Root canal treatment in Rugby · the honest guide
Root canal or extraction? How the decision is actually made
Written by Dr Tim Bond, principal dentist at Rugby Smiles, postgraduate diploma in endodontics, University of Warwick · Reviewed September 2026
The short answer: if the tooth has a future, save it. If it is too broken down or cracked to last, take it out and plan the replacement. The decision is made from an X-ray and the amount of tooth left, not from the price list.
Patients often arrive having already decided: just pull it out, it is cheaper. Sometimes that is right. More often the tooth can be saved for £450 to £550 and a crown, and taking it out starts a chain that costs far more and ends with something that is never quite as good as the original. Here is how we weigh it, tooth by tooth.
In pain now? Call 01788 579 577 for a £50 same-day emergency slot. Root canal treatment in Rugby.
When a root canal is the right call
- Enough sound tooth left above the gum to rebuild, with or without a crown
- A root that is intact, with no crack running down it
- Healthy gum and bone around the tooth
- A tooth that matters for chewing or for the look of your smile, which is most of them
- An infection that is treatable by cleaning the canals, which nearly all are
“Nothing we can make beats a working natural root. That is not sentiment; it is why implants, bridges and dentures are all measured against the tooth they replace.”
Dr Tim Bond, principal dentist, Rugby Smiles
When extraction is the honest answer
- A crack that runs below the gum line, which no filling or crown can hold together
- So little tooth left that a crown has nothing to grip
- Severe gum disease that has loosened the tooth in its socket
- A previous root canal that has failed and cannot be re-treated
- A patient who cannot, or does not want to, commit to the crown a root-treated back tooth needs
In those cases a root canal is £450 spent on a tooth that fails in a year, which is worse than no treatment at all, and we will say so.
The ten-year cost of each route
Save it
Root canal £450 to £550, plus a crown at £700 for most back teeth. Around £1,250 all in, and the tooth typically lasts ten to twenty years, often for life.
Remove it, leave the gap
From £160 on the day. Then the neighbours drift, the opposite tooth over-erupts, and chewing shifts to one side. Cheapest today, dearest in ten years.
Remove it, replace it
Extraction from £160, then an implant from £3,000, a bridge at £700 per unit, or a denture. Twice the cost of saving the tooth, for something that is never quite the original.
The exception is a tooth that has no future. Spending £1,250 to save it is the expensive mistake in that case, and replacing it early, before the bone shrinks, is the better plan. Dental implants and dentures versus implants cover the replacement side.
What happens at the assessment
An X-ray, a look at how much tooth remains, a check of the gum and bone, and a straight answer. If it is a root canal, the price and whether a crown is needed go in writing before we start. If it is an extraction, the extraction page covers what to expect, and we plan the replacement with you rather than leaving a gap by default.
The cost of the gap nobody prices on the day
Bone needs a tooth root to stay put. Within the first year after an extraction the bone under the gap shrinks noticeably, and it keeps shrinking slowly for years. That is why a bridge or denture fitted over an old gap never quite sits right, why implants placed late often need a graft first, and why the cheapest option on the day quietly becomes the dearest. The teeth either side drift into the space and the tooth above or below grows down into it, which changes your bite and makes cleaning harder. None of that happens when the root is kept.
Pain, honestly compared
Root canal
Numb throughout, 60 to 90 minutes, then a few days of tenderness to bite. No socket, no stitches, nothing to heal beyond the tip of the root.
Extraction
Numb throughout, 10 to 40 minutes, then a socket that takes a week or two to settle and a small risk of a dry socket, which is genuinely painful. A surgical extraction adds stitches and swelling.
The honest verdict
Neither hurts during. Afterwards, a root canal is usually the easier week.
Success rates, and what failure looks like
Around nine in ten root canals succeed, and a crowned back tooth pushes that higher. When one fails it is usually a missed canal, a crack, or a leaking filling years later, and the options are re-treatment by a specialist or extraction and replacement. Extraction, by contrast, always succeeds at removing the tooth and always leaves the gap. The question is not which is safer; it is whether your tooth has a future. Do I need a crown afterwards? covers what protects the investment.
Questions people ask
Is it better to have a root canal or an extraction?
If the tooth can be saved predictably, a root canal. Your own tooth outlasts and outperforms any replacement. If it cannot, extraction and a planned replacement is the honest choice.
Is an extraction cheaper than a root canal?
On the day, yes: from £160 against £450 to £550. Over ten years, no, once the gap is filled with an implant, bridge or denture.
Can I just leave the gap after an extraction?
You can, but neighbouring teeth drift, the tooth above or below over-erupts, and chewing shifts. A back tooth gap is more forgiving than a front one, and we will tell you honestly which yours is.
How long does a root-treated tooth last?
With a crown, ten to twenty years is typical and many last for life. Without a crown on a back tooth, considerably less.
What if I have already been told to extract it?
Ask for a second look. Some teeth are genuinely beyond saving; some are simply harder to save than a busy practice wants to take on. We will tell you which yours is.
What happens to the bone after an extraction?
It shrinks, most in the first year, and keeps shrinking slowly. That is why replacements fitted late often need a graft, and why keeping the root is worth so much.
Is a root canal less painful than an extraction?
During, neither hurts. Afterwards a root canal usually means a few days of tenderness; an extraction means a socket that takes a week or two to settle.
Get a straight answer on your tooth
An assessment with an X-ray tells you whether the tooth is worth saving, what it will cost in writing, and whether it needs a crown afterwards. If the answer is extraction, we say so.
Read next: what it costs · tooth extraction · root canal treatment in Rugby · Rugby Smiles Dental Clinic · 3 Newbold Road, Rugby CV21 2LQ · 01788 579 577