When do I need a root canal?

Persistent pain, sensitivity, swelling, or a change in tooth color may need evaluation. Symptoms alone do not confirm the need for a root canal.

How long does a root canal take, and how many visits?

90% of cases are completed in one visit. Duration, appointments, and follow-up depend on diagnosis and treatment response. A second initial root canal visit is included if needed; restoration has its own timing.

What if I already had a root canal and it hurts again?

There can be different causes. Clinical and radiographic evaluation helps determine whether retreatment or other care is needed; retreatment is quoted individually.

What is a root canal and when do you need one?

Q: What is a root canal?

It is the treatment that saves a tooth when the pulp (the nerve) becomes inflamed or infected: the canals inside the tooth are cleaned, disinfected and sealed. The tooth stays in place and keeps working. It is also called root canal therapy or endodontic treatment.

Q: Does a root canal hurt?

Local anesthesia is used to control pain. Tell the clinician if you feel pain; seek advice if post-treatment discomfort worsens, persists, or swelling develops.

Q: How much does a root canal cost in El Salvador?

At Endodontics El Salvador, San Miguel, $390 for any tooth: a molar costs the same as a front tooth. The evaluation with X-ray costs $35 and the crown, if needed, $300 in zirconia or $450 in lithium disilicate. In the United States it costs $1,000–$3,000 without insurance.

If you have a toothache that won't go away, extreme sensitivity to cold or heat, or swelling in the gum that comes and goes, you may need a root canal. It is one of the most common procedures in dentistry and, contrary to what many people believe, it is the most effective way to save a tooth that would otherwise have to be extracted. At Endodontics El Salvador in San Miguel it costs $390, any tooth; below is the whole picture: what it is, when you need it, whether it hurts, how long it takes and what happens if an old root canal starts hurting again.

What exactly is a root canal?

A root canal — also called root canal therapy or endodontic treatment — involves removing the dental pulp (the soft tissue inside the tooth) when it is inflamed or infected. The internal canals of the tooth are cleaned, disinfected, and sealed to prevent the infection from returning. The tooth stays in place and continues to function normally.

What are the signs that I need a root canal?

These are the most common signs that you may need root canal therapy:

Intense and constant pain when chewing or when pressing on the tooth
Prolonged sensitivity to cold or heat that does not go away after removing the stimulus
Inflamed gums or an abscess (a small bump with pus near the tooth)
A change in tooth color: this can have several causes and needs evaluation.
Pain that wakes you up at night or appears spontaneously

Seek advice if you notice these symptoms. If pain is severe, worsening, or swelling develops, seek urgent dental care.

How does the procedure work?

Root canal therapy is completed in a single visit in most cases (when a second visit is needed, it is included in the price) and follows these steps:

Clinical and radiographic evaluation to establish the diagnosis and plan treatment.
Local anesthesia: used to control pain. Tell the clinician if you feel pain.
Access to the canal: A small opening is made in the crown of the tooth to reach the pulp.
Cleaning and disinfection: Using precision rotary instruments and disinfecting solutions, the infected tissue is removed.
Obturation: The canals are sealed with a biocompatible material.
Final restoration: A crown or restoration is placed to protect the tooth long-term.

Does a root canal hurt?

Local anesthesia helps control pain during root canal treatment. The microscope, rotary instruments, and apex locator support clinical work; they do not guarantee identical treatment time or sensation for every patient.

How long is recovery?

Sensitivity may occur after treatment. Follow the instructions you receive and seek advice if discomfort is severe, persists, worsens, or swelling develops. Recovery and return to activities depend on the case.

How much does a root canal cost in El Salvador?

At Endodontics El Salvador, San Miguel, a root canal costs $390, any tooth: a molar costs the same as a front tooth, and if a second visit is needed, it is included. The evaluation with digital X-ray costs $35. If the tooth needs a crown afterwards, it costs $300 in zirconia or $450 in lithium disilicate. In the United States the same root canal costs $1,000–$3,000 without insurance; the full comparison is in How much does a root canal cost in El Salvador? and the treatment details are on the root canal in San Miguel page.

How it compares with extraction

Keeping a restorable tooth with a favorable prognosis can be a good option. Evaluation compares its prospects with extraction and replacement options, considering function, preferences, and budget. Read more: Root canal or extraction?

What if I already had a root canal and the tooth hurts again?

Pain after root canal treatment can have different causes. The tooth and restoration are assessed before deciding whether retreatment or other care is needed. Retreatment is quoted after evaluation. Read more: root canal retreatment · Root canal retreatment: when a root canal fails.

Root canals under the microscope in San Miguel

At Endodontics El Salvador in San Miguel, El Salvador, every root canal is done with an endodontic microscope, digital periapical X-rays and a rotary motor with nickel-titanium files. Root canal $390, any tooth; evaluation with X-ray $35. If you have a toothache or suspect you need a root canal, send us a photo or your X-ray on WhatsApp.

Last updated: September 19, 2026.