Root canal treatment may well be the most feared procedure in dentistry. The very mention of it is enough to make many patients visibly anxious, and it has a cultural reputation as the benchmark for unpleasant experiences — a reputation that is almost entirely undeserved. The reality is that modern root canal treatment is a routine procedure carried out under local anaesthetic, and for most patients it is no more uncomfortable than having a filling.
This article separates the most persistent myths about root canal treatment from the facts, with the aim of helping patients approach the procedure with accurate expectations rather than unnecessary dread. Root canal treatment is an important part of general dentistry, and understanding it properly can be the difference between saving a natural tooth and losing it unnecessarily. If your dentist has recommended root canal treatment, this guide will help you understand exactly what to expect.
What Is Root Canal Treatment?
Inside every tooth, beneath the hard enamel and dentine, is a soft tissue called the dental pulp. The pulp contains nerves, blood vessels, and connective tissue. In a developing tooth, the pulp plays an important role — but once a tooth is fully formed, it can survive without the pulp, drawing nourishment from the surrounding tissues instead.
When the pulp becomes infected or dies — as a result of deep decay, a cracked tooth, repeated dental procedures on the same tooth, or trauma — root canal treatment removes the damaged pulp, cleans and disinfects the internal canals, and seals the tooth to prevent reinfection. The aim is to save the natural tooth and eliminate the infection, avoiding the need for extraction.
Myth 1: Root Canal Treatment Is Extremely Painful
Fact: Root canal treatment does not cause pain — it relieves it. The pain associated with a tooth that needs root canal treatment comes from the underlying infection, not from the treatment itself. The procedure is carried out under local anaesthetic, which effectively numbs the tooth and surrounding area. Most patients report that the actual procedure is no more uncomfortable than having a filling.
The myth of the painful root canal stems largely from a time when local anaesthetics were less effective and techniques were more primitive. Modern dentistry, with its highly effective anaesthetic agents and refined instruments, has transformed the patient experience. If you are nervous, let your dentist know — they can take extra care to ensure you are fully numb before starting and can manage the procedure at a pace that suits you.
Myth 2: It Is Better to Just Have the Tooth Out
Fact: Keeping your natural tooth is almost always preferable to extraction, where possible. Your natural teeth are stronger and more functional than any artificial replacement, and they help to maintain the structure of your jaw and the alignment of surrounding teeth. When a tooth is extracted, the bone in that area gradually resorbs, which can affect facial appearance over time and create complications for adjacent and opposing teeth.
Tooth replacement options — dentures, bridges, implants — can all restore function and appearance to varying degrees, but they are more complex and usually more expensive than preserving the natural tooth through root canal treatment. An implant, which is often considered the gold-standard replacement for a missing tooth, typically costs significantly more than root canal treatment followed by a crown.
Myth 3: Root Canal Treatment Causes Illness
Fact: This myth has its origins in flawed research carried out in the early 20th century and has been thoroughly debunked by modern science. There is no credible scientific evidence that root canal treatment causes systemic illness, cancer, heart disease, or any other health condition. The claim continues to circulate on social media and alternative health websites, but it has no basis in contemporary research.
According to NHS guidance on root canal treatment, the procedure is safe and effective and should not be avoided based on such claims. Major dental and medical organisations worldwide, including the British Dental Association, confirm that root canal treatment is a safe and well-established treatment.
Myth 4: The Treatment Always Requires Multiple Long Appointments
Fact: Many root canal treatments can be completed in a single appointment, typically lasting between 60 and 90 minutes. Whether one or two appointments are needed depends on the complexity of the case — the number and shape of the root canals, the extent of the infection, and whether the canals need time to settle before being sealed. Some teeth, particularly upper back molars with multiple curved canals, may require more time, but advances in rotary endodontic instruments have made the process considerably faster and more efficient than it once was.
Myth 5: A Root Canal-Treated Tooth Will Not Last
Fact: A well-performed root canal treatment, followed by an appropriate restoration (usually a crown), can last the lifetime of the tooth. Studies show that root canal-treated teeth have survival rates comparable to natural unaffected teeth when properly restored and cared for. The most common reason for failure is not the root canal treatment itself, but inadequate coronal restoration — in other words, not having a crown placed when one is needed, leaving the tooth vulnerable to fracture.
Maintaining the tooth through regular check-ups and good home care is also important. A root canal-treated tooth is no longer supplied by a nerve, so you will not feel pain if new decay develops — making regular dental examinations even more important after the procedure.
Myth 6: Root Canal Treatment Is Only Needed When You Are in Severe Pain
Fact: Not all teeth that require root canal treatment are painful. In some cases, the pulp dies gradually and quietly, without the patient experiencing significant symptoms. The infection may then be detected on a routine X-ray, even though the patient feels no discomfort. Conversely, a tooth in severe pain may still be treatable with a simple filling if the pulp remains vital and the decay has not reached the nerve.
This is one of the reasons why regular dental check-ups and X-rays are so important. They allow problems to be identified before they become symptomatic and more complex to treat.
Root Canal Myths vs Facts: At a Glance
| Myth | Fact |
|---|---|
| Root canal treatment is extremely painful | It is performed under local anaesthetic and relieves pain rather than causing it |
| It is better to extract the tooth | Preserving your natural tooth is almost always the better long-term option |
| Root canals cause illness and disease | This claim is based on debunked 20th-century research; the procedure is safe |
| It always requires several lengthy appointments | Many root canals are completed in a single appointment of 60-90 minutes |
| Root canal-treated teeth do not last | With proper restoration and care, they can last a lifetime |
| You will know you need it because you will be in agony | Some teeth requiring root canal treatment cause no pain at all |
What to Expect After Root Canal Treatment
After the procedure, it is normal for the tooth and surrounding area to feel tender for a few days. This is a result of the inflammation in the tissues around the root tip and is part of the natural healing response. Over-the-counter painkillers such as paracetamol or ibuprofen are usually sufficient to manage this discomfort. Most patients are comfortable enough to return to their normal activities the following day.
In the days following treatment, try to avoid chewing on the treated tooth until the final restoration (usually a crown) has been placed. A temporary filling is placed at the end of the root canal appointment to protect the tooth in the interim. Your dentist will arrange a follow-up appointment to complete the restoration.
How to Prevent the Need for Root Canal Treatment
The best way to avoid root canal treatment is to prevent the conditions that make it necessary in the first place. Regular dental check-ups allow decay and cracks to be detected and treated before they reach the pulp. Good home care — brushing twice daily with fluoride toothpaste, using floss or interdental brushes daily, and limiting sugary foods and drinks — significantly reduces your risk of developing cavities. If you play contact sports, wearing a properly fitted mouthguard can help to prevent traumatic dental injuries.
If your dentist has recommended root canal treatment, the best thing you can do is to proceed with the treatment sooner rather than later. Delaying will not make the procedure easier — it will allow the infection to progress, potentially spread, and make treatment more complex.
At Tarbert Dental Surgery, we understand that the prospect of root canal treatment can feel daunting, and we take the time to explain every step of the procedure so that you feel fully informed and reassured before we begin. Our aim is to make every treatment as comfortable and stress-free as possible. If you have been told you need root canal treatment, or if you are experiencing dental pain and want to know your options, please call us on 01880 820387 — we are here to help.