
In pain right now? Our Board-Certified Endodontists are specially trained to treat root canals and emergency toothaches — with same-day treatment available to get you out of pain fast.
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Board Certified
Endodontists are dental specialists who complete 2–3 years of additional training beyond dental school, focusing exclusively on treating tooth pain and performing root canals. They are the experts you want when you're in pain.
Our endodontists are board-certified by the American Board of Endodontics — a distinction held by a small percentage of endodontists nationwide.
2–3 years of advanced training beyond dental school focused exclusively on root canals and treating tooth pain. They perform dozens of root canals every week.
Using advanced surgical microscopes, our endodontists can see the intricate anatomy of your tooth in extraordinary detail for more accurate treatment.
We understand dental emergencies can't wait. Our team offers same-day appointments so you can get out of pain as quickly as possible.
If you're experiencing any of these symptoms, you may need an emergency root canal. Don't wait — delaying treatment can lead to more serious complications.
Intense, throbbing pain that doesn't go away with over-the-counter medication. Pain may worsen when lying down or biting.
Lingering sensitivity to hot or cold foods and drinks that persists long after the stimulus is removed — a key sign of nerve damage.
Swelling, redness, or tenderness around a specific tooth. You may also notice a small bump (abscess) on the gum near the affected tooth.
A tooth that has turned grey or dark compared to surrounding teeth, indicating the nerve inside may be dying or dead.
A visible crack, chip, or fracture in a tooth — especially if accompanied by pain. Bacteria can enter through the crack and infect the pulp.
Sharp pain or discomfort when biting down or chewing food, which may indicate an infection or crack in the tooth's root.
Same-day appointments available · Mon–Fri: 8:00am – 5:00pm
Our board-certified endodontists can diagnose and treat your emergency in a single visit. Here's what to expect:
Call us and we'll get you in as soon as possible — often the same day. Your endodontist performs a thorough exam using digital X-rays and our high-resolution CBCT scanner to pinpoint the exact source of your pain.
Before any treatment begins, we ensure you're completely comfortable. Your mouth is fully numbed with local anesthesia, and we offer sedation options for patients with dental anxiety. You won't feel a thing.
Using microscopic visualization, your endodontist precisely removes the infected or damaged pulp, cleans and disinfects the canals, and fills them with biocompatible material. The tooth is then sealed to prevent reinfection.
A temporary or permanent restoration is placed to protect your tooth. You'll receive detailed aftercare instructions and, if needed, a prescription for any post-procedure comfort. Most patients return to normal activities the next day.

Modern root canals are nothing like the outdated procedures you may have heard about. With today's technology, they're no more uncomfortable than getting a filling.
We offer multiple sedation options — from nitrous oxide to oral sedation — so you can relax completely during your procedure. Your comfort is our priority.
Our high-resolution cone beam CT scanner creates detailed 3D images of your tooth anatomy, allowing precise diagnosis and treatment planning — no guesswork involved.
Our endodontists use advanced surgical microscopes with up to 25x magnification, revealing the intricate canal system of your tooth for the most thorough treatment possible.
The biggest misconception about root canals is that they're painful. In reality, the procedure itself is designed to relieve pain, not cause it. It's the infected tooth that causes the agony — a root canal is the cure.
With modern anesthesia, sedation options, and microscopic precision, most patients report the procedure feels no different than getting a routine filling. Many even fall asleep during treatment.
Real reviews from real patients. See why thousands trust Foundation Dental Specialists with their smiles.
"I got a root canal treatment completed by Dr. Nerissa Lim and she was amazing! She has such a calm and professional demeanor, and you can tell that she focuses on quality over quantity. I highly recommend her for root canal treatments!"
Paul K.
Verified Patient
"I came in with a terrible toothache and they got me in the same day. The root canal was completely painless — I couldn't believe it. The team was so kind and reassuring throughout the entire process. Thank you!"
Sarah M.
Verified Patient
"Dr Lee and his assistant were great. They explained every procedure and it all turned out fast and efficient. The office staff is also great. They handled all billing accurately and quickly and were very accommodating working around my busy schedule."
May U.
Verified Patient

Every hour you delay treatment, the infection can spread. Our board-certified endodontists offer same-day emergency root canals to get you out of pain — fast.
Yes! We reserve time in our schedule specifically for dental emergencies. When you call, let us know you're in pain and we'll do our best to see you the same day. Our board-certified endodontists are experienced in handling urgent cases efficiently without compromising quality.
Common signs include severe toothache, prolonged sensitivity to hot or cold, swollen or tender gums, a darkened tooth, or pain when chewing. If you're experiencing any of these symptoms, call us immediately — the sooner we treat the infection, the better the outcome.
No. The procedure is exactly the same whether it's scheduled or an emergency. Your mouth will be completely numbed, and we offer sedation options for anxious patients. Most patients say the relief from their toothache far outweighs any minor discomfort during the procedure.
An endodontist is a dental specialist who completes 2–3 years of additional training beyond dental school, focusing exclusively on treating tooth pain and performing root canals. They use specialized equipment like surgical microscopes and 3D imaging. Our endodontists are also board-certified, meaning they've passed rigorous exams demonstrating advanced expertise.
Most patients return to work or normal activities the next day. Some patients even return the same day. You may experience mild tenderness for a few days, which can be managed with over-the-counter pain medication. We'll provide specific aftercare instructions tailored to your case.
The cost depends on the tooth and complexity of the case. Most dental insurance plans cover root canal treatment as a necessary procedure. Our treatment coordinators will help you understand your coverage and maximize your benefits. We also offer flexible financing options to make treatment affordable.
Delaying treatment allows the infection to spread, potentially leading to an abscess, bone loss, or even systemic infection. In severe cases, the tooth may become unsaveable and require extraction. Early treatment with a root canal can save your natural tooth and prevent more costly procedures down the road.
While we recommend calling ahead so we can prepare for your arrival, we understand that dental emergencies are unpredictable. Call us at (626) 796-5361 and we'll work to accommodate you as quickly as possible. Same-day appointments are available Monday through Friday.
Foundation Dental Specialists provides emergency root canal and toothache treatment to patients in Pasadena, Altadena, San Gabriel Valley, Eagle Rock, Glendale, Arcadia, and South Pasadena.
Take the first step toward a healthier smile. Our team will work with you to create a personalized treatment plan that fits your needs and budget.
Phone
(626) 796-5361Location
747 Locust Street, Suite 200
Pasadena, CA 91101
Free parking available behind the building
Office Hours
Monday – Friday: 8:00am – 5:00pm
Saturday & Sunday: Closed
We'll call you to confirm your preferred date and time.