Information reviewed by: Dr Tay Chih Kien, B.D.S (Singapore) | Last updated: Mar 07, 2026 Last updated: Mar 07, 2026
AI illustration of a root canal treatment cleanup procedure.

Root canal treatment is a procedure designed to save a damaged or infected tooth while relieving pain and preserving your oral health. At True Dental Studio, root canal treatment is carried out with a focus on careful technique and patient comfort.

Below, we answer some of the most frequently asked questions about root canal treatment.

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Is root canal a painful procedure?

Modern root canal procedures are performed with local anaesthesia, making the process relatively painless. Patients may experience mild discomfort during the recovery period.

At True Dental Studio, we strive to minimise any discomfort and make the procedure as comfortable as possible.

How long does a root canal last?

A well-cared-for tooth after a root canal can last a lifetime. However, the crown or filling placed on it might require replacement after 5-15 years depending on wear and care.

What are the 3 stages of root canal treatment?

The 3 stages of root canal treatment are:

  1. Cleaning: The dentist removes everything inside the infected tooth's root canal, involving the pulp, nerve tissue, and any bacteria.
  2. Filling: After cleaning and disinfecting, the dentist fills the hollow area with a material called gutta-percha, sealing off the root canal.
  3. Restoration: Lastly, a crown or filling is placed on the tooth to protect it, restore its function, and improve its appearance.

What are the signs that a root canal is needed?

Lady touching her left cheek and feeling toothache in that area.
3D illustration of a cross section of a tooth with a dental mirror tool beside it.
Lady touching her left cheek and feeling toothache in that area.

Indicators that you might require a root canal:

  1. Persistent tooth pain, especially when chewing.
  2. Sensitivity to hot or cold temperatures.
  3. Swollen or tender gums near the affected tooth.
  4. Discolouration or darkening of the tooth.

Is it better to pull a tooth or do a root canal?

This depends on numerous factors like the tooth's condition, your overall health, and personal preference; however, preserving natural teeth through a root canal is usually the first choice over extraction.

Can I eat after a root canal?

After your root canal procedure, the anaesthesia may take 1-2 hours to dissipate. During this time, it is best to avoid hot foods to prevent unintended burns.

Once the numbing subsides, you are welcome to eat. However, try not to put pressure on the treated tooth, as it may be temporarily more fragile and sensitive. It is advisable to wait until the permanent filling or crown is in place before resuming regular eating habits using that tooth.

Can I get a filling instead of a root canal?

In some cases, a filling can be an option instead of a root canal. Fillings are used to repair minor cavities, while root canals are needed when the dental pulp is infected or damaged.

A dental consultation can help to determine the most suitable treatment for your specific needs.

Why do root canals take 2 visits?

At True Dental Studio, we prioritise the well-being and comfort of our patients.

Typically, our root canal treatment necessitates up to three visits to ensure comprehensive cleaning. This phased approach not only allows us to be meticulous but also provides an opportunity for patients to monitor their condition between visits. It has been our observation that this method reduces the likelihood of future complications.

Once the cleaning stage is effectively addressed and the patient's condition is stabilised, we then proceed with the crowning process, which itself might take two visits. While it might seem extensive to some, the feedback we've received from our valued patients is that distributing the treatment over several visits makes the experience much more manageable and less daunting.

Do I need a crown after a root canal?

After a root canal, it is common to need a crown. A crown helps protect and restore the tooth's strength and appearance.

What is the most painful part of a root canal?

The most painful part of a root canal is usually the period before the procedure when the tooth is infected or inflamed. During the actual root canal, local anaesthesia is used to numb the area, ensuring minimal discomfort.

Why is root canal so expensive?

Root canal treatment may seem expensive because it involves skilled dental expertise, specialised equipment, and multiple visits. However, it saves your natural tooth and prevents further complications. You can avoid costly tooth replacements if your tooth is saved.

Is a root canal a major operation?

A root canal is a common dental procedure, not a major operation. It involves removing infected or damaged pulp from the tooth to relieve pain and save the natural tooth.

At True Dental Studio, we strive to make root canal treatment as pain-free and comfortable as possible.

Why do I suddenly need a root canal?

A sudden need for a root canal may arise due to deep tooth decay, a cracked or fractured tooth, or an infection that has reached the tooth's pulp. Prompt treatment is essential to save the tooth and alleviate pain.

What happens if you don't get a root canal?

The infection can spread from the infected tooth, causing severe pain, abscess formation and potential tooth loss. Seeking timely treatment is crucial to save the tooth and to prevent further complications.