
Few dental procedures generate more questions than root canal treatment. Despite being one of the most commonly performed procedures in dentistry, it remains surrounded by misunderstanding — particularly around pain, recovery, and whether it is truly necessary. This article addresses the questions patients ask most often, so you can approach the procedure with clear and accurate expectations.
The core purpose of root canal treatment is to remove infected or damaged pulp from inside a tooth, clean and seal the root canals, and preserve the tooth rather than extracting it. According to the NHS, around 9 out of 10 root-treated teeth survive for 8 to 10 years, which makes it one of the most reliable tooth-saving procedures available.
Does Root Canal Treatment Hurt?
This is by far the most common question, and the honest answer is: no, not during the procedure. Root canal treatment is carried out under local anaesthetic, which numbs the tooth and surrounding tissue completely. Most patients are surprised to find the procedure no more uncomfortable than having a standard filling placed.
The reason root canal has a reputation for being painful is largely historical. Older techniques were less refined, and anaesthetic protocols were not as effective. Modern dentistry has changed this significantly. If you are experiencing pain before your appointment, that is the infection causing the discomfort — the treatment itself is designed to relieve it.
How Many Appointments Will I Need?
This depends on the complexity of the infection and the anatomy of your tooth. Many cases can be completed in a single appointment of around 90 minutes. Others — particularly those involving significant infection or teeth with multiple or curved canals — may require two appointments. Your dentist will give you a clear indication during your initial assessment.
What Is Actually Done During the Procedure?
Your dentist will begin by taking X-rays to assess the shape of the root canals and the extent of any infection. A local anaesthetic is then applied, and a rubber dam is placed around the tooth to keep the area dry and prevent you swallowing any materials used during treatment.
A small opening is made through the crown of the tooth to access the pulp chamber. The infected or damaged pulp is removed using fine instruments, and the canals are carefully cleaned, shaped, and disinfected. Once clear, the canals are filled with a material called gutta-percha and sealed. A temporary or permanent restoration is then placed to protect the tooth.
Will I Need a Crown Afterwards?
In most cases, yes. A tooth that has undergone root canal treatment becomes more brittle over time because it no longer has a blood supply. Placing a crown over the tooth protects it from fracturing during normal biting and chewing. Without a crown, root-treated back teeth in particular are at a higher risk of cracking. Your dentist will discuss whether a crown is recommended in your specific case and arrange this as a follow-up appointment.
How Long Does Recovery Take?
Most patients feel well enough to return to normal activities the following day. Immediately after treatment, you may experience some mild soreness or sensitivity around the treated tooth as the anaesthetic wears off and the tissue begins to heal. This is quite normal and usually subsides within a few days. Over-the-counter pain relief such as ibuprofen or paracetamol is typically sufficient to manage any discomfort.
Is the Tooth Dead After Treatment?
Technically, yes — a root-treated tooth no longer has living pulp tissue inside it. However, this does not mean the tooth is no longer functional. It is still anchored in your jawbone by the periodontal ligament and can continue to work normally for many years, particularly if it is properly restored with a crown or filling.
Can the Infection Come Back?
In most cases, root canal treatment is highly successful and the infection does not return. However, there is a small possibility of reinfection, particularly if the seal on the canals breaks down over time, the tooth cracks, or new decay forms around the restoration. If infection does return, it is possible to repeat the procedure or, in some cases, to perform a minor surgical procedure called an apicoectomy to remove the root tip and address the problem.
What Happens if I Choose Not to Have the Treatment?
If root canal treatment is recommended and you choose not to proceed, the infection inside the tooth will continue to progress. This can lead to increasing pain, swelling, and in some cases the spread of infection to surrounding teeth, bone, or soft tissue. The tooth will ultimately need to be extracted. Tooth extraction is generally considered a last resort because losing a tooth affects bite mechanics and can lead to bone loss in the jaw over time.
Is Root Canal Available on the NHS?
Root canal treatment is available on the NHS, though not all teeth are considered viable for NHS treatment and there are criteria that apply. Private root canal treatment offers more flexibility in terms of appointment timing and the materials used. Your dentist will advise you on the options available and any associated costs at your consultation.
Common Questions at a Glance
| Question | Short Answer |
|---|---|
| Does it hurt? | No — performed under local anaesthetic |
| How many appointments? | Usually 1–2 appointments |
| Do I need a crown after? | Usually yes, especially on back teeth |
| How long does recovery take? | 1–3 days of mild soreness |
| Can it fail? | Rare, but reinfection is possible |
| What if I don’t have it done? | Infection spreads; tooth likely lost |
| Is it available on the NHS? | Yes, subject to clinical criteria |
Can I Eat Before My Appointment?
Yes — in fact, it is recommended that you eat a proper meal beforehand. After treatment, your mouth will be numb for several hours and eating will be awkward until sensation returns. Eating beforehand means you will not need to worry about food until the anaesthetic has fully worn off.
What Should I Do if I Have Questions Before My Appointment?
Your dental team is always the best source of information for your specific situation. Do not hesitate to call or email ahead of your appointment if anything is unclear. Knowing exactly what to expect helps enormously in managing anxiety, and a good dental team will take the time to address any concerns you have.
At Essential Dental Care, we believe that well-informed patients have better experiences. If you have questions about root canal treatment or want to discuss whether it is right for you, give us a call on 0131 229 1806 — we are here to help and would be glad to talk you through what to expect at every stage.




