What Does an Endodontist Treat?
An endodontist diagnoses and treats conditions that affect the inside of the tooth. The dental pulp, a soft tissue containing nerves and blood vessels, sits in a chamber at the center of each tooth and extends down through the root canals. When this tissue becomes infected, inflamed, or damaged, an endodontist is the specialist trained to save the tooth.
The most common reason patients see an endodontist is for root canal treatment. During a root canal, the endodontist removes the infected or damaged pulp, cleans and shapes the inside of the tooth, and seals it to prevent future infection. The tooth is then restored with a crown or filling by your general dentist or a prosthodontist.
Common Endodontic Procedures
Root canal treatment is the procedure most people associate with endodontists, but these specialists perform several other procedures as well.
- Root canal treatment (endodontic therapy): Removing infected pulp tissue, cleaning the canal system, and sealing the tooth. This is the most frequently performed endodontic procedure.
- Endodontic retreatment: When a previous root canal has not healed or has become reinfected, the endodontist reopens the tooth, removes the old filling material, re-cleans the canals, and reseals them.
- Apicoectomy (root-end surgery): A surgical procedure where the endodontist removes the tip of the tooth root and a small amount of surrounding tissue. This is typically done when a standard root canal or retreatment cannot resolve an infection.
- Treatment of cracked teeth: Endodontists are trained to diagnose cracks that may not be visible on X-rays and to determine whether the tooth can be saved.
- Treatment of dental trauma: Teeth that have been knocked out, pushed into the jawbone, or fractured in an accident often need endodontic treatment to preserve the tooth.
Conditions an Endodontist Diagnoses
Tooth pain is not always straightforward. Pain can radiate from one tooth to another, and symptoms of pulp damage can mimic other conditions. Endodontists are trained to pinpoint the source of pain and determine whether the problem is coming from the pulp, the root, the surrounding bone, or something else entirely.
- Irreversible pulpitis: Inflammation of the dental pulp that will not resolve on its own and requires root canal treatment.
- Pulp necrosis: Death of the pulp tissue, which can lead to infection and abscess formation if not treated.
- Periapical abscess: An infection at the tip of the tooth root, often caused by untreated pulp disease.
- Internal or external root resorption: A condition where the tooth structure breaks down from the inside or outside of the root.
- Referred pain: Tooth pain that seems to come from one area but originates in a different tooth or structure.
Endodontist Training: What Sets Them Apart
Every endodontist is a dentist first. After completing four years of dental school and earning a DDS or DMD degree, an endodontist completes an additional 2 to 3 years of full-time residency training accredited by the Commission on Dental Accreditation (CODA). This residency focuses exclusively on the biology and treatment of the dental pulp and the tissues surrounding the roots of teeth.
During residency, endodontists treat hundreds of complex cases under the supervision of experienced faculty. They receive advanced training in pain management, dental anesthesia, surgical techniques, and the use of operating microscopes and 3D imaging technology. This depth of focused training is what distinguishes an endodontist from a general dentist who also performs root canals.
Many endodontists also pursue board certification through the American Board of Endodontics (ABE). Board-certified endodontists have passed rigorous written and oral examinations and demonstrated a commitment to continuing education. While board certification is not required to practice, it indicates an additional level of expertise.
Technology Endodontists Use
One of the practical differences between having a root canal at a general dental office versus an endodontic practice is the technology available. Endodontists invest in specialized equipment designed for working inside teeth.
Dental Operating Microscope
Endodontists use high-powered surgical microscopes that magnify the inside of the tooth up to 25 times. This makes it possible to see tiny canal openings, cracks, and anatomy that are invisible to the naked eye. Most general dental offices do not have this equipment.
Cone-Beam Computed Tomography (CBCT)
CBCT provides a three-dimensional X-ray of the tooth and surrounding bone. Standard dental X-rays show a flat, two-dimensional image that can miss problems hidden behind other structures. CBCT reveals the exact number, shape, and curvature of root canals, fractures, and infections that standard X-rays cannot detect.
Electronic Apex Locators and Rotary Instruments
Electronic apex locators measure the length of the root canal electronically, reducing the need for multiple X-rays during the procedure. Rotary nickel-titanium instruments clean and shape the canals more efficiently and predictably than hand files alone. These tools help endodontists complete root canals faster while maintaining precision.
When to See an Endodontist vs. a General Dentist
General dentists perform root canals regularly, and for straightforward cases, a general dentist is often a perfectly good choice. However, certain situations benefit from the specialized training and equipment that an endodontist provides.
See an Endodontist When
- You need a retreatment (a previous root canal that has failed or become reinfected)
- The tooth has complex anatomy, such as extra canals, curved roots, or calcified canals
- You have been told the tooth may not be savable and want a second opinion
- You are experiencing severe or persistent tooth pain that your dentist cannot explain
- You have a cracked tooth and need an expert evaluation to determine if it can be saved
- The procedure involves a front tooth where precision is critical for long-term aesthetics
- You have dental anxiety and want a specialist who performs these procedures daily
A General Dentist May Be Fine When
- The root canal is on a single-rooted tooth with straightforward anatomy (such as a front tooth or premolar)
- This is a first-time root canal, not a retreatment
- Your dentist performs root canals regularly and has experience with your type of case
- There are no complicating factors like unusual anatomy, prior trauma, or failed previous treatment
What to Expect at an Endodontist Appointment
If you are referred to an endodontist or schedule an appointment on your own, here is what typically happens. Most endodontists can see you quickly, often within a day or two, because their practice is focused entirely on these procedures.
At your first visit, the endodontist will review your symptoms and dental history, take X-rays (usually including CBCT), and perform diagnostic tests to identify the source of your pain. These tests may include applying cold, heat, or a small electrical stimulus to individual teeth to see which one responds abnormally.
If a root canal is needed and you are ready to proceed, many endodontists can begin treatment at the same appointment. A straightforward root canal on a front tooth or premolar typically takes 30 to 60 minutes. A molar with multiple canals may take 60 to 90 minutes. You will be numb throughout and should not feel pain during the procedure.
After the root canal, the endodontist places a temporary filling. You will then return to your general dentist or a prosthodontist for a permanent crown or restoration, usually within 2 to 4 weeks.
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