How Long Does a Root Canal Take? Full Timeline Explained

How Long Does a Root Canal Take? The Real Answer

Most root canals take 60 to 90 minutes per appointment. However, that single number hides the real story. In fact, the total time depends on which tooth is involved, how many canals it has, and whether infection has already set in.

For example, a simple front tooth with one canal can sometimes be done in 45 minutes. On the other hand, a back molar with four twisting canals can take closer to 90 minutes, and often needs a second visit.

Here’s the part most patients don’t expect: the treatment itself isn’t the slow part. Instead, getting numb, taking X-rays, and confirming the tooth is ready adds time before any drilling starts. Because of that, rushing this stage isn’t possible, and it shouldn’t be.

How Long Is a Root Canal by Tooth Type?

Canal count is the single biggest factor in appointment length. After all, more canals mean more cleaning, shaping, and filling — and therefore more time in the chair.

Diagram comparing a front incisor (1 canal) beside a molar (4 canals), with approximate treatment times.

What Happens Minute-by-Minute During the Procedure

Knowing the steps helps explain why the clock adds up the way it does.

Minutes 0–10: Numbing

Your dentist applies local anesthetic and waits for it to take full effect. This step isn’t skipped, even for a “quick” tooth — comfort comes first.

Minutes 10–20: Access and Isolation

A small opening is made in the top of the tooth. A rubber dam isolates the tooth, keeping it dry and free of saliva during treatment.

Minutes 20–60: Cleaning and Shaping

This is the longest stage. Your dentist removes infected or inflamed pulp tissue from each canal, then cleans and shapes the canal walls. Every additional canal adds roughly 10–15 minutes.

Minutes 60–80: Filling and Sealing

Once canals are clean, they’re filled with a biocompatible material called gutta-percha and sealed to prevent bacteria from re-entering.

Minutes 80–90: Temporary Filling

A temporary filling closes the access hole until your permanent crown is ready.

One Visit vs. Two Visits: How Long Does Each Take?

Not every root canal finishes in one sitting. So, what tips the decision? Here’s how it usually plays out.

One Visit Is Likely When:

• The tooth has one or two straightforward canals
• Infection is minimal or absent
• The canals are easy to access and shape

Two Visits Are Likely When:

• The tooth is a molar with three or four canals
• There’s significant infection or an abscess present
• Canals are unusually curved or narrow
• Your dentist wants to place medication inside the tooth to calm infection before sealing it

If a second visit is needed, it’s usually scheduled 1–2 weeks later. In the meantime, a temporary filling protects the tooth. According to the Canadian Dental Association, root canal treatment has a success rate above 95% when completed as planned, regardless of whether it takes one visit or two.

7 Factors That Affect How Long a Root Canal Takes

1. Number of Canals

More canals mean more cleaning and shaping time. This is the biggest single variable.

2. Curved or Calcified Canals

Canals that curve sharply, or have narrowed with age, take extra care and time to navigate safely.

3. Active Infection or Abscess

Significant infection may require extra disinfection steps, or a two-visit approach to let medication work.

4. Re-Treatment Cases

Removing old root canal material before starting fresh treatment adds meaningful time compared to a first-time procedure.

5. Limited Mouth Opening

Reaching a back molar comfortably takes longer if jaw opening is restricted.

6. Anxiety or Difficulty Getting Numb

Some patients need extra anesthetic or a short pause partway through — both add time, and both are normal.

7. Tooth Fracture Risk

A cracked or structurally weak tooth needs a more careful, deliberate approach to avoid further damage.

Total Treatment Timeline: How Long a Root Canal Plus Crown Takes

The root canal procedure itself is only part of the picture. Beyond that, most molars and premolars need a crown afterward to protect the tooth long-term.

• Day 1: Root canal appointment (60–90 minutes)
• Day 1–14: Second root canal visit, if needed
• Week 2–4: Crown preparation appointment (60–90 minutes)
• Week 3–5: Final crown placement (30–45 minutes)

All told, most patients complete the full process — root canal plus crown — within 2 to 5 weeks, depending on scheduling and healing.

Root Canal Time vs. Extraction Time

Patients sometimes ask whether pulling the tooth is the faster option. So, here’s how the two actually compare.

Extraction is faster in the chair. Even so, replacing a missing tooth with an implant or bridge afterward often takes longer overall than a root canal, and costs more. For that reason, saving the natural tooth is usually the better long-term option when possible.

Recovery: How Long Until You Feel Normal Again

Numbness wears off in 2–4 hours. After that, most patients return to normal eating and talking the same day, though it’s best to avoid the treated side until sensation fully returns.

Mild soreness at the treatment site is common for 2–3 days and generally responds well to over-the-counter pain relief. Still, chewing on that tooth should wait until your permanent crown is placed.

Recovery timeline: procedure day, mild soreness days 2–3, crown placement weeks 2–4.

When to See a Dentist

Book Soon If:

• You have lingering tooth pain lasting more than a few days
• A tooth is sensitive to hot or cold well after the trigger is removed
• You notice swelling near a specific tooth

Seek Care Today If:

• You have throbbing pain that wakes you at night
• Your face or jaw is visibly swollen
• You have a fever alongside tooth pain

Apple Tree Dental offers root canal treatment and emergency dental care at both our London, Ontario locations. All our dentists are licensed through the Royal College of Dental Surgeons of Ontario.

Frequently Asked Questions

Timing Questions

How long does a root canal take on a front tooth?

Because front teeth usually have just one canal, treatment often finishes in 45–60 minutes in a single visit.

How long does root canal treatment take for a molar?

Molars have three to four canals, so treatment typically takes 75–90 minutes. As a result, many molar cases need a second visit before the crown stage.

Is a root canal done in one day?

Often, yes — for example, many front teeth and simple cases finish in a single appointment. However, molars or infected teeth may need a second visit 1–2 weeks later.

How long is a root canal procedure with a crown included?

Once you include the crown, most patients complete treatment within 2 to 5 weeks: first the root canal itself, then a crown preparation visit, and finally the crown placement about a week later.

Procedure and Recovery Questions

Why do some root canals need two appointments?

Molars with multiple canals, teeth with active infection, or curved canals often need extra time. For that reason, your dentist may also place medication inside the tooth and let it settle for a week before sealing it.

Does a longer root canal mean something went wrong?

No, not usually. In fact, longer appointments are typically due to more canals, curved canal shapes, or extra infection, rather than complications. Even so, your dentist will explain the reason if your case takes longer than average.

Is root canal treatment faster than getting a tooth pulled?

Extraction itself is quicker in the chair, usually 20–40 minutes. That said, a root canal preserves your natural tooth, while extraction often leads to a longer overall process if you replace the tooth with an implant or bridge.

How soon can I eat after a root canal?

First, wait until numbness fully wears off, usually 2–4 hours, to avoid biting your cheek or tongue. After that, simply avoid chewing on the treated tooth until your permanent crown is placed.

Last updated: August 10, 2026