How many visits does a root canal take?
Most root canal treatments take one or two visits. A front tooth with one canal and no active infection is often finished in one appointment; a molar with several canals, a tooth with an abscess, or a retreatment more often needs two or more, with a medicated dressing and temporary filling in between. A crown or permanent filling follows. At Creative Arts in Dubai, Dr. Marina Antoniuk and Dr. Julia carry out root canals with a dental microscope.
Who treats you here Dr. Marina Antoniuk Dentist · Dr. Julia General Dentist
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What has to be done during a root canal?
Whether it takes one visit or several, every root canal treatment goes through the same stages. After local anaesthetic, the tooth is isolated with a thin rubber sheet to keep it dry and clean. An opening is made through the top of the tooth to reach the pulp chamber, and each canal is located, measured and cleaned with fine instruments and disinfecting solutions. The canals are then shaped so they can be sealed, and finally filled with a rubber-like material and sealer. The opening is closed with a temporary or permanent filling.
The American Association of Endodontists describes root canal treatment as usually completed in one or two visits. The question of one or two is really about where to pause. In a one-visit treatment all of this happens in a single appointment. In a two-visit treatment, the canals are cleaned at the first visit, a medicated dressing is placed inside them and the tooth is sealed temporarily; the canals are filled at the second visit once the tooth has settled.
Some cases need more than two: very complex anatomy, a persistent infection that is slow to settle, or a retreatment of a tooth that has been root-filled before.
One visit or two: what decides it?
The dentist weighs these factors at the start and sometimes during treatment. Plans can change once the canals are seen.
| Factor | Favours one visit | Favours two or more visits |
|---|---|---|
| Type of tooth | Front teeth and many premolars with one or two canals | Molars with three, four or more canals |
| Infection | Inflamed nerve without an abscess | Abscess, swelling, or a canal that keeps draining |
| Canal anatomy | Straight, open canals | Narrow, curved, calcified or extra canals |
| Previous treatment | A tooth never root-treated before | Retreatment: old filling material and posts must be removed first |
| Bleeding or fluid in the canals | Canals can be dried completely | Persistent bleeding or fluid that prevents a good seal |
| Your comfort | You are comfortable for a longer appointment | Difficulty keeping the mouth open, jaw problems or anxiety |
| Uncertain prognosis | Clear diagnosis | A suspected crack that needs checking before committing to a crown |
Is a one-visit root canal as good as two visits?
For suitable teeth, the evidence suggests that the number of visits makes little difference to whether the treatment works. A 2022 Cochrane review comparing single-visit and multiple-visit root canal treatment found no clear difference in success on X-ray at one year. It found that people treated in a single visit were somewhat more likely to report pain in the first week, while differences in flare-ups and painkiller use were unclear.
That is why the decision is made tooth by tooth. A single visit saves an appointment and avoids the risk of a temporary filling leaking between visits. Two visits allow a medicated dressing to work inside the canals, which can help when there is an established infection, and give the tooth time to settle before it is sealed. Neither is automatically better, and a good dentist will explain why they are suggesting one or the other for your tooth.
At Creative Arts, Dr. Marina Antoniuk and Dr. Julia carry out root canal treatment using a dental microscope, which helps them find and clean small or extra canals. You can read more about that on our page on microscope root canal treatment.
How many visits to expect, by situation
Typical plans. Your dentist will confirm yours after the examination and X-ray.
| Situation | Root canal visits | Then |
|---|---|---|
| Front tooth, inflamed nerve, no abscess | Usually one | A permanent filling, or a crown if the tooth is weak or discoloured |
| Premolar | One or two | Often a crown, especially if much tooth structure is missing |
| Molar | One or two, more often two | A crown is usually recommended to protect the tooth |
| Tooth with an abscess or swelling | Two or more | Restoration once the infection has settled |
| Retreatment of an old root canal | Usually two or more | A new crown or filling, depending on the existing one |
How long does each root canal appointment take?
Appointment length depends on the same factors as the number of visits. A straightforward front tooth may take around an hour; a molar with several narrow canals can take an hour and a half or more, which is one reason it is sometimes split. A second visit that only fills canals already cleaned is usually shorter than the first.
A few things make longer appointments easier:
- Eat beforehand, because you will be numb for a few hours afterwards.
- Ask for breaks. A small bite block can rest the jaw, and you can agree a hand signal to pause.
- Mention jaw problems, such as clicking or limited opening, so the plan can allow for shorter sessions.
- Tell the dentist if you are anxious. Our guide for people who are afraid of dental injections explains what can help.
The rubber sheet placed around the tooth during treatment keeps it clean and dry and also stops small instruments and solutions reaching your throat, so most people find it more comfortable than they expect.
What happens between root canal visits?
Between visits the tooth has a medicated dressing inside the canals, commonly a calcium hydroxide paste, and a temporary filling on top. The gap between appointments is commonly a week or two, sometimes longer when an infection needs time to settle.
- The tooth may be tender to bite on for a few days; over-the-counter pain relief taken as directed usually helps.
- Chew on the other side and avoid hard or sticky food on the tooth; the temporary filling is not designed for full chewing forces.
- Brush normally, including around the tooth.
- If the temporary filling breaks or falls out, contact the clinic so it can be replaced; an open tooth lets bacteria back into the canals.
- Keep the second appointment. Leaving a tooth in a temporary state for months risks reinfection and fracture.
If pain increases sharply or swelling develops between visits, contact the clinic during opening hours, 10:00 to 20:00 daily. Our guide to pain after a root canal explains what is normal.
Told you need a root canal? See how microscope root canal treatment is planned at Creative Arts in Dubai, with a written plan before treatment starts.
Root canal treatmentHow many visits including the crown?
The root canal itself is only part of the treatment. Back teeth that have had a root canal are usually weakened by the original decay and the access opening, and a crown is commonly recommended to protect them from fracture. Front teeth with little missing structure may only need a permanent filling. Our guide to a crown after a root canal explains when each is appropriate.
A crown usually takes two further visits. At the first, the tooth is prepared, scanned and a temporary crown fitted. The crown is then made by Creative Art Dental Lab, which is in the same building as the clinic, typically in three to five working days depending on complexity. At the second visit it is checked and cemented. Crowns are not made on the same day as the preparation.
So a typical sequence for a molar might be two root canal visits followed by two crown visits, while a front tooth might need just one root canal visit and a filling. Sometimes the first crown visit can be combined with the final root canal appointment. Read more about dental crowns at Creative Arts.