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What to expect before, during and after treatment

If there is one question that comes up again and again about root canal treatment, it is this:

Will it hurt?

The reputation of root canal treatment means you might be worried before you’ve even spoken to a dentist about what actually happens.

Root canal treatment is normally carried out using local anaesthetic to numb the tooth and surrounding area.

The NHS explains that patients are usually awake during treatment but local anaesthetic is used so that they should not feel pain during the procedure.

That doesn’t mean everybody’s experience is identical, and it doesn’t mean you won’t notice anything at all.

Let’s separate what you might feel from what you might notice.

Will I be numb for root canal treatment?

Normally, yes.

Local anaesthetic is used before treatment begins.

Your clinician will allow time for the anaesthetic to work and check the area before starting treatment.

Some teeth can be more challenging to numb than others, particularly where there is significant inflammation.

If you can still feel discomfort, tell your clinician.

You aren’t expected simply to put up with it.

What might I notice during treatment?

Even when an area is numb, you can still be aware that dental treatment is taking place.

You might notice:

  • pressure
  • movement
  • vibration
  • water
  • sounds from the equipment
  • your clinician working around the tooth

These sensations are different from pain.

If you are unsure about something you are feeling, tell your clinician.

Why does root canal treatment have such a bad reputation?

There are probably several reasons.

One is that people often associate the pain that led to treatment with the treatment itself.

A tooth requiring root canal treatment can sometimes be extremely painful before the procedure.

There are also stories passed between friends, relatives and online communities – and difficult experiences naturally tend to be remembered and retold.

Dental techniques, anaesthesia and equipment have also changed over time.

None of that means we should promise you that treatment will be completely sensation-free.

It means that frightening stories aren’t a reliable prediction of your experience.

What if I’m really nervous?

Tell us.

You won’t be the first person to say:

“I’m frightened of having a root canal.”

Knowing that you’re anxious helps your dental team support you.

Before treatment, it can be useful to agree:

  • how you will signal if you want your clinician to stop
  • whether you’d like them to explain each stage
  • whether you would prefer less detail
  • what you’re particularly worried about

Some people feel reassured by understanding everything.

Others would rather not hear a running commentary.

Both are reasonable.

Will it hurt afterwards?

Your tooth and the surrounding tissues may feel tender or sore after treatment.

The NHS advises that the area around the tooth can feel sore or swollen and should improve as it recovers.

How you feel will depend on the tooth and treatment you’ve had.

Your clinician will give you appropriate aftercare advice.

If you’re concerned about your symptoms after treatment, contact the practice.

How long will my mouth stay numb?

The effect of local anaesthetic can continue after your appointment.

Your clinician will give you advice about eating and drinking while your mouth is numb.

Take care not to accidentally bite your lip, cheek or tongue while normal sensation is returning.

Is root canal treatment painful if the tooth is infected?

A tooth that is very inflamed can sometimes be more challenging to numb.

That doesn’t mean treatment should simply continue regardless of your comfort.

Your clinician will assess the situation and use appropriate anaesthetic techniques.

If you’ve experienced difficulty becoming numb during dental treatment before, tell us.

That is useful clinical information.

Will a specialist root canal be less painful?

This isn’t a claim we would make.

Seeing a Specialist Endodontist doesn’t mean Evolve can promise a pain-free experience or that treatment will necessarily feel different from root canal treatment provided by another dentist.

Specialist endodontic care may be considered because of the complexity of the clinical problem, not as a guarantee about comfort or outcome.

At Evolve, Dr Alex Brett, Specialist Endodontist, provides specialist endodontic assessment and treatment.

Read: What is an endodontist and why might I need to see one?

Myth versus reality

Myth: Root canal treatment is always extremely painful

Reality: Local anaesthetic is normally used. Experiences vary, and some tenderness after treatment can occur.

Myth: I won’t feel anything whatsoever

Reality: You may notice pressure, movement, vibration and other sensations even when the tooth is numb.

Myth: If it hurts afterwards, the treatment hasn’t worked

Reality: Some tenderness can occur following treatment. If you’re concerned about the amount of discomfort or how it is progressing, contact your clinician for advice.

Myth: Seeing a specialist guarantees pain-free treatment

Reality: Specialist status relates to recognised training and registration in a particular field. It isn’t a guarantee about pain or treatment outcome.

What can I do before my appointment?

The most useful thing is to tell us what you’re worried about.

You can also:

  • ask how long the appointment is expected to take
  • ask what will happen
  • tell us about previous difficult dental experiences
  • tell us if you’ve previously been difficult to numb
  • ask what you should do if you want a pause
  • ask about aftercare before you leave

Being informed can remove some of the uncertainty surrounding treatment.

Questions patients often ask

Can I stop the dentist during root canal treatment?

You can agree a signal with your clinician before treatment begins so that you can let them know if you need their attention or a pause.

Is the injection painful?

People experience local anaesthetic differently. You may notice the injection and some temporary discomfort as the anaesthetic is administered.

Can I drive after root canal treatment?

Local anaesthetic alone does not normally prevent you from driving, but individual circumstances can vary. Follow any specific instructions your clinician gives you, particularly if any medication or sedation has been used.

What should I do if my tooth is very painful afterwards?

Follow the aftercare instructions you’ve been given. If the level of discomfort concerns you, symptoms are worsening or something doesn’t feel right, contact the practice.

Key takeaways

  • Root canal treatment is normally carried out using local anaesthetic.
  • Being numb doesn’t mean you won’t notice pressure or movement.
  • Some soreness after treatment can occur.
  • Tell your clinician if you’re anxious or uncomfortable.
  • Someone else’s difficult experience doesn’t predict yours.
  • No dentist should promise “pain-free” treatment.

Want to know what actually happens?

Follow the treatment from assessment through to restoring the tooth.

Read: What happens during root canal treatment?

Or download:

Your guide to root canal treatment

What it means, what to expect and understanding your options

Root Canal Guide

If you’d like to discuss specialist endodontic care with Evolve, you can self-refer or ask your dentist to refer you.

Speak to our team about an endodontic assessment

For independent information, see the  ⁠NHS guide to root canal treatment.

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