When a tooth is badly damaged or infected, the question usually comes down to two options: save it with a root canal, or remove it with an extraction.
Both are legitimate treatments. Neither is automatically better. The right choice depends on the tooth itself, how much structure remains, where it sits in your mouth, and what comes after.
Here is how each option works and what factors influence the decision.
What a root canal does
A root canal removes the nerve and pulp tissue from inside the tooth. This is the tissue that becomes inflamed or infected when decay reaches deep enough, or when a crack extends into the nerve chamber.
Your dentist cleans the canals inside the roots, disinfects them, and fills them with a biocompatible material. The tooth is then restored, usually with a dental crown, to protect it and restore full function.
The tooth stays in your jaw. It no longer has a nerve, so it will not feel temperature or pain, but it remains functional for biting and chewing. With proper care and a well-fitted crown, a root canal treated tooth can last for many years.
You can read a more detailed breakdown of the procedure in our root canal guide.
What extraction involves
An extraction removes the entire tooth from the socket. For a straightforward extraction, your dentist loosens the tooth and removes it under local anaesthetic. Surgical extractions, where the tooth is broken or impacted, may require an incision and removal in sections.
After extraction, the socket heals over several weeks. But the space left behind creates a secondary decision: do you replace the tooth, and if so, how?
Replacement options include dental implants, bridges, or in some cases a partial denture. Each has a different cost, timeline, and set of requirements. Leaving the gap is also an option for some back teeth, but it can lead to shifting of adjacent teeth and bite changes over time.
Factors that favour saving the tooth
Preserving a natural tooth is generally preferable when the tooth has enough remaining structure to support a crown. The reasons are practical.
A natural tooth maintains the bone around it. Once a tooth is extracted, the bone in that area begins to resorb. Over months and years, bone volume decreases. If you later decide to place an implant, you may need a bone graft to rebuild what was lost.
A natural tooth also maintains the spacing in your arch. Adjacent teeth do not shift. Your bite stays stable. And no prosthetic replacement, however well made, matches the proprioception of a natural tooth root in bone.
Saving the tooth typically makes sense when:
- The root structure is intact and not fractured vertically
- There is enough tooth structure above the gum line to support a crown
- The infection is confined to the pulp and has not caused severe bone loss around the roots
- The tooth is structurally important for your bite
Factors that favour extraction
There are situations where saving a tooth is either not possible or not practical.
Vertical root fracture. A crack that runs down the length of the root cannot be sealed or repaired. The tooth will continue to harbour bacteria along the fracture line regardless of treatment. Extraction is usually the only viable option.
Severe periodontal disease. If the bone supporting the tooth has been significantly lost due to gum disease, the tooth may be mobile even if the nerve is healthy. A root canal treats the inside of the tooth but does not restore lost bone support.
Extensive structural loss. When decay or fracture has destroyed most of the tooth above and below the gum line, there may not be enough sound tooth structure to hold a crown. Attempting to restore a tooth in this condition often leads to early failure.
Previous failed root canal. Retreatment of a root canal is possible in some cases, but success rates decrease with each attempt. If a tooth has already had a root canal that failed, and the anatomy or remaining structure makes retreatment unlikely to succeed, extraction and replacement may be more predictable.
Cost considerations. A root canal plus crown can cost more than a simple extraction. If the long-term prognosis of the tooth is questionable even after treatment, spending that money on a more predictable replacement option may make better financial sense.
Your dentist can walk through the specific factors for your tooth. If you are weighing options, book a consultation to get a clear picture of what each path involves.
Comparing costs in Brisbane
Indicative pricing for each pathway:
- Root canal (single canal): from $900 to $1,500
- Root canal (molar, multiple canals): from $1,500 to $2,500
- Crown after root canal: from $1,600
- Simple extraction: from $200 to $400
- Surgical extraction: from $350 to $600
- Dental implant (including crown): from $4,500 to $6,500
- Dental bridge (three-unit): from $3,500 to $5,000
Indicative pricing. Your quote may differ based on clinical assessment.
The upfront cost of extraction is lower. But if you replace the tooth with an implant, the total cost often exceeds the cost of a root canal and crown. This is worth factoring into the decision, particularly for teeth in visible or structurally important positions.
Health fund rebates may apply to both pathways. Check with your fund for specific item numbers. We process claims on the spot with HICAPS at our Everton Park and Nundah clinics.
What happens if you do nothing
Leaving an infected tooth untreated is not a neutral decision. Dental infections do not resolve on their own. The infection can spread to surrounding bone, adjacent teeth, or in rare cases to other parts of the body.
Pain may come and go. A tooth that stops hurting has not healed. It may have lost nerve function entirely, while the infection continues to progress at the root tip. This is why dental X-rays are important for diagnosis, as they show what is happening below the surface.
If you are experiencing pain, swelling, or prolonged sensitivity, see a dentist promptly. Our Brisbane clinics are open 7 days for emergency appointments.
Making the decision
Your dentist will assess the tooth with X-rays and a clinical examination. They will explain what they find, what the realistic prognosis is for each option, and what the costs and timelines look like.
Some decisions are clear-cut. A vertically fractured root cannot be saved. A tooth with a contained pulp infection and solid structure is a strong candidate for root canal treatment.
Other cases sit in the middle, where either option is reasonable and the decision comes down to your priorities: budget, timeline, long-term plans, and how important the tooth is to your function and appearance.
A good dentist will give you the information to make that decision rather than making it for you.
If you are facing this choice, call (07) 3266 7120 or book a consultation online. We will assess the tooth, explain your options clearly, and give you a written quote for each pathway so you can decide with full information.
Individual clinical situations vary. Treatment recommendations are based on assessment of your specific tooth, bite, and overall oral health.
