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The Highest Rated

Root Canal Specialists

In Orange County

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Microscopic root canal treatment, performed by our specialists, uses a magnification of 25x to see details that are impossible to see with the naked eye. The use of a microscope with a trained root canal specialist can lead to finding roots that would otherwise go unseen and untreated. Microscopic root canal treatments have consistently resulted in a better outcome, there is a simple reason, it is very hard to clean an opening as small as 0.1mm without seeing it!

Dr. Mansouri using a microscope for root canal
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Dr. Fay Mansouri

Dr. Fay Mansouri

Always thirsting for knowledge, Dr. Mansouri keeps up-to-date with the latest advancements in dentistry, endodontics, radiology, and sterilization. She has always gone beyond what is expected to offer only the best to her patients.

Dr. Mansouri’s approach to your treatment always starts with patiently listening to you. Then, after a complete and thorough examination, she reviews and discusses the diagnosis and treatment options with you. She is honest with her patients and she will always give time to her patients to ask questions.



  • 20 Years of experience
  • Top 5% at Dental School
  • #1 Temple University Graduate
  • Top 3% National Dental Board Exam
  • The Louis Grossman Achievement Award
  • Board Eligible
  • Teaching Experience at UCLA & USC
  • Married and has 2 beautiful children
Dr. Jason Cho

Dr. Jason Cho

“Our goal at Irvine Endodontics is to give our patients a very comfortable and positive experience. I try to explain the procedure: what’s going on and what we are going to do, step by step. That eases their anxiety and stress. The best part of my job is when I see patients who come in extreme pain and very uncomfortable, walk out the door happy and relieved of pain.”

Using the most advanced technology, Dr. Cho has successfully performed a wide range of surgical and non-surgical Endodontic procedures. He is a gentle, compassionate and experienced clinician who is committed to improving the oral health of all his current and future patients.


  • UCLA Dental Graduate
  • AAE Student Award
  • Endodontics Certificate at U Penn.
  • Published in a variety of national journals
  • Bachelor’s of Arts Degree
  • Commemoration in Biophysics from
    John Hopkins University
  • Board Eligible
  • Married and has a 2 yr old son


Shelby is very passionate about the dental field, she has worked in orthodontics, general dentistry and now endodontics and loves it! She enjoys making patients smile and feel comfortable.

She loves being able to keep people happy and make sure they leave with a great experience in the office. Shelby enjoys spending time with her family, being outdoors and the occasional shopping. Shelby is very outgoing, always has a smile on and has a positive attitude.



  • 4 Years of experience
  •  Graduated MATC For Dental Assisting
  • Caring and Friendly
  • Specialized in treatment coordination


When you are in her care she will try to make you feel at ease and as comfortable as possible.

Her caring nature and happy personality seem to bring out the best in you also. Whether it is in the office or on the phone, she will try to make you the most important person.

Karren has years of experience working with specialists, insurances and patients like you.


  • 40 Years of Experience
  • RDA Obtained at Cerritos College
  • Married with 2 adult children
    and 4 grandchildren
  • 5-star approval from Scheduling Institute
  • Caring and friendly
  • Loves to make you smile


Monique is one of the main assistants in the office and is most likely the first person you will encounter when you see Dr. Mansouri or Dr. Cho.

Monique is a caring individual who is always positive and has great empathy for patients and their pain. She will do her best to calm your fears and make you feel comfortable.

In her free time, she likes to hang out with her family and friends and watch sports.




  • Dental Assistant Certificate at
    Concorde Career College
  • Graduated from Valley high school
  • General education done at
    Santa Ana College
  • Married with 1 beautiful daughter
  • Professional & caring


Amal was born in the south of Iran which she says is famous for having the most honest and socialized people in the country. She feels honored to have come from such a place having these attributes in her blood. One of her passions in life is to make people happy.

“Working in the front office has been my release. It has given me a chance to expand myself into the world that I enjoy and love it. The best part of every day is that work does not feel like work.”







  • Associates degree in psychology
  • Fluent in both English & Farsi
  • 10 years of Experience
  • 5-Star Phone handling approved
    from Scheduling institute
  • Friendly & professional

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We Help You Relax!

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Sleep Dentistry

We understand patients may feel nervous about having a root canal. We offer safe oral sedation to help reduce anxiety and make your experience more comfortable and relaxing during your treatment.

relaxing dental office

Relaxing Environment

Going to a dentist can be stressful. We do our best to make it relaxing. A Comfort Menu will be given at every appointment to offer a Blanket, Pillow and Music. We also offer a lavender Aromatherapy while in the chair.

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Effective Anesthesia

One of the most important specialties of our doctors is administrating effective anesthesia that leaves you pain-free during the procedure. Most of our patients are surprised how comfortable their root canal is.


Conscious Sedation

Another great way to help you relax through your treatment. Laughing gas is very safe, and its sedative properties wear off quickly. In fact, patients who use this can drive themselves home after treatment.

About Our Office

irvine-endo-drsIrvine Endodontics is a specialty office dedicated to root canal
treatments and root canal re-treatments. We also offer microsurgery of the root for teeth that have had failed or complicated root canal treatments.
Our goal is to make your time with us a very comfortable and positive experience, where you will be sure to leave with your tooth pain addressed.

Our state of the art dental equipment including, microscopes, digital x-rays and our special “comfort menu”, offers the most current treatment options and cutting-edge dental technology available for endodontists.

karen-root-canal-assistantAlmost all insurance plans cover root canal treatments. We see patients who have all covered by insurance plans as well as those who are not.  

Our staff would be glad to provide you with a complimentary benefits check on the day of your consultation appointment.


We understand some of our patients may need help with their treatment cost. While we offer multiple arrangements to address that issue.

One of them is a payment plan from a reputable healthcare payment plan called CareCredit.

Our arrangement with them allows the convenience of payment plan availability right here in our office.

  • No Interest payment plans available.

Call us today for more information.

We are located conveniently between the 5 freeway and the 405 freeway at the corner of Jamboree and Alton Parkway, inside the IBC Medical Plaza on the second floor. Parking is free and there are always spots open.

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Irvine Endodontics Promotion


Benefits will be discussed at the time of your appointment in person.

Can not be discussed via phone or email.

Root Canal Treatment

Endodontics is a specialty of dentistry recognized by the American Dental Association dealing with the treatment of the pulp and surrounding tissues of a tooth. When you look at your tooth in the mirror, what you see is the crown. The rest of the tooth, the portion hidden beneath the gum line, is the root.

The outer portion of the root is a hard tissue called dentin. The inside channel, or root canal, contains the pulp, a soft tissue consisting of blood vessels and nerves. Bacteria introduced into the pulp because of tooth decay, extensive tooth restorative history, periodontal disease, or a fracture can cause inflammation, pain and severe damage to the pulp.

Root canal therapy involves removing the inflamed and/or infected pulp tissue by a process of cleaning and shaping the root canal. Then an inert material is placed in the canal to seal the tooth and prevent reinfection. After root canal treatment is done your restorative dentist will usually place a crown on you tooth to protect it against fracture.

Root Canal Retreatment

When a root canal treatment fails, the first course of action that is usually taken is root canal re-treatment. The process is very similar to Root canal Treatment, the difference is that besides taking any remaining infected tissue out, the doctor has to take old filling material, any posts and crowns or any other obstacle in the pulp space out to be able to successfully disinfect and seal the area of the root canal.

After the root canal re-treatment  is done your restorative dentist will place a crown to protect the tooth against fractures.

Endodontic Microsurgery

An Apicoectomy is the most common endodontic surgical procedure used to save a tooth. This treatment is done when inflammation persists in the bony area around the end of your tooth after a root canal procedure. This infection is known as an abscess and will not go away without proper treatment.

This is a microsurgery that the doctor will perform under the microscope, remove any underlying bone and inflamed or infected tissue, We send the biopsy to be tested. This Endodontic Surgical procedure is a good way to save the tooth or crown, because no hole will be made through the crown of the tooth. A small filling is placed to seal the end of the root canal, and a few stitches are placed in the gum to help the tissue heal. Over a period of months the bone fills in the area at the end of the root.

After the treatment is done we will follow up with you in six months to make sure the bone has grown back properly.

Other Questions

Who performs endodontic treatment?

Root canal treatment is performed by an endodontic specialist. Some root canal treatments are more complex than others and your dentist believes your current needs require the services of an endodontic specialist. We consider our office as an adjunct of your dentist’s skill and concern for your well-being.

How long will treatment take?
Root Canal Treatment will take 1 to 2 appointments, depending on the complexity of the treatment and presence of infection, inflammation, or swelling. There are times when additional visits are necessary but this is rare. Treatment visits usually last one to two hours.

What happens after treatment?
When your root canal therapy has been completed, we will send a record of the treatment to your general dentist along with x-rays. You should contact their office for a follow-up appointment within a few weeks of completion of treatment at our office. Meanwhile, to prevent fracture, avoid eating on the treated tooth until it is restored. Your dentist will consult with you about what type of restoration is necessary to protect your tooth. Neglecting needed follow-up treatment could lead to failure of your root canal treatment and loss of your tooth.

What about infection control?
Our office adheres to the most rigorous standards of infection control advocated by OSHA (Occupational Safety and Health Administration), the US Centers for Disease Control and the American Dental Association. We utilize autoclave sterilization and barrier techniques to eliminate any risk of infection.

Do I still need root canal treatment if my tooth doesn’’t hurt?
Pain is only one indication for root canal treatment. Sometimes a diseased tooth can remain without pain due to the body’s immune system, leaving a patient unaware of what is happening inside the tooth. Your general dentist can often identify these situations and refer you to an endodontist for treatment before experiencing pain and swelling.

Getting Ready for Your Appointment

When you call our office, a friendly voice will be able to guide you through scheduling your  root canal appointment. With our flexible office hours, you will find it easy to make an appointment if you have an emergency. If you are experiencing a lot of pain, let our staff know. We will make sure we do everything possible to get you seeing a doctor as soon as possible.

When you come for your appointment here is a list of questions that we will ask for you to prepare before your visit:

  • Who is your dental insurance provider?
  • Who is the primary subscriber on you dental Insurance?
  • What is the primary subscriber’s date of birth?
  • What is the primary subscriber’s identification number?
  • Who is your general dentist?
  • What is your general dentist’s telephone number?
  • Do you have any medical conditions that require you to take an antibiotic prior to being treated by a dentist?

We accept most insurance plans. We also accept payment from most PPO and indemnity plans.

Emergency Root Canal Appointment

An emergency appointment can be made if you are in severe tooth pain and need to have treatment as soon as possible .  The doctor can perform a procedure which opens the tooth to remove the nerve, and will try to finish the root canal procedure if that is not possible, then packs the tooth with medication to kill the infection. There will be a temporary filling put in the tooth when the treatment is finished.  This procedure significantly reduces pain and starts the healing process.  If needed an appointment will be made for you to return to finish the root canal.

What is an Endodontist

If you are reading this page, it probably means that your General Dentist has referred you to see an Endodontist for consultation and/or treatment on one or more of your teeth. You may be thinking, “what is an Endodontist and why am I being referred?” An Endodontist is a dental specialist who deals with infections that occur inside the tooth.

All Endodontists complete two years of post doctorate education to become a specialist. That’s approximately 10 years of college. More than 14 million teeth recieve root canal treatment each year. Since Irvine Endodontics dedicates our practice solely to Endodontic treatment, we have successfully completed thousands of root canal treaments. Making treatment easier and faster for you as a patient.

There are several ways in which Endodontists save teeth that have infections or necrosis, but most common procedure is called a root canal treatment.  More than 14 million teeth receive some form of root canal treatment each year—you’re not alone. Moreover, you’re in great hands.

Post Operative Instructions

After Root Canal Treatment you will be able to go back to work, school, or to take care of your family. You will only be numb for a couple hours.

We wish to provide you with the utmost quality of care and extend every effort to satisfy you with every aspect of your treatment. If any problems should arise, please let us know how we can help. Here are the Post-Op instructions that will be given to you after your treatment.

1- For the first few days and up to 10 days following your Root Canal Treatment, you may feel some mild pain, soreness and sensitivity that can include throbbing and minor swelling while biting or chewing on your affected tooth. This can be especially pronounced if you had pain, swelling and/or infection prior to your treatment.

2- Take any medication that is prescribed for you according to instructions. (If antibiotics have been prescribed and you take birth control pills, consult with a pharmacist and/or physician.)

3- Continue brushing and flossing as normal, being careful on the treated tooth as the temporary filling could dislodge.

4- Usually a temporary filling has been placed on your tooth. DO not bite or chew with the tooth for one hour and while your are numb. Also, be very gentle with the tooth until the permanent restoration is placed. Try to chew on the opposite side. Do not eat anything sticky or chewy for the next few days. It is good to drink liquids right away. This will aid in hardening the temporary filling.

5- It is very important to contact your General Dentist office as soon as possible (within 15 days) following your root canal treatment for the final restoration. Any unnecessary delay on placement of the final restoration may damage the tooth permanently and/or allow the tooth to become re-infected.

6- Call our office if you are in severe pain or experience swelling or if you have any questions.

Your First Visit

Your first visit with our office is generally a consultation. Make sure to show up for your appointment 10 minutes early to fill out necessary paperwork. To help you fill out these forms properly, remember to bring your insurance card, subscriber information, and a referral from your general dentist. Bring a list of medications you are taking, and any allergies that you may have.

During your consultation we review the existing structure to create a personalized plan for you. Unfortunately, not all teeth can be saved by root canal treatment. If the root canals are not accessible, the root is severely fractured, or the tooth doesn’t have adequate bone support, then there is a possibility that the tooth cannot be restored.

Clinical testing will be done on the affected tooth to arrive at a diagnosis. This process starts with a digital x-ray of the tooth. The tooth is then tested for pain to bite, palpation, percussion, cold, and heat sensitivity. The doctor will assess the mobility of the tooth and the health of the surrounding gum tissue. It is highly important NOT TO TAKE PAIN KILLERS PRIOR TO YOUR APPOINTMENT. Taking pain killers will mask your symptoms, therefore making your clinical tests invalid.

Once a diagnosis is made by the doctor, a treatment plan will be presented to you by a professional treatment coordinator. A quote will be given to you explaining your insurance benefits and financial responsibilities. Then an appointment will be made for your root canal treatment.