In brief
When decay or damage reaches the pulp of a tooth, the two main options are root canal treatment, which removes the infected tissue and keeps the tooth, or extraction, which removes the tooth. Dentists generally try to keep natural teeth when it is practical, because a saved tooth maintains your bite and avoids the need for a replacement. But saving a tooth is not always possible or sensible. The right choice depends on how much sound structure remains, gum and bone support, your health and the full cost of each path.
Key takeaways
- A root canal removes infected pulp and keeps the natural tooth.
- Extraction removes the tooth, usually creating a gap to be managed.
- Keeping a natural tooth preserves bite function and bone stimulation.
- Some teeth are too damaged to restore and extraction may be advised.
- Compare complete paths, including any crown or tooth replacement, not just the first fee.
When a tooth is badly decayed, cracked or infected, the two main options are usually a root canal, which removes the infected tissue inside and keeps the tooth, or an extraction, which removes the tooth completely. Dentists generally try to save natural teeth when that is practical, but it is not always possible or the best choice. The decision depends on how much healthy tooth is left, the support around it, your health and the full cost of each path.
Being told you need one or the other can feel like a lot to take in, especially if you are in pain. This guide explains what each treatment involves, how dentists weigh the decision, and what to think about before you choose.
What is the difference between a root canal and an extraction?
Both treatments deal with the same underlying problem: a tooth whose pulp, the living tissue at its centre, is infected or badly damaged. They solve it in opposite ways.
| Root canal treatment | Tooth extraction | |
|---|---|---|
| What happens to the tooth | It stays in place | It is removed |
| Main goal | Remove infected pulp, disinfect and seal the canals | Remove the source of the problem entirely |
| Usual next step | A filling or crown to protect the tooth | Healing, then a decision about replacing the tooth |
| Effect on bite | Bite is maintained | A gap forms unless the tooth is replaced |
| Effect on bone | Bone around the root is kept | Bone at the site gradually shrinks |
| Typical visits | One or more, plus the restoration | Usually one, plus replacement visits if chosen |
What does root canal treatment involve?
Root canal treatment removes the inflamed or infected pulp, cleans and disinfects the canal system inside the roots, and seals it. The tooth stays where it is.
The usual steps
- Numbing. The area is numbed with local anaesthetic.
- Access. A small opening is made in the top of the tooth.
- Cleaning. The pulp is removed and the canals are cleaned and shaped.
- Sealing. The canals are filled and sealed to help prevent reinfection.
- Restoration. The tooth is closed with a filling, and back teeth are often later covered with a crown.
With modern techniques and anaesthetic, most patients find the procedure comparable to a large filling, only longer. If this is a worry, is root canal treatment painful? explains what patients typically feel during and after.
Why the restoration matters
A root canal treats the inside of the tooth. The outside still needs protection. Molars and premolars that have had root canal treatment have usually lost structure to decay and old fillings, and they take heavy chewing forces. A crown helps hold them together. The reasons are covered in why a crown is often recommended after root canal treatment.
Treated teeth can last many years. How long depends on the quality of the restoration, how much sound tooth remains, and ongoing care.
What does a tooth extraction involve?
A tooth extraction removes the entire tooth. For a tooth that is broken down below the gum, split, or loose from advanced gum disease, extraction can be the more predictable choice.
The usual steps
- Numbing. The area is numbed with local anaesthetic.
- Loosening and removal. The tooth is gently loosened from its socket and removed. Some teeth need to be sectioned into pieces.
- Aftercare. Gauze is placed to control bleeding and you receive home care instructions.
The socket usually heals over days to weeks, and the bone reshapes over the following months. During the first days, avoiding smoking, drinking through a straw and vigorous rinsing helps protect the blood clot that forms in the socket.
The important part is what comes next
Removing a tooth solves the immediate problem, but it creates a gap. Left alone, a gap can allow neighbouring teeth to tilt, the opposing tooth to drift toward the space, and the bone to shrink. Replacement options include an implant, a bridge or a partial denture, each with its own timeline and cost. These are compared in options for replacing one missing tooth.
Some teeth, such as certain wisdom teeth, may not need replacing at all.
Is it better to save a tooth or pull it?
When a tooth can be restored reliably, keeping it is usually the preferred option. A natural tooth:
- keeps your bite stable and your neighbouring teeth in place,
- keeps the bone around its root,
- feels and works like the rest of your teeth, and
- avoids the need for a replacement.
But “save the tooth at all costs” is not good advice either. Heroic efforts on a tooth with a poor outlook can mean spending time and money on treatment that fails, sometimes with more bone loss by the time it is removed. A good recommendation is honest about the tooth’s long-term prospects.
How do dentists weigh the decision?
Several factors guide the recommendation.
Restorability
Is there enough sound tooth above and below the gumline to support a lasting filling or crown? A tooth with decay extending deep under the gum, or a crack running down the root, often cannot be restored predictably.
Bone and gum support
Advanced gum disease can leave a tooth loose, with little bone holding it. Saving the pulp does not fix a tooth that has lost its support.
The type of crack or fracture
A crack limited to the crown of the tooth can often be treated with a root canal and crown. A vertical root fracture, which splits the root, usually cannot. X-rays and a careful exam help tell them apart, though some cracks only become clear during treatment.
Strategic value
A tooth that anchors your bite, supports a partial denture, or sits in a highly visible spot may justify more effort than a tooth with little functional role, such as some wisdom teeth.
Your health
Certain medical conditions and medications influence the risks of each path, including healing after an extraction. Your dentist will review your health history before recommending either.
Cost over time
A root canal plus crown has a real cost. So does an extraction plus a replacement. Comparing only the extraction fee understates the true difference.
Your preferences
Some patients strongly prefer to keep their natural teeth. Others would rather remove a tooth with a guarded outlook and move straight to a replacement. Both are reasonable when you understand the trade-offs.
Which teeth usually cannot be saved?
These situations often point toward extraction:
- a vertical crack or split running down the root,
- decay that has destroyed the tooth well below the gumline,
- severe bone loss around the tooth from gum disease,
- a tooth with repeated failed treatment where further treatment has a poor outlook, and
- some wisdom teeth that are hard to reach, hard to clean, or have no opposing tooth.
Even in these cases, your dentist should explain why, and what the options are for the space afterward.
What if the tooth has already had a root canal?
Sometimes a tooth that was treated years ago becomes painful or shows infection on an X-ray again. This can happen if bacteria leak back in through a failing filling or crown, if a canal was hard to reach, or if the tooth has cracked.
In that situation, the choice widens slightly:
- Root canal re-treatment. The old filling material is removed, the canals are cleaned again and resealed, and the tooth is restored. This may be possible when the tooth is still solid and the problem is inside the canals.
- Extraction. If the tooth is cracked, heavily broken down or has lost bone support, removing it may be the more predictable choice.
- Referral. Some re-treatments are complex, and your dentist may discuss referral to another dental provider for that part of care.
The same questions apply as with a first root canal: how much sound tooth remains, whether the tooth can be restored well afterward, and what the complete path would cost. If you are covered by the CDCP, note that root canal re-treatment requires preauthorization.
Are the options different for children’s baby teeth?
Yes. A baby tooth that is badly decayed or infected may be treated differently from an adult tooth, because it will eventually fall out on its own. Depending on how close the tooth is to being lost naturally, your dentist may suggest treating the pulp to keep the tooth for now, or removing it.
Keeping a baby tooth until its natural time can matter, because it holds space for the adult tooth underneath. If a baby tooth is removed early, your dentist can tell you whether that space needs to be watched. Our guide on how to help prevent cavities in children covers ways to avoid getting to this point.
How do the costs compare?
Fees depend on the specific tooth and plan, but the comparison usually looks like this:
- Saving the tooth: root canal treatment, plus a filling or crown. Molars have more canals than front teeth and usually need a crown, so they involve more treatment.
- Removing the tooth: the extraction, then, if you replace it, an implant, bridge or partial denture. Implants in particular involve several stages. What affects the cost of a dental implant breaks these down.
The extraction on its own is almost always the lowest first fee. The complete path is what matters.
Coverage
- Private insurance often covers root canals, extractions and crowns at different levels, and may cover replacements differently again. A predetermination can confirm your share before treatment.
- The Canadian Dental Care Plan lists root canal treatment and removal of teeth among covered services. Crowns require preauthorization, and so do partial dentures. Dental implants are not listed among covered services. Coverage can change, so check the current details or ask our team.
What does recovery look like after each?
After a root canal, the tooth may feel tender for a few days, especially when biting. Over-the-counter pain relief used as directed usually helps. Chew on the other side until the final restoration is in place, because the tooth is more fragile until then.
After an extraction, some soreness and swelling for a few days is normal. Follow the home care instructions closely, eat soft foods, and avoid disturbing the socket. Contact the office if pain worsens after a few days, which can be a sign of a dry socket, or if bleeding does not settle.
What if you are not ready to decide?
If there is no urgent infection, it is reasonable to ask for time to think, get a predetermination from your insurer, or ask more questions. Useful questions include:
- What is the long-term outlook for this tooth if I save it?
- Would it need a crown, and why?
- If I remove it, would you recommend replacing it, and with what?
- What happens if I wait?
Be aware that waiting has limits. A tooth that is savable today can become unsavable as decay or a crack progresses, and an infection can flare. If the tooth is painful or swollen, it needs attention soon. Temporary relief from antibiotics, when they are prescribed, does not remove the source of the problem.
When is it urgent?
Contact a dental office promptly for severe or worsening pain, swelling of the gum or face, a bad taste with a bump on the gum, or fever with tooth pain. The warning signs that often lead to either treatment are listed in signs you may need root canal treatment, and our emergency dentistry page explains how urgent concerns are handled.
Call 911 or seek emergency medical care for trouble breathing, trouble swallowing, uncontrolled bleeding, major facial trauma or other potentially life-threatening symptoms.
Deciding on a damaged tooth in Cornwall
A clear recommendation starts with a proper look at the tooth. At York Street Dental Centre, 118 York Street in Cornwall, we examine the tooth, take X-rays, and explain whether it can be saved, what each path would involve, and the estimated fees, before treatment begins. If saving the tooth is not realistic, we explain the options for the space afterward.
Patients visit us from across the city, including downtown, Riverdale and Churchill Heights, as well as St. Andrews West and Cornwall Island (Akwesasne). We are accepting new patients, no referral is needed, and we offer direct billing for many insurance plans.
Call (613) 932-1620 or request an appointment to have the tooth assessed. You can also read more about root canal treatment at York Street Dental Centre.
Frequently asked questions
Is extraction cheaper than a root canal?
The extraction procedure alone usually costs less than a root canal plus crown. But once you add a replacement — implant, bridge or denture — total costs often equal or exceed saving the tooth. Comparing complete treatment paths gives a truer picture.
Is a root canal just delaying an inevitable extraction?
No. Root canal treatment has good long-term success in appropriately selected and well-restored teeth. Some treated teeth do eventually fail, but many function for decades. Case selection and the final restoration matter greatly.
Can I just have the tooth out and leave the gap?
Sometimes, depending on the tooth. Leaving a gap can lead to drifting teeth, bite changes and bone shrinkage over time. A dentist can tell you whether a particular gap is likely to cause problems.
What if I am in pain right now?
Contact a dental clinic promptly. Severe pain, swelling or fever should not wait for a routine appointment; these can indicate infection that needs timely management.
Which is more painful, a root canal or an extraction?
Both are done with local anaesthetic, so most patients feel pressure rather than pain during treatment. Afterward, a root canal usually causes a few days of tenderness when biting, while an extraction site is often sore for several days as the socket heals. The pain many people blame on a root canal is usually the infection that came before it.
Can a tooth be saved if it has an abscess?
Often, yes. An abscess at the root tip is one of the common reasons for root canal treatment, which removes the source of infection inside the tooth. Whether the tooth can be saved depends on how much sound structure remains and the health of the surrounding bone and gum, which your dentist checks with an exam and X-rays.
Sources
- Canadian Dental Association — Root Canal Treatment
- Cleveland Clinic — Tooth Extraction
- American Association of Endodontists — Root Canal Explained
- Government of Canada — Canadian Dental Care Plan covered services
About the author
This article was written by the York Street Dental Centre Team and reviewed for clinical accuracy by the York Street Dental Centre dental team. York Street Dental Centre is a family dental office at 118 York Street, Cornwall, Ontario K6J 3Y8, providing general, preventive, restorative, and cosmetic dental care for patients of all ages.
Our articles explain common dental questions in plain language, cite reputable health and government sources where relevant, and are updated when guidance changes. Read our editorial policy or learn more about our practice.
This content is intended for general educational purposes and does not replace an examination, diagnosis or personalized treatment recommendation from a dental professional.