Javascript is not enabled on this browser. This site will not function properly if Javascript is not enabled.

Endodontist in Bethesda, Rockville, MD, Root Canal Specialist


Dr. Joseph Son

Welcome to our office

Thank you for choosing Capital Endodontics & Microsurgical Center, the specialty office of Dr. Joseph Son.  We are dedicated to providing exceptional care in a comfortable environment utilizing state-of-the-art technology.  

Our mission is to do everything possible to provide you with a positive experience in our office and serve you with the highest quality of endodontic care obtainable.





Dear Patients and Doctors:

Your safety and well-being are of the utmost importance to Capital Endodontics and Microsurgical Center.  As our country and the world continue to deal with the effects of COVID-19, we write to inform you about the AAE’s and American Dental Association’s (ADA) newest guidelines and recommendations for seeking dental care.

The AAE has recommended limiting non-urgent dental treatment and we intend to do so while remaining available to any patient who seeks emergency care. Please be advised that our hours may change. We will only be seeing patients who are in need of urgent or emergency care. If you or your patients are in pain and need care, call 301-530-1131. We are working to provide our community with safe treatment options.

In addition to following the guidance from the CDC, Capital Endodontics and Microsurgical Center has updated our sanitation policies to prevent the spread of the virus. We are disinfecting our offices’ common areas like patient waiting rooms and check-in desks after every patient, limiting interpersonal interactions (social distancing), and we are providing pre-operative mouth rinse with enhanced vigilance. 

For scheduled patients that are feeling ill or have been in contact with someone that has tested positive for the virus or traveled outside the United States within the last 14 days, their appointment will be rescheduled 14 days laterIf a patient within these preexisting conditions is in pain, the condition will be managed with appropriate analgesics and antibiotics until we can treat the patient as recommended by AAE.  *For other patients, please come accompanied with as few other people as possible: 1. Adult, please come alone, or if needed come with one other adult.  2. Children should be accompanied by one guardian only. 

We are here to support you and will play our part to fight the spread of coronavirus. Thank you for understanding the measures we must put in place in order to keep everyone healthy and safe. 

Please stay safe.



Dr. Joseph Son and Dr. Deborah Yeh.

Practice Profile

At the endodontic practice of Dr. Joseph Son, we utilize the latest technology to provide you with the best care.  Technology such as the surgical microscope, CT scan, digital radiographs, and ultrasonics are just some of the tools that we use to manage your problem.

Our focus is on flawless service, attention to detail, and genuine concern for our patients.While a trip to the dentist for a root canal is never something that a patient looks forward to, we  hope that with caring attention to detail we can make the process as easy as possible.  Our entire staff is fully committed to this goal.

Maintaining our reputation for excellence is extremely important to us. We welcome any feedback from you about your time with us and what we can do to make your visit the best that it can be.