One Endodontics modern reception area in Northern Virginia

Choose Excellence in Endodontic Care for Your Dental Health

Painless root canals, dental emergency treatment, and advanced endodontic procedures — delivered by board-certified endodontists in Falls Church, Sterling, Gainesville, Fredericksburg, and Woodbridge.

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ABOUT ONE ENDODONTICS

One practice. One focus.
Your tooth.

At One Endodontics in Falls Church, Sterling, Gainesville, and Fredericksburg, VA, our skilled endodontists perform painless root canals and treat dental emergencies utilizing the most advanced technologies. We serve the areas of Northern VA.

Drs. Saif Kargoli, Hashim Al-Hassany, and Maan Zuaitar are careful and gentle, taking an interest to ensure every patient's procedure is painless. Our team is highly experienced and provides the highest standard of endodontic care.

Five Locations

Falls Church, Sterling, Gainesville, Fredericksburg, and Woodbridge — wherever you are in Northern Virginia, we are close by.

Same-Day Emergencies

Dental pain does not keep office hours. We see urgent cases the same day and provide first aid guidance over the phone while you are on the way.

Advanced Technology

Cone beam 3D CBCT imaging, operating microscopes, and digital X-rays let us see — and treat — what general offices routinely miss.

Genuinely Gentle Care

We explain every step before we take it and we never rush. We offer sedation options for patients who need a little extra help relaxing — no judgment, no pressure.

Our Specialists

Board-Certified Endodontists Dedicated to Your Care

Our specialists bring advanced endodontic training, board certification, and a genuine focus on patient comfort. At One Endodontics Falls Church, every provider is committed to one goal: giving your tooth the best possible outcome.

Diplomate, American Board of Endodontics Board Certified Endodontists American Association of Endodontics Omicron Kappa Upsilon Honor Society 5-Star Rated Practice (1,300+ Reviews)

Ready to meet our team in person? We welcome both referrals and self-referred patients at our Falls Church office. Call us or request a consultation online.

Professional Memberships & Affiliations
Root Canal Therapy

Root Canal Therapy

Far more comfortable than its reputation suggests. We remove infected pulp, clean and seal the canal, and have you back to normal fast.

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Apicoectomy

Apicoectomy

A minor surgical procedure that removes the tip of the tooth root when infection persists. Microscopic precision, minimal discomfort.

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Cracked Teeth

Cracked Teeth

One of the most under-diagnosed causes of tooth pain. We use advanced imaging to find fractures and determine the best path forward.

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Traumatic Injuries

Traumatic Injuries

Traumatic dental injuries require immediate care, and One Endodontics provides expert treatment across Falls Church, Sterling, Gainesville, and Fredericksburg to help save your natural tooth and restore your smile.

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Root Canal Retreatment

Root Canal Retreatment

If a previous root canal is causing persistent pain or sensitivity, root canal retreatment at One Endodontics can address the underlying issue and give your natural tooth a second chance.**

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Root Resorption

Root Resorption

One Endodontics specializes in diagnosing and treating root resorption using advanced 3D imaging and microsurgical techniques, catching this often-silent condition early and providing targeted care to preserve the natural tooth whenever possible.

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Sedation

Sedation

One Endodontics offers nitrous oxide and oral conscious sedation to help anxious patients feel calm and comfortable throughout their endodontic treatment, ensuring that fear never stands in the way of necessary dental care.

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Vital Pulp Therapy / Pulpotomy

Vital Pulp Therapy / Pulpotomy

One Endodontics offers vital pulp therapy and pulpotomy — conservative procedures that preserve living pulp tissue in the root, avoiding full root canal treatment while maintaining the tooth's natural biology and supporting continued root development in younger patients.

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Post and Core

Post and Core

One Endodontics provides post and core buildup procedures that create a stable internal foundation for crown placement, giving significantly weakened teeth the structural support they need for long-term function and durability.

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Microsurgery

Microsurgery

One Endodontics performs endodontic microsurgery using surgical-grade microscopes and ultrasonic instruments, giving patients with persistent infection or failed root canals a precise, minimally invasive path to saving their natural teeth.

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Internal Bleaching

Internal Bleaching

One Endodontics offers internal bleaching, a conservative procedure that whitens discolored non-vital teeth from the inside out — preserving natural tooth structure while delivering results that surface whitening products simply cannot achieve.

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Pulp Regeneration

Pulp Regeneration

One Endodontics offers pulp regeneration — a biologically based procedure that restores living tissue and encourages continued root development in young patients with immature teeth, providing a superior alternative to traditional root canal therapy.

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Regenerative Procedures

Regenerative Procedures

One Endodontics offers advanced regenerative endodontic procedures — including pulp regeneration, vital pulp therapy, and apexogenesis — that harness the body's own biological processes to preserve natural teeth, promote root development, and restore function for patients across Northern Virginia.

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Advanced Technology

Advanced Technology

At One Endodontics, we utilize cutting-edge technology — including 3D CBCT imaging, surgical microscopes, and digital X-rays — to deliver precise, accurate, and comfortable endodontic care across Northern Virginia.

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Considerations for Regenerative Procedures

Considerations for Regenerative Procedures

One Endodontics partners with referring dentists across Northern Virginia to provide evidence-based regenerative endodontic procedures for young patients with immature teeth, offering seamless referral coordination, collaborative treatment planning, and detailed follow-up communication throughout the process.

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Why see an endodontist?

Endodontists specialize in saving a patient's teeth, often with a root canal treatment. An endodontist goes through 5 years of general dental school, followed by 2 to 5 years of advanced endodontic training. Whereas general dentists average around 5 root canal procedures per week, an endodontist often performs over 25 root canals in a week.

At One Endodontics, we treat patients with dental emergencies every day. Call our office immediately if you are experiencing a dental emergency. Our team will provide first aid instructions over the phone and get you the help you need.

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What our patients are saying

We know a root canal isn't something you look forward to. Here's what patients say after they've been through it with us.

Breanna Plum Breanna Plum

Breanna Plum

June 13, 2026

Google Verified

"I had a wonderful experience with my endodontist and the entire team. From the moment I walked in, everyone was kind, welcoming, and professional. The doctor took the time to explain everything clearly, answered all of my questions, and made me feel comfortable throughout my appointment . I especially want to recognize Genesis at the front desk. She was incredibly friendly, patient, and helpful from start to finish. She went above and beyond to make scheduling, paperwork, and communication easy, and her positive attitude made a stressful situation much less overwhelming. The entire office genuinely cares about their patients, and it shows. I highly recommend this practice to anyone in need of endodontic care. Thank you all for providing such excellent service and making me feel so well cared for!"

Joyce Inman Joyce Inman

Joyce Inman

June 13, 2026

Google Verified

"Staff and Dr. Dieb took such great care of me from start to finish! They evaluated both of my teeth that were in pain and did 2 root canals the same day all so I wouldnt have to be in pain all weekend. Procedure was fast, easy and most importantly painless. They even had easy financing options that I took advantage of."

Isael Medrano Isael Medrano

Isael Medrano

June 12, 2026

Google Verified

""

Alireza Safdari Alireza Safdari

Alireza Safdari

June 12, 2026

Google Verified

"I had a great experience here. Everyone was so friendly and helpful."

James Jones James Jones

James Jones

June 12, 2026

Google Verified

""

Hunt Trucking Hunt Trucking

Hunt Trucking

June 12, 2026

Google Verified

"Such a wonderful experience! They got me in quickly, staff was friendly, caring, and professional! Dr. Khalid’s-Araghi was wonderful and took care of my root canal!!"

Alejandro Ortiz Alejandro Ortiz

Alejandro Ortiz

June 12, 2026

Google Verified

"Excellent customer service and very intelligent dealing regarding insurance coverage. Will definitely be back!"

Sarah Rearick Sarah Rearick

Sarah Rearick

June 12, 2026

Google Verified

"Dr. Adil and his staff are amazing . They are very professional and checked in constantly on my well being during my root canal procedure."

Sarah Herold Sarah Herold

Sarah Herold

June 12, 2026

Google Verified

"Went in for a consult and was able to get a root canal done that same day. Staff was nice and took time to explain things and answer all my questions."

Y F Y F

Y F

June 12, 2026

Google Verified

""

Jessica Salani Jessica Salani

Jessica Salani

June 12, 2026

Google Verified

"They did a great job accommodating my last minute appointment due to the pain I was in. Dr. Alhassany was clear in explaining my issue and level setting my expectations as for healing. My healing process has gone very smoothly and painless - I also found pricing to be very fair."

Joseph Williams Joseph Williams

Joseph Williams

June 12, 2026

Google Verified

""

Stephanie Benner Stephanie Benner

Stephanie Benner

June 11, 2026

Google Verified

"Great dentists, wonderful/kind staff!"

Mike Hall Mike Hall

Mike Hall

June 11, 2026

Google Verified

"Great experience! Dr Lee was so nice, gentle and informative throughout the procedure. Thank you"

Omar Amer Omar Amer

Omar Amer

June 11, 2026

Google Verified

"Best service , DR Z really cares about the patient and staff is great"

Sara Stankavage Sara Stankavage

Sara Stankavage

June 11, 2026

Google Verified

"Excellent. They broke down the treatment plan and cost and explained everything very well to where I can understand why the tooth needs work and what would happen if it was not treated. The doctor, Dr. James Lee,was very welcoming and explained everything perfectly."

David Toth David Toth

David Toth

June 11, 2026

Google Verified

"I had a fantastic experience with One Endodontics - Falls Church. I was referred by my general dentist following some lingering pain from a permanent crown. The staff and doctor were incredibly kind and patient and answered all my questions. Fortunately, I walked away without needing treatment, but I knew I would be comfortable and confident with whatever diagnosis I received based on the doctor’s explanations and thoroughness. Highly recommend One Endodontics and would gladly go back if (hopefully not when!) needed."

Eric Sweet Eric Sweet

Eric Sweet

June 11, 2026

Google Verified

"Had to do a root canal, extremely professional and skilled, felt nothing! All of the front office staff were amazing and kind. This will continue to be our go to place whenever needed!"

James McMinn James McMinn

James McMinn

June 10, 2026

Google Verified

"Doctor and staff were amazing! They got me in for an appointment next day, explained all costs as soon as I arrived and the procedure was quick and painless. Would 100% recommend One Endodontics in Gainesville!"

Antonio Shannon Antonio Shannon

Antonio Shannon

June 10, 2026

Google Verified

"I had a(n) GREAT EXPERIENCE!!! Will I recommend One Endodontics Yes, I will!!! Thanks for everything!!!"

Common questions

If you're experiencing tooth pain, prolonged sensitivity to hot or cold, swelling near a tooth, or have been told you may need a root canal — an endodontist is the right specialist to see. Most patients are referred by their general dentist, but you're also welcome to contact us directly.
A root canal removes infected or damaged tissue from inside your tooth, relieves the pain causing you grief, and seals the tooth to prevent future infection. With modern anesthesia and technique, the procedure itself is no more uncomfortable than a routine filling. Most patients are surprised by how easy it is.
Endodontists complete two to five additional years of specialty training beyond dental school, focused entirely on the diagnosis of tooth pain and treatment of the dental pulp. Our doctors perform over 25 root canal procedures per week — a level of volume and focus that makes a measurable difference in outcomes.
Yes — every day. If you're in significant tooth pain, call us immediately. We offer same-day emergency appointments across all five of our Northern Virginia locations and will provide first-aid guidance over the phone while you're on the way.
This happens, and it's exactly what retreatment is for. Our endodontists are experienced in diagnosing why a previous root canal has failed and performing retreatment to give the tooth a second chance — even in complex cases.
We accept most major dental insurance plans and will help you verify your coverage before treatment. For out-of-pocket costs, we offer financing through Cherry — flexible payment plans you can apply for in minutes.
Coverage & Payments

Insurance & Financing

We believe cost should never be the reason someone avoids saving a tooth. We accept most major dental insurance plans and offer flexible financing options to cover the rest.

Dental Insurance

We accept most major dental insurance plans. Our team will verify your coverage before your appointment and walk you through exactly what is included — no surprises, no guesswork.

  • Benefits verified before your appointment
  • Clear cost breakdown provided upfront
  • Most major PPO plans accepted
Verify My Coverage

Flexible Financing

For out-of-pocket costs, we offer financing through Cherry and CareCredit — flexible payment plans you can apply for in minutes, right from your phone.

  • Apply in minutes from your phone
  • Low monthly payment options available
  • No reason to delay necessary care
Cherry Financing CareCredit

Have questions about coverage or financing? Our team is happy to walk you through your options before your appointment.

Contact Us About Coverage

Request an Appointment

Fill out the form below and our team will contact you to confirm your appointment time, preferred location, and any insurance questions. For dental emergencies, please call your nearest location directly.