How Long Does a Root Canal Take?

Quick Answer

30–90 minutes per appointment is the typical range for a root canal procedure. Front teeth with a single canal take 30–60 minutes, while molars with 3–4 canals require 60–90 minutes. Most root canals are completed in a single visit, though complex cases may need a second appointment 1–2 weeks later.

Time by Tooth Type

Tooth	Number of Canals	Procedure Time	Visits
Front teeth (incisors)	1	30–45 minutes	1
Canines	1	30–45 minutes	1
Premolars	1–2	45–60 minutes	1
Upper molars	3–4	60–90 minutes	1–2
Lower molars	3–4	60–90 minutes	1–2
Retreatment (any tooth)	Varies	60–90+ minutes	1–2

Procedure Step-by-Step Timeline

Step	Time	What Happens
Anesthesia	5–10 min	Local anesthetic numbs the area; takes a few minutes to take full effect
Dental dam placement	2–3 min	Rubber sheet isolates the tooth to keep it dry and clean
Access opening	5–10 min	Dentist drills through the crown to reach the pulp chamber
Pulp removal and canal shaping	15–40 min	Infected pulp is removed; canals are cleaned, shaped, and irrigated
Filling the canals	5–10 min	Canals are filled with gutta-percha (rubber-like material) and sealed
Temporary or permanent filling	5–10 min	Access hole is sealed; temporary filling placed if a crown is needed

Recovery Timeline

Timeframe	What to Expect
First 24–48 hours	Mild soreness and tenderness when chewing; manageable with OTC pain relievers
Day 3–5	Most discomfort subsides
1 week	Tooth feels mostly normal; avoid chewing hard foods on that side
2–4 weeks	Crown placement appointment (if needed)
1–2 months	Full recovery; permanent crown is in place and functional

Crown Placement After Root Canal

Most teeth that receive root canals – especially molars and premolars – need a dental crown afterward. The treated tooth becomes more brittle without its living pulp, and a crown provides structural protection. Crown placement typically adds:

• 1–2 weeks for a lab-fabricated crown (two appointments: prep and placement)
• Same day for a CEREC or CAD/CAM crown (single appointment, about 2 hours total)

Front teeth that still have significant structure may only need a filling rather than a full crown.

Factors That Affect Procedure Time

• Number of canals: More canals means more time for cleaning and filling.
• Canal anatomy: Curved, narrow, or calcified canals are harder to navigate.
• Infection severity: Significant infection may require a calcium hydroxide dressing and a second visit.
• Retreatment: Redoing a failed root canal takes longer due to removing old filling material.
• Specialist vs. general dentist: Endodontists use specialized equipment (microscopes, rotary instruments) that can speed up complex cases.

Pain Management

• During the procedure: Local anesthesia makes the procedure painless. Tell your dentist immediately if you feel sharp pain.
• After the procedure: Ibuprofen (400–600 mg) or acetaminophen (500–1,000 mg) every 6–8 hours as needed.
• Prescription pain relief: Rarely needed; your dentist may prescribe something stronger for complex cases.
• Antibiotics: Only prescribed if there is active infection spreading beyond the tooth.

When to Call Your Dentist

• Pain that worsens after 3 days instead of improving
• Swelling that develops or increases after the procedure
• Temporary filling falls out or feels uneven
• Allergic reaction to medication (rash, difficulty breathing)
• Bite feels significantly off after the numbness wears off