socket, there are proven ways to save it. The approach depends entirely on what’s threatening the tooth, and in some cases, you have minutes to act. A knocked-out tooth that’s replanted within five minutes has the highest chance of survival, while a decayed tooth treated with a root canal and crown can last 20 years. Here’s what to do in each situation.
Saving a Knocked-Out Tooth
A tooth that gets completely knocked out of its socket (dentists call this an avulsed tooth) is a true dental emergency where every minute counts. If the tooth is back in its socket or stored properly within five minutes, it will likely survive. Between five and 60 minutes, the survival rate stays good as long as you store it correctly. After 60 minutes out of the mouth and dry, the chances drop significantly.
Pick the tooth up by the white chewing surface only. Never touch the root. The root is covered in delicate cells that your body needs to reattach the tooth to bone, and handling it destroys them. Rinse it gently with water or milk to remove dirt, but don’t scrub it, dry it, or use soap.
If you can, gently push the tooth back into its socket, root first, and bite down on a napkin or piece of gauze to hold it in place. Then get to a dentist or emergency room immediately. You have the best shot at successful reimplantation if you reach emergency care within 30 minutes.
What to Do If You Can’t Replant It
Sometimes the socket is too damaged or the pain is too intense to push the tooth back in. In that case, you need to keep the root cells alive during transport. Milk is the most practical option: it has the right balance of sugars and proteins to keep those root cells viable for up to an hour or more. Saline (contact lens solution works) is another solid choice. If you have nothing else, tuck the tooth between your cheek and gum so saliva keeps it moist. Avoid plain tap water, which actually damages root cells faster than most alternatives.
This advice applies only to permanent teeth. Baby teeth are generally not reimplanted because forcing one back in can damage the developing adult tooth underneath.
Saving a Tooth From Decay or Infection
When decay reaches the inner nerve tissue of a tooth, you’ll typically feel it. A short, sharp sting from cold drinks or sweets that fades quickly usually means the nerve is irritated but still recoverable. A filling or crown at this stage can often resolve the problem entirely.
Pain that lingers 30 seconds or more after exposure to heat, cold, or sweets signals deeper trouble. At this point, the nerve tissue is dying or already dead, and a root canal is the primary way to save the tooth. During a root canal, the infected tissue inside is removed, the interior is cleaned and sealed, and a crown is placed over the top.
How long a root canal tooth lasts depends heavily on what happens after the procedure. A tooth that gets both a filling and a crown afterward lasts about 20 years on average. With only a filling or only a crown, that drops to around 11 years. A root canal with no follow-up restoration at all lasts roughly 6.5 years. The crown is what protects the remaining tooth structure from cracking under the force of chewing, so skipping it cuts the tooth’s lifespan dramatically.
When a Tooth Can’t Be Saved
Not every damaged tooth is salvageable. A crack that extends down into the root typically means extraction. A small chip or a crack confined to the visible crown can usually be repaired with a dental crown or bonding. But if the tooth splits vertically through the root, or if decay has destroyed so much structure that there’s nothing solid left to anchor a crown to, extraction and replacement with an implant or bridge becomes the better option.
Color changes can also signal trouble. A tooth turning gray, dark yellow, or brown often means the nerve tissue inside has died. This doesn’t always mean the tooth is lost, but it does mean you need treatment soon before infection spreads to the bone.
Saving a Loose Tooth
Teeth loosen when the bone and tissue supporting them break down, usually from gum disease. The first step is treating the underlying infection through deep cleaning that removes bacteria from beneath the gumline. If the tooth is still mobile after treatment, splinting can stabilize it. This involves bonding the loose tooth to its neighbors using composite resin, fiber-reinforced materials, or thin wires, essentially creating a team of teeth that share the biting force.
Splinting works best when the loose tooth has at least half to two-thirds of its normal root attachment still intact, and when there are at least two firm, stable teeth on either side to anchor it to. A tooth that has lost the vast majority of its bone support, or one surrounded by other loose teeth, is a poor candidate for splinting. Splints can be temporary (under six months while healing occurs) or permanent, depending on how much bone support remains.
Cost: Saving vs. Replacing
Saving a tooth is almost always cheaper than replacing one. A root canal with insurance runs roughly $250 to $1,600 depending on which tooth and where you live. Add a crown and you’re still typically under $3,000 total. A dental implant to replace an extracted tooth, including the surgical placement, the connector piece, and the final crown, runs $4,000 to $10,500 or more. Beyond the financial math, your natural tooth also integrates with the surrounding bone in ways that implants approximate but don’t perfectly replicate.
Warning Signs That Need Quick Action
Certain symptoms mean a tooth is in active decline and needs attention before it crosses from salvageable to unsavable. Persistent throbbing pain, especially pain that wakes you up at night, often indicates the nerve is dying. Sensitivity to heat that lingers long after the hot food or drink is gone is a stronger warning sign than cold sensitivity. Swelling in the gum near the base of a tooth, or a small pimple-like bump on the gum, usually signals an abscess forming at the root tip.
A tooth that feels “high” when you bite down, meaning it seems to hit before the others, can indicate inflammation at the root. And any tooth that suddenly becomes mobile without obvious trauma deserves prompt evaluation, since bone loss from infection can progress quickly once it starts. In all of these cases, early treatment is what separates a tooth that lasts decades from one that ends up extracted.