When a tooth is badly decayed or infected, the choice often comes down to dental implant vs root canal: save the tooth you have, or replace it with an artificial one. Both are common dental treatments, and both can leave you with a comfortable, working tooth, but they solve very different problems.
Understanding the difference makes the choice much clearer. This guide explains what each treatment involves, when a dentist tends to recommend one over the other, and how they compare on cost, recovery and how long they last.
Quick Overview
- A root canal saves your natural tooth by removing infected or damaged pulp from inside it, then sealing and protecting it.
- A dental implant replaces a tooth that is already missing or beyond saving, using an artificial tooth root topped with a crown.
- As a rule, we aim to keep your natural tooth where we can, so a root canal is often the first option considered.
- The right choice depends on how much healthy tooth is left, the state of the surrounding bone, and your overall dental health.
Below, we break down each treatment, when it suits, and how the two compare side by side.
Dental implant vs root canal: what’s the difference?
The simplest way to think about it is this: a root canal preserves a tooth, while a dental implant replaces one. A root canal treats a tooth that is still in your mouth but has an infected or damaged pulp inside. A dental implant steps in only once a tooth is gone, or is too damaged to keep.
That single distinction drives everything else. A root canal works with your natural tooth structure, keeping the original tooth and its root in place. An implant starts fresh, placing an artificial tooth root into the jaw where the missing tooth used to sit. You will sometimes see this framed as root canal vs implant, but the two are not really rivals; they answer different questions. When a dentist weighs up whether you need either a root canal or an implant, the first thing they check is whether the tooth can still be saved. For example, a back tooth with a deep cavity that has reached the nerve but still has solid walls is a classic root canal candidate. A tooth knocked out in an accident, with no root left to treat, is a clear case for an implant. Knowing which situation you are in, saving a tooth or replacing one, is the key to the whole comparison.
What is a root canal, and how does it work?
A root canal treatment removes the infected or damaged pulp from inside a tooth, then cleans, fills and seals it so the tooth can stay in place. It is designed to save a tooth that would otherwise need to be removed. It is also one of the most common dental treatments, and for many teeth it is the difference between keeping them and losing them.
What a root canal treats
Inside every tooth is a soft centre called the pulp, made up of nerves and blood vessels. When deep decay, a crack or an injury lets bacteria reach the tooth’s pulp, the result can be an infected tooth that aches, throbs or becomes sensitive. Left untreated, that infection tends to spread, and the tooth may eventually need to come out. A root canal is the usual way to treat significant decay that has reached the pulp, and a tooth can keep working normally once its damaged pulp is removed. The main alternative is removing the tooth altogether, which is a big part of why saving it is so often the goal.
The root canal procedure
A root canal is carried out over a few clear steps. Your dentist numbs the tooth with local anaesthesia, and the dentist drills a small opening to reach the infected pulp and infected tissue inside. After the pulp is cleaned out and the space is disinfected, the canals are filled and sealed. In many cases, your dentist performs this treatment procedure, also called root canal therapy, over one or two appointments. A permanent dental crown or dental filling is then placed on top to protect the treated tooth. Because a root canal preserves your natural tooth structure, it is often described as the more conservative option compared with an extraction.
What is a dental implant, and how does it work?
A dental implant replaces a missing tooth with an artificial one. A small metal post is placed into the jaw to act as a new tooth root, and once it has settled, a crown is attached on top to complete the tooth.
The dental implant procedure
Dental implant surgery happens in multiple stages. If a damaged tooth is still in place, it is removed first, so tooth extraction may be step one. Your dentist then places the titanium post into the jaw, where it takes the role of the natural root. In effect, dental implants act as artificial tooth roots, taking over the job the natural root once did. Over a healing period of roughly three months, the surrounding bone grows around the post and holds it firmly, a process that gives the implant its stability. Only then is the final restoration, a custom crown, fitted to the implant.
What the process asks of you
Because it is a surgical procedure, the dental implant process asks a little more of you than a filling. A dental implant requires enough healthy bone to anchor the post, so your dentist examines the site and may take scans before recommending it. If there is not enough bone, a graft may be needed first, which adds to the timeline. There are different types of dental implants to suit different gaps, from a single missing tooth to a full arch. Implant placement is generally comfortable under local anaesthesia, and for anxious patients, sedation dentistry can make the experience easier. As a more invasive procedure than a filling, an implant is planned carefully, but the trade-off is a stable, long-lasting tooth replacement that looks and works much like the original tooth.
When is a root canal the right choice?
A root canal is usually the right choice when there is still enough healthy tooth to save. If the outer tooth structure is sound and only the pulp is infected or damaged, keeping your natural tooth is almost always preferable to removing it.
Your dentist will usually lean towards a root canal, because nothing replaces a natural tooth quite as well as the tooth itself. Saving the original tooth keeps your natural bite, protects the surrounding bone, and avoids the gap that comes with tooth loss. So long as the affected tooth is restorable, a root canal, followed by a crown, is often the first path your dentist will suggest for the same dental problem an implant would otherwise fix later.
Signs that a tooth might be saved this way include ongoing toothache, lingering sensitivity to hot or cold, or a tooth that is tender to bite on but still solid. In cases like these, treating the pulp and keeping the tooth is usually kinder to your mouth over the long term than removing it and starting again with a replacement.
When is a dental implant the right choice?
A dental implant becomes the sensible option once a tooth cannot be saved. If a tooth is lost, cracked below the gum, or has severe decay that leaves too little healthy structure behind, there may be nothing left to repair, with dental implants advised as the replacement.
There are a few common situations where an implant makes sense rather than a root canal:
- The tooth has already been lost to injury, severe decay or advanced gum disease.
- A previous root canal fails, and the tooth cannot be re-treated.
- The tooth is so broken down that a crown would have nothing solid to sit on.
In each case, the decision is no longer root canal or implant, because a root canal needs a tooth to work with. Once you are dealing with missing teeth, whether that is one tooth or several, an implant is one of the most reliable ways to restore the gap.
Cost, recovery and how long each lasts
For many patients, cost and recovery time are important factors, so it helps to compare the two directly. Neither is simply better; they suit different situations.
Cost
A root canal generally has a lower upfront price than an implant, though adding a crown increases the total. A dental implant usually carries a higher initial cost, because it involves surgery, materials and several visits. Root canal treatment costs and implant costs both vary with the tooth and the case, so your dentist will give you a clear quote. Because an implant involves more steps, its total reflects the surgery, the post and the crown, whereas a root canal and crown together often come to less overall. Insurance coverage or a health fund may offset part of either treatment, and it is worth asking about payment options if cost is a concern.
Recovery and appointments
A root canal is the quicker route, often wrapped up in one or two appointments with little downtime, and most patients get back to their day soon afterwards. An implant is a more invasive treatment process spread across multiple stages, with a healing period of a few months while the bone bonds to the post. The overall timeline is longer, even though each individual visit is usually straightforward and the day-to-day recovery after each one is mild.
How long each lasts
Both can last many years with proper care. A treated tooth can serve you for decades, although a root canal tooth can become brittle, which is why a crown is added. Implants rarely fail once the bone has healed around them, but they are not immune to problems, and gum disease around an implant can still cause it to loosen. In truth, how long either lasts depends heavily on proper care and your general dental health, not on the treatment alone.
Looking after your tooth or implant
Whichever path you take, the aftercare is refreshingly familiar: look after it like any other tooth. Good oral hygiene protects both a treated tooth and an implant, and supports your overall oral health at the same time.
Brush twice a day, clean between your teeth, and keep up regular dental visits so any issue is caught early. A natural tooth that has had a root canal can still decay at the edges, so it needs the same attention as the rest of your teeth. An implant cannot decay, but the surrounding gums can still be affected by gum disease if plaque builds up, so cleaning around it is just as important. Caring for either one is really just caring for your dental health as a whole.
Talking it through with Casey Dentists
Choosing between a root canal and an implant is rarely a decision to make alone, and it is not one you have to. At Casey Dentists, we assess the tooth, take the time to explain what we find, and talk you through whether saving or replacing it suits your situation, with sedation dentistry available if you feel anxious about treatment.
If you have a sore, damaged or missing tooth and are weighing up your options, please call us on 07 4801 7035 to arrange an appointment and get a clear recommendation for your tooth.
Frequently Asked Questions
Is a root canal painful?
A root canal is usually comfortable, not the ordeal many expect. Your dentist numbs the tooth with local anaesthesia, so most patients feel little during the treatment, and any tenderness afterwards tends to settle within a few days. If you feel nervous about the procedure, ask about sedation options that can help you relax.
What happens if I leave an infected tooth untreated?
Ignoring an infected tooth rarely makes the problem go away. The infection can spread deeper, cause an abscess, and damage the surrounding bone, and the tooth may eventually be lost altogether. Treating it early with a root canal is often what saves the tooth, so it is worth seeing your dentist promptly.
Can I ask for an implant even if my tooth could be saved?
You can discuss it, but your dentist will usually encourage you to keep a healthy natural tooth where possible. A natural tooth generally outperforms an artificial one, and a root canal is less invasive than removing the tooth and placing an implant. Your dentist can explain the pros and cons for your specific tooth.
Does a health fund cover root canals or dental implants?
It depends on your level of cover. Many private health funds contribute towards root canals and implants under their extras or major dental cover, but the amount varies, and there may be waiting periods. It is worth checking your policy and asking us for a treatment quote so you can compare the out-of-pocket cost.
Is there an age limit for dental implants?
There is no strict upper age limit for dental implants. What matters more is having healthy gums and enough bone to support the implant, which your dentist checks beforehand. Younger patients usually wait until the jaw has finished growing, but healthy adults of most ages can be suitable candidates.
Can a dental implant get infected or fail?
An implant itself cannot decay, but the gum and bone around it can become infected if plaque is left to build up, a condition known as peri-implantitis. Left unchecked, this can loosen the implant. The good news is that with regular cleaning and check-ups, implants rarely fail, and early problems can usually be managed.
Note: Any surgical or invasive procedure carries risks. Before proceeding, you should seek a second opinion from an appropriately qualified health practitioner.
References
https://www.betterhealth.vic.gov.au/health/conditionsandtreatments/dental-treatment
https://www.health.qld.gov.au/__data/assets/pdf_file/0035/363977/dental_10.pdf