Expert Endodontic Care
When You Need It Most
Painless root canals, dental emergency treatment, and advanced endodontic procedures — delivered by board-certified specialists across four Northern Virginia locations.
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Saving teeth. Changing experiences.
Most people arrive here anxious. They've been told they need a root canal, or they're in pain and don't know why. At One Endodontics, we've built our practice around changing that experience entirely.
Our endodontists specialize in one thing: the inside of your tooth. That focused expertise — combined with the latest technology and a genuinely caring team — means you'll leave feeling better than you expected. We serve patients across Falls Church, Sterling, Gainesville, and Fredericksburg, Virginia.
Request an AppointmentMeet Dr. Kargoli
Dr. Saif Kargoli is a recognized leader in microscopic endodontics with a reputation for managing the most complex root canal and periapical cases. A graduate of Columbia University and the University at Buffalo — where he served as chief resident — he previously served on faculty at the University of Maryland's Department of Endodontics. He is an active member of the American Association of Endodontists and has volunteered in Jordan, Jamaica, the Dominican Republic, and the United States. Fluent in English and Arabic, with working knowledge of Spanish.
Endodontic Services
We specialize exclusively in endodontic care — the diagnosis, treatment, and surgery of conditions affecting the dental pulp and surrounding tissue. Every procedure we perform is designed to save your natural tooth.
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.
Root Canal Retreatment
→When a previous root canal hasn't healed or a new infection develops, retreatment gives your tooth a second chance.
Apicoectomy
→A minor surgical procedure that removes the tip of the tooth root when infection persists. Microscopic precision, minimal discomfort.
Dental Emergencies
→Dental trauma requires fast, specialized care. We treat dislodged, fractured, and avulsed teeth — often the same day.
Cracked Tooth Treatment
→One of the most under-diagnosed causes of tooth pain. We use advanced imaging to find fractures and determine the best path forward.
Microsurgery
→Surgical microscopes and ultrasonic instruments for a level of precision that dramatically improves outcomes in complex cases.
Why see a specialist?
Your general dentist is excellent at what they do. Endodontics is what we do — exclusively. After completing dental school, our doctors went on to complete an additional two to five years of advanced specialty training focused solely on diagnosing tooth pain and treating conditions that affect the inner tooth.
- ● Board-certified and fellowship-trained specialists
- ● 25+ root canal procedures performed per week, per doctor
- ● Advanced 3D CBCT cone beam imaging for precise diagnosis
- ● Same-day emergency appointments available
- ● Four convenient Northern Virginia locations
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.
Mark K.
Google Review
"I recently had a root canal performed by Dr. Al-Hassany, and for a procedure I was dreading, the entire process was smooth and pain free. The evaluation was thorough, the staff friendly, and the facility modern and clean."
Anna V.
Google Review
"I'm usually a total scaredy-cat when it comes to anything dental, but everyone treated me like an absolute princess from the moment I walked in. Dr. Lee's gentle and patient approach put me completely at ease."
Antonio A.
Google Review
"As a high-anxiety patient, I was terrified. When I found out I needed a root canal, I genuinely considered avoiding treatment. Dr. Lee put my mind at ease completely — the procedure was seamless and painless."
Tee
Google Review
"I experienced the worst tooth pain I've ever had. The office got me a same-day appointment and I'm incredibly grateful. From the doctor to the front desk, everyone was kind, compassionate, and made me feel safe."
Ehab A.
Google Review
"Dr. Mansour takes the time to explain every step of the treatment clearly, which makes patients feel comfortable and confident. The treatment itself was done smoothly and with care."
Patient Care
"We take the time to answer every question, ensuring you feel confident in your care."
Common questions
Our clinic gallery
A glimpse into our modern facilities across four Northern Virginia locations — designed with your comfort in mind.
Insurance & financing
We accept most major dental insurance plans. Our team will verify your coverage before your appointment and walk you through exactly what's included — no surprises.
For patients with out-of-pocket costs, we offer financing through Cherry — an easy, flexible payment plan you can apply for in minutes, right from your phone. We believe cost should never be the reason someone avoids saving a tooth.
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.