When a tooth's nerve is dying or infected, you have two main paths: save it with a root canal, or remove it. Here is how to make the call confidently.
Why saving the natural tooth is usually first choice
Modern dentistry strongly favors keeping natural teeth when possible. Reasons:
- Bone preservation - natural teeth keep the surrounding jawbone exercised. Extraction starts the bone-loss clock immediately.
- Proprioception - natural teeth have nerve fibers in their ligaments that help you sense bite force. Implants don't have this - patients with implants more often bite too hard.
- Adjacent tooth stability - extracted teeth let neighbors drift over months and years.
- Aesthetics - gum and bone architecture is preserved with the natural tooth.
- Cost - root canal + crown totals around $2,000-$3,000; implant + crown around $4,000-$6,500.
When a tooth can be predictably saved with a root canal, that is usually the right call.
When a root canal is the clear winner
A root canal is the right choice when:
- The tooth has good remaining structure to support a crown.
- The infection is contained to the pulp and root tip area.
- There is no vertical root fracture.
- The patient has reasonable periodontal health (no advanced bone loss).
- The tooth is in a structurally important position (any front tooth, any first molar, any second molar with intact opposing).
- The patient prefers to keep the natural tooth.
Success rate for these cases: 90-95% long-term.
When extraction is the better call
Sometimes extraction is clinically the right answer:
- Vertical root fracture - these cannot be predictably treated; the tooth will likely fail anyway.
- Severe periodontal bone loss - the tooth has lost most of its support. A root canal won't fix the foundation problem.
- Tooth structure too compromised to support a final crown - even with a post and core.
- Previously failed root canal with limited room for re-treatment, especially when the canal anatomy is complex.
- Wisdom teeth or non-functional teeth - replacement may not be necessary.
- Resorption damage has consumed too much of the root.
In these cases, we discuss replacement options (implant, bridge, partial denture) at the same visit.
Lifestyle and cost factors
Clinical factors come first, but real-world considerations matter:
- Cost in the next 6 months: Extraction is usually cheapest in the short term ($200-$400). Implant + crown over 6-12 months runs $4,000-$6,500. Root canal + crown over 1-2 months runs $2,000-$3,000.
- Insurance coverage: Most plans cover root canals at the basic-restorative tier and crowns at the major tier. Implants are sometimes covered at the major tier; bridges are typically covered at the major tier.
- Time and visit count: Root canal + crown can be done in 2-3 visits over 4-6 weeks. Implant + crown takes 4-6 months total.
- Health considerations: Some patients (heavy smokers, uncontrolled diabetics, bisphosphonate users) have higher implant failure rates and benefit from saving the natural tooth.
- Patient preference: For some patients, a "definitive" extraction-and-implant plan is more appealing than a root canal that "might fail." This is reasonable when discussed with full information.
How we run the consultation
For a tooth with significant pulp involvement, our process:
- Comprehensive exam - periodontal probing, percussion test, thermal test, X-rays.
- CBCT 3D imaging for complex cases - checks for missed canals, fractures, and root anatomy invisible to 2D X-rays.
- Honest assessment of prognosis - sometimes we recommend extraction even when the patient was hoping for a root canal, and vice versa.
- Cost breakdown for both paths.
- Time and visit estimate for both paths.
- Patient choice - with full information, we proceed with the patient's preferred path.
Occasionally we recommend a referral to a specialist endodontist for difficult cases.
Frequently asked questions
- How do I know if my tooth is saveable?
- A clinical exam, X-rays, and sometimes CBCT imaging are the way to know. We share the findings with you and discuss the prognosis honestly.
- What's the long-term failure rate of a root canal?
- Modern root canals have a 90-95% 10-year success rate when followed by a properly placed crown. The most common failure mode is fracture of the tooth (not the root canal itself), which is why the crown matters.
- Is an implant always better than a root canal?
- No. A successful root canal is usually less invasive, less costly, and avoids surgery. Implants are an excellent option when the tooth cannot be saved - but they aren't a "better" option for a tooth that can be saved reliably.
- What if I delay the decision?
- A few weeks is usually fine for a stable, asymptomatic tooth. An actively infected tooth should not wait - infection can worsen quickly. We schedule based on urgency and your preference.