Maybe you’ve been told a tooth has to come out. Maybe you’ve looked at a mouth full of broken, dark, patched teeth and assumed the only answer left is dentures or implants. Either way, removing a tooth is the one dental decision that can’t be undone.
The short answer: often, yes. A tooth can usually be saved when three things are true: enough healthy tooth is left after the decay is removed to seal a restoration to, the root and the bone around it are sound, and any nerve problem can be treated with a root canal.
It usually can’t be saved when the root is cracked, the decay runs below the bone, or the bone support is gone.
What a tooth looks like tells you surprisingly little. Some teeth that look hopeless have strong roots and plenty of sound structure underneath. Some that look fine are cracked to the root. The decision is made below the surface: on X-rays, and once the decay is out.
What decides whether a tooth can be saved
1. How much healthy tooth is left
Decay is removed first. What matters is what remains: enough sound tooth, especially at the edges near the gum, for a new restoration to seal against. If the edges can be sealed, decay has nowhere to get back in. If they can’t, a restoration will fail no matter how well it’s made.
2. The nerve
When decay reaches the nerve, the nerve becomes inflamed or infected. That isn’t a reason to remove the tooth. A root canal cleans out the inside of the tooth and seals it. I do most of my root canals myself and refer the complex ones to an endodontist. A tooth that has had a root canal then needs a restoration that protects it.
3. The root and the bone
A strong root in healthy bone is what makes a tooth worth rebuilding. A root that’s cracked lengthwise can’t be repaired. Severe bone loss from gum disease can leave a tooth too loose to support anything. These are the two most common reasons a tooth truly has to go.
4. The rest of your mouth, and what you want
One tooth is never decided alone. How it fits in your bite, what the teeth around it need, and what you want, including whether you want to avoid surgery, all shape the plan.
Why saving a tooth is worth the effort
An implant is a good replacement. It is still a replacement. Removing a tooth and placing an implant means surgery, healing time and more steps. A natural tooth keeps its own root and the ligament that cushions it in the bone.
Saving a tooth also means choosing how to rebuild it. Where I can, I use an inlay or onlay, which replaces only what’s missing, instead of a crown, which needs the whole tooth shaped down. Keeping more of the tooth is the point.
Teeth that were saved, from least to most damaged
Every tooth below was a candidate for extraction by appearance alone. Each was kept.
A small spot over deep decay
Before
SavedDecay close to the nerve
Before
SavedDecay hiding under an old silver filling
Before
SavedHalf the tooth broken away
Before
SavedDecayed down to the gumline
Before
Saved
Before
SavedSave it, or take it out and place an implant?
Before
Saved
X-rayThis patient had already lost the tooth next to this one, and it had been replaced with an implant. When this tooth needed treatment, extraction and a second implant was an option. The patient didn’t want another surgery and didn’t want to lose another natural tooth.
After the decay was removed, enough healthy tooth was left to seal the edges of a ceramic inlay, and the roots and bone were strong. So I saved it: a root canal, then an e.max inlay.
A whole upper arch, every tooth kept
Before
After
Before
AfterWhen this many teeth are involved, fixing them one at a time as each one fails is the least predictable way to do it. I plan the whole mouth first, often working out the bite on models before I touch a tooth, then rebuild in a sensible order.
Been told a tooth has to come out, or wondering whether your teeth can be saved? Send photos through the free Virtual Smile Consultation and I’ll tell you whether it’s worth coming in.
How I evaluate a tooth before deciding
I don’t decide whether a tooth can be saved from a photo. I examine it, take X-rays that show the whole root and the bone around it, and test the nerve. I look for cracks and check the gum and bone support. If the tooth might be saved, the final answer often comes once the decay is removed and I can see what’s left. When several teeth are failing, I plan the whole mouth before treating any of them, so each repair fits with the next.
Questions to ask before a tooth is removed
Read this as a prompt for a conversation with your dentist, not a diagnosis:
- Is the root cracked, or is the damage in the part of the tooth above the gum?
- How much healthy tooth will be left once the decay is out?
- Does it need a root canal, and is it a straightforward one?
- How is the bone around it?
- What would replacing it involve, compared with saving it?
- Could it be rebuilt with an onlay instead of a crown?
- If several teeth are failing, has anyone planned the whole mouth, or only the next tooth?
If nobody has answered these, a second opinion before an extraction is reasonable.
Don’t wait on these. Swelling in the gum or face, a pimple-like bump on the gum, fever, or tooth pain that wakes you up: call the office the same day, or see our emergency dental care page.
Swelling that spreads toward the eye or down the neck, or any difficulty swallowing or breathing, is a medical emergency. Go to the emergency room.
Honest limits
Not every tooth can be saved. A root cracked lengthwise, decay that runs below the bone, or a tooth with too little bone left are usually beyond saving, and keeping them only delays the inevitable. In those cases extraction is the right call.
Saving every tooth isn’t always the best plan for the mouth as a whole. Occasionally removing one tooth makes the rest of the plan work better.
A saved tooth still needs care. Teeth that have had a root canal need a protective restoration, and any tooth can develop new problems later.
Where a case needs an endodontist or an oral surgeon, I refer. Individual results vary, and not every tooth or case is a candidate for any particular treatment.
Questions patients ask
Is it better to save a tooth or get an implant?
When a tooth can be saved predictably, saving it usually means less surgery and keeps your natural root. When it can’t, an implant is a good replacement. The answer depends on the tooth, which is why it needs an exam and X-rays.
Can a tooth with a huge cavity be saved?
Often. The size of the cavity matters less than what’s left once the decay is removed, and whether the root and bone are healthy.
Can a tooth broken at the gumline be saved?
Sometimes. If enough sound tooth remains at or just below the gum to seal a restoration to, and the root is intact, it can often be rebuilt. If the break runs down the root, it usually can’t.
Find out before anything comes out
I’m Dr. Rajvinder Dulay. I’ve practiced restorative dentistry and full mouth rehabilitation in Tamarac for more than 20 years. Every tooth in this post could have been extracted. An extraction is permanent, so it’s worth finding out first whether it has to be.