Many people assume an implant is the more modern, longer-lasting fix and a root canal is the old-fashioned patch. The research does not really support that. Root canal treated teeth and single implants both show high long-term survival in published studies, so the choice for most people turns on something simpler: whether this particular tooth can be saved in a way that will last.
Two different jobs
Root canal treatment keeps your tooth. The infected or damaged pulp inside it is removed, the canals are cleaned, shaped and sealed, and the tooth is usually then protected with a crown, especially if it is a back tooth. The root, the ligament around it and the gum all stay as they were. Our guide to root canal treatment explains the steps.
An implant replaces the tooth. The tooth is taken out, a titanium implant is placed in the jaw, and once bone has grown against it over several months a crown is fitted on top. Our article on how dental implants work covers that sequence.
How much tooth is left usually decides it
The most useful question is how much sound tooth remains, above and below the gum. A tooth with enough healthy structure to hold a crown, healthy gum and bone around it, and canals that can be cleaned is often a good candidate for root canal treatment.
Some teeth cannot be made reliable however well the root canal is done. A crack that runs down the root, a split tooth, decay that reaches far below the gum, or a tooth with very little bone left around it from gum disease may be better removed and replaced. That is why two people with the same toothache can be given different advice.
What the survival figures show
Both options can last a long time. A 2023 study in Clinical Oral Investigations (López-Valverde and colleagues) followed 598 root canal treated teeth for up to 37 years and found about 97% were still in place at 10 years and 81% at 20 years. For implants, a 2019 review of long-term studies in the Journal of Dentistry (Howe and colleagues) estimated 10-year survival at about 96%, or about 93% once patients lost to follow-up were taken into account.
Direct comparisons are harder to come by. A 2007 systematic review in the Journal of Prosthetic Dentistry (Torabinejad and colleagues) found that long-term survival of restored root canal treated teeth and single implant crowns was similar, while noting that the studies defined success differently and very few compared the two head to head. The fair conclusion is that longevity alone rarely decides between them.
Side by side
| Root canal and crown | Implant and crown | |
|---|---|---|
| Your own tooth | Kept | Removed and replaced |
| Usually suits | A tooth with enough sound structure and support | A tooth that cannot be saved predictably |
| Time to finish | Usually a few visits over weeks | Usually several months, including bone healing |
| Surgery | None | Extraction and implant placement |
| Typical market range | Root canal about $1,000 (front) to $3,000 (molar), plus a crown at $1,500 to $2,500 | About $4,000 to $7,000 for the implant and crown |
These are general market ranges, not Lumi fees, and the real cost depends on the tooth and anything else it needs, such as a bone graft. Our root canal cost guide and dental implant cost guide break the fees down further.
Why keeping a sound tooth is usually the first choice
A natural tooth sits in a ligament that cushions biting and gives you a fine sense of how hard you are chewing. It also keeps the bone around it in place. An implant does a good job of replacing a lost tooth, but it does not have that ligament, and it can develop its own gum and bone problems over the years. When a tooth can be saved predictably, saving it keeps future options open, because an implant usually remains possible later if the tooth eventually fails.
When a tooth cannot be saved, an implant is a strong, durable way to replace it rather than a second-best option. If an implant is not suitable, a bridge or a denture can also fill the gap, as compared in our article on implants, bridges and dentures.
Common questions
Is an implant better than a root canal?
Not as a rule. Long-term survival is broadly similar, so the better choice depends on how reliably your tooth can be saved.
Can a root canal tooth be replaced with an implant later?
Usually, yes. If a root canal treated tooth fails years later, an implant is often still an option, sometimes with a bone graft.
Which is quicker?
Root canal treatment and a crown are usually finished within weeks. An implant normally takes several months because the bone needs time to bond to it before the crown goes on.
How will I know which one my tooth needs?
An examination with X-rays, and sometimes a 3D scan, shows how much tooth and bone remain and whether there are cracks or infection that change the outlook.
Getting the tooth assessed
If you have been told a tooth needs either a root canal or an implant, or you are weighing the two, an examination and X-ray will show which makes more sense for that tooth. Lumi Dental offers free implant consults, and we can talk through both options with you. Visit our dental implants page or see current offers to book. If an implant is already in place and something feels wrong, our guide to signs of a failing implant may help.
This article is general information and is not a substitute for personal dental advice. For advice about your own teeth, please see a dentist.
