What Is Endodontics—and When Do You Need an Endodontist?
Endodontics treats the inside of teeth. Learn how it differs from general dentistry, what treatment involves, and what to ask before agreeing.

Endodontics is the branch of dentistry concerned with the inside of the tooth, especially the dental pulp, and problems affecting the tissues around its roots. The pulp is soft tissue containing nerves, blood vessels and connective tissue beneath the tooth’s hard outer layers. Root canal treatment is one type of endodontic care—not another name for the entire field. Its aim is to treat disease while preserving a tooth that can still be restored. American Association of Endodontists (AAE)
An endodontist is the dentist who specializes in this work. A referral may be for a closer assessment or specialized care; it does not, by itself, establish which treatment you need.
What does endodontic care include?
Endodontic care involves diagnosing tooth pain and assessing damage to the pulp. Deep decay, cracks, repeated procedures or a dental injury can cause pulp inflammation or infection—even when an injured tooth has no visible chip. AAE treatment explanation
Treatment may include:
- Root canal treatment: removing inflamed or infected pulp, cleaning and shaping the canals inside the roots, then filling and sealing them.
- Root canal retreatment: reopening a previously treated tooth to investigate problems such as additional canals or new infection, then cleaning and sealing it again.
- Endodontic surgery: treating problems that cannot be adequately addressed through the canals alone. One example is an apicoectomy, or root-end surgery, for persistent inflammation or infection around the root tip after root canal treatment. AAE treatment options
General dentist or endodontist?
General dentists are trained to perform root canals. You do not automatically need a specialist for every root canal. AAE guidance on who performs root canals In the United States, endodontists complete at least two additional years of specialist education after dental school, concentrating on pulp diseases, tooth-pain diagnosis and related treatment. AAE provider comparison
Specialist assessment is worth discussing when the diagnosis is unclear, treatment is complex, or a tooth with a previous root canal has developed problems. Ask your dentist: “What makes this case suitable for treatment here—or for referral?”
The endodontist’s role also differs from the dentist’s restorative role. After specialist root canal care, you generally return to your regular dentist for a crown or another permanent restoration that protects the tooth and restores function. A completed root canal is not necessarily a completed tooth repair. AAE treatment steps
What happens at the appointment?
Expect a review of your symptoms and medical history, an examination of the affected and neighboring teeth, X-rays and any necessary tests. The clinician should then explain the options, risks and benefits. Treatment may be scheduled separately or start that day, depending on the problem. Bring a medication list and any referral information. AAE office-visit guide
For a root canal, local anesthetic numbs the area, and a protective sheet called a dental dam isolates the tooth from saliva. The clinician then removes the affected pulp and cleans, fills and seals the canals. The AAE reports that most patients are comfortable during treatment with modern anesthetics, although temporary sensitivity afterward can occur. AAE procedure and comfort guidance
What to ask before agreeing
A useful consultation should answer:
- “What is the diagnosis, and which findings support it?”
- “Can this tooth be reliably restored after treatment?”
- “What are the alternatives, and how soon do I need care?”
- “Who will place the final restoration, and when?”
- “Does the written estimate include the examination, imaging, root canal, any tooth buildup, final restoration and follow-up?”
Fees depend on the tooth and case complexity, among other factors. Compare the complete treatment plan, not just the root canal fee, and confirm the estimated insurance payment and your share with the office and insurer. AAE cost guidance
Not every tooth can be saved: severe root fractures, inadequate bone support or an inability to restore the tooth can rule out treatment. AAE guidance on treatable teeth If extraction is being considered, our guide to back-molar root canal versus extraction explains the restorability questions to raise.
When not to wait
Persistent tooth pain, lingering hot or cold sensitivity, or gum swelling warrants a dental assessment—not self-diagnosis from a symptom list. Seek urgent dental care for a suspected abscess, especially with facial swelling or fever. Difficulty breathing, speaking or swallowing; major mouth swelling; difficulty opening your mouth; or a swollen or painful eye or new vision problems needs emergency medical care. AAE symptom guidance · NHS dental-abscess guidance