Root Canal Therapy

Root canal therapy is needed when the nerve of a tooth is affected by decay or infection.  In order to save the tooth, the pulp (the living tissue inside the tooth), nerves, bacteria, and any decay are removed and the resulting space is filled with special, medicated, dental materials, which restore the tooth to its full function.

Having a root canal done on a tooth is the treatment of choice to save a tooth that otherwise would die and have to be removed.  Many patients believe that removing a tooth that has problems is the solution, but what is not realized is that extracting (pulling) a tooth will ultimately be more costly and cause significant problems for adjacent teeth.

Root canal treatment is highly successful and usually lasts a lifetime, although on occasion, a tooth will have to be retreated due to new infections.

Signs and symptoms for possible root canal therapy:

  • An abscess (or pimple) on the gums.
  • Sensitivity to hot and cold.
  • Severe toothache pain.
  • Sometimes no symptoms are present.
  • Swelling and/or tenderness.

Reasons for root canal therapy:

  • Decay has reached the tooth pulp (the living tissue inside the tooth).
  • Infection or abscess have developed inside the tooth or at the root tip.
  • Injury or trauma to the tooth.

What does root canal therapy involve?

A root canal procedure requires one or more appointments and can be performed by a dentist or endodontist (a root canal specialist).

While the tooth is numb, a rubber dam (a sheet of rubber) will be placed around the tooth to keep it dry and free of saliva.  An access opening is made on top of the tooth and a series of root canal files are placed into the opening, one at a time, removing the pulp, nerve tissue, and bacteria.  If tooth decay is present, it will also be removed with special dental instruments.

Once the tooth is thoroughly cleaned, it will be sealed with either a permanent filling or, if additional appointments are needed, a temporary filling will be placed.

At the next appointment, usually a week later, the roots and the inside cavity of the tooth will be filled and sealed with special dental materials.  A filling will be placed to cover the opening on top of the tooth.  In addition, all teeth that have root canal treatment should have a crown (cap) placed.  This will protect the tooth and prevent it from breaking, and restore it to its full function.

After treatment, your tooth may still be sensitive, but this will subside as the inflammation diminishes and the tooth has healed.

You will be given care instructions after each appointment.  Good oral hygiene practices and regular dental visits will aid in the life of your root canal treatment.

Testimonials.

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Testimonials

Dr. Leong is an amazing dental professional. I've been seeing her for a number of years and she has always been effective, responsive, personable and caring. She managed my Invisalign process and did a great job from start to finish. She's very gentle so pain is never in the equation during my visits with her. She's also just a wonderful person. I consider her both my dentist and my friend. I would recommend her to anyone who's looking for a skilled dental professional.

Linda S. June 10, '17

I have been consistently happy with how Dr. Leong and her staff have cared for my teeth. AND, I've had A Lot of Work for Dr. Leong to do with my teeth! Shortly after my first cleanings, I had cavities to fill, then a molar cracked and I had to get a crown, which Dr. Leong did really well (better than my last dentist for sure!)... Given these positive experiences, I trusted Dr Leong to create Veneers for 8 of my upper front teeth, to totally transform my smile! I am very happy with my smile, get lots of compliments, and have confidence that the work will last me a long time (probably longer than my teeth would on their own... She not only did expert work to prepare my veneers and my teeth, but she also went above and beyond to make sure everything fit and felt right for me.

Matt Apr. 9, '15

Dr. Leong is hands down the best dentist I've ever had. She is extremely friendly and knowledgeable. She educated me about the right way to take care of my teeth without being pushy or judgmental. She explained everything she was doing very thoroughly so that I understood my own health better. She never made me feel rushed and she was never pushy trying to sell me dental work I didn't need, which has happened to me many times with other dentists. She and her staff were top notch.

My appointment was exactly on time and Anna at the front desk had already gotten my insurance information without me having to fill out anything. Everything was very well organized and we started my exam right away.

S. Wang Jan. 06, 15

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Wanda S. Leong, DDS 291 Geary Street, Suite 300 San Francisco, CA. 94102 Phone: 415-433-6825
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