Root canal therapy is one of the dental treatments most surrounded by myths. Many patients arrive at the consultation with fear, outdated ideas, or contradictory advice they heard in the family, on social media, or in a clinic 20 years ago. These are the 7 myths we hear most at Endodontics El Salvador, San Miguel — with updated evidence so you can make well-informed decisions. If you want to start with the basics, they are in What is a root canal and when do you need one?
Myth 1: Does a root canal hurt?
"A root canal is one of the most painful treatments out there."
Root canal treatment uses local anesthesia to control pain. Tell the clinician if you feel pain during the procedure. Some discomfort may follow; seek advice if it is severe, worsens, persists, or swelling develops.
Myth 2: Is it better to pull the tooth than to have a root canal?
"It is better to extract the tooth than to have a root canal."
It depends on the diagnosis. Keeping a restorable tooth with a favorable prognosis can be a good option. If a fracture, insufficient structure, or compromised support prevents this, extraction and replacement are considered.
Myth 3: Does a root canal kill the tooth?
"A root canal kills the tooth."
Technically false. What is removed during a root canal is the pulp tissue (the nerves and blood vessels inside the tooth), but the tooth doesn't "die": it remains supported by the periodontal ligament, retains its root, its enamel, its dentin, and most of its function. It is still your tooth. What changes is that it no longer responds to thermal stimuli as before, because it no longer has pulp.
Myth 4: Do root canals cause cancer or other diseases?
"Root canals cause cancer or other diseases."
The American Association of Endodontists explains that there is no valid scientific evidence that root canal treatment causes cancer or other general diseases. A social media post or historical claim does not replace assessment of the evidence.
Myth 5: If it doesn't hurt, do I still need a root canal?
"If it doesn't hurt, I don't need a root canal."
A lack of pain does not rule out a dental problem. It also cannot by itself establish whether the pulp is healthy or a root canal is needed. Examination and indicated tests guide diagnosis.
Myth 6: How many appointments does a root canal take?
"A root canal takes many appointments."
Many treatments take one or two visits; complexity and treatment response can change that number. For initial root canal treatment at $390, a second visit is included if needed. The final restoration is planned according to the case.
Myth 7: Is a root canal more expensive than an implant?
"A root canal is very expensive — an implant is a better deal."
Compare complete options: initial root canal treatment and crown, $690–$840; implant with abutment and zirconia crown, from $999. Extraction, grafting, or other additional procedures are quoted after evaluation. Prognosis and visits also matter when deciding. Read more: dental implant with crown · Root canal or extraction?
How to tell reliable information from misinformation
If you are going to research about root canals, look for sources that meet these criteria:
- Professional associations: American Association of Endodontists (AAE), American Dental Association (ADA), Latin American endodontic federations.
- Peer-reviewed studies: published in Journal of Endodontics, International Endodontic Journal, JADA.
- Certified specialists: endodontists with postgraduate training, not just opinions from the internet or social media.
- Quality and relevance: consider the study question, methods, and whether its conclusions apply to the case. Date alone does not determine validity.
What is true
To wrap up, these are statements that do have scientific support:
- A microscope helps reveal details; the outcome also depends on the tooth’s condition, treatment, and restoration.
- A root-canaled tooth generally needs a protective crown, especially if it is a molar or premolar.
- A clinician’s training and experience help assess complexity and determine when referral is appropriate.
- A treated tooth may function for years. If problems develop, causes and options are assessed, including retreatment when indicated.
- Digital radiography has transformed the diagnosis of complex cases.
If you have questions, ask
During a consultation, you can ask about the diagnosis, alternatives, and their limits. At Endodontics El Salvador in San Miguel, evaluation costs $35 and includes a digital periapical X-ray.
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