Dr. Nicholas Leon-Guerrero, DDS, Dentist
We verify the medical license of each FindaTopDoc Verified Doctor to ensure that their license is active and they are in good medical standing.

Dr. Nicholas Leon-Guerrero, DDS

Endodontist | Endodontics

4350 Fairfax Dr. Suite 160 Arlington VA, 22203

About

My name is Dr. Nick Leon-Guerrero, and I am a Board-Certified Endodontist. I grew up in Modesto, California and attended college at the University of the Pacific. I continued at the University of the Pacific in San Francisco, CA for my dental school training and finished my degree in 2014. After that, I completed a one year General Practice Residency at Kings County Hospital in Brooklyn, NY. After one year in private practice, I decided to further my training with a two-year endodontics residency program at Columbia University in New York, NY. After graduation, I started private practice with Limited to Endodontics in Boston, MA. Currently I live and work in Arlington, Virginia with several outstanding colleagues at Dominion Endodontics. We have additional office in both Falls Church and Alexandria, Virginia. I love working here and taking care of my wonderful patients, but I am always excited for new opportunities. ​ I love the power endodontics has to save teeth. Our specialty is taking great strides in patient care by embracing fundamental ideas of the past and incorporating new innovative methods to provide the best care possible. I enjoy practicing at the cutting edge with regenerative, minimally invasive, and surgical techniques to reach patient-centered outcomes. My priority is always to provide successful treatment and gently alleviate pain for my patients.

Education and Training

Columbia University Certificate in Endodontics 2018

University of the Pacific DDS 2014

Kings county Hospital General practice Residency Certificate 2015

Board Certification

American Board of Endodontics

Provider Details

MaleEnglish
Dr. Nicholas Leon-Guerrero, DDS
Dr. Nicholas Leon-Guerrero, DDS's Expert Contributions
  • How is dental calculus removed?

    Dental calculus, or tartar, is a hard buildup of minerals and bacterial plaque in the oral cavity. Calculus must be removed manually by dental professionals using metal or ultrasonic instruments. The procedures in which the calculus will be removed are called a prophy (cleaning) or a Scaling and root planing (deep cleaning). READ MORE

  • What are the symptoms of an infected root canal?

    The symptoms of an infected root canal range from severe pain and swelling to no symptoms at all. Symptoms tend to come and go intermittently. Most infections begin with pain to pressure on the tooth or pain when pressing along the gum. More advanced infections with have a painful swelling or a bubble that appears on the gums. READ MORE

  • What are the symptoms of a bad root canal?

    The symptoms of an infected or failing root canal can range from severe pain and swelling to no pain or symptoms at all. If one is concerned about the possibility of a dental infection, I would recommend they see and endodontist for a consultation regarding the issue, READ MORE

  • How long do teeth hurt after a root canal?

    Post operative discomfort is normal for about 5-7 days after a root canal procedure. It is typical for the pain to increase for a period of 2-3 days before it starts to get better. If the pain is severe or you experience swelling after the procedure, it is recommended to contact your dentist as you may be experiencing a "flare up." The incidence of a flare up after a root canal is approximately 5-8% and the treatment is often a course of antibiotics. READ MORE

  • Is a root canal considered oral surgery?

    Typically a root canal is considered a non-surgical procedure. READ MORE

  • What does tooth erosion feel like?

    Tooth Erosion is generally a gradual process where the tooth wears away because of acid or abrasive contact. Most people will not feel any sensation from the erosion itself, but as more tooth structure becomes eroded, the nerves will become less insulated and there will be increased sensitivity to cold, sweets and brushing. READ MORE

  • How fast do antibiotics work for tooth abscess?

    When used as treatment of a tooth abscess, antibiotics will typically need to be in one's system for at least 24-48 hours before the drug begins to take affect. This amount of time is dependent on the dosage, type of drug, and the rate of absorption in a particular person's body. Please take all medications as described by your doctor and alert them of any negative side effects you may experience. Also, please remember that dental treatment in addition to antibiotics may be necessary to eliminate the underlying cause of the infection. READ MORE

  • Can a decayed tooth be saved?

    While new dental materials and dental technology can allow for more and more decayed teeth to restored, there are still limitations to these advances. Generally the less remaining tooth structure above the gum, the less likely the tooth is to be restored with long term predictability. Other factors that can effect the restorability of the tooth include the presence of a crack or fracture, periodontal disease, position in the mouth, the skill of the dentist, and bruxism. It is recommended to seek consultation with a dentist to determine if a tooth is restorable, and if non-restorable discuss what options you may have for replacement of the decayed tooth. READ MORE

  • Can you fix gum pockets?

    "Pocketing" of the gum occurs when the gingiva loses attachment to the tooth due to inflammation or infection from bacteria. In some cases, bone loss may accompany the gum attachment loss. This is termed "periodontal disease." With proper home care and deep cleanings by a dental office, one can typically reduce pocketing that has occurred. Some severe cases however my require surgery or be too far compromised to achieve adequate healing. A consultation with a dentist or specialist called a periodontist is recommended for those with gum pocketing to accurately determine prognosis and what treatments may be available for their specific case. READ MORE

  • Can you get an implant years after extraction?

    It is possible to place an implant many years after a tooth has been extracted, however there are several factors that can affect the success of these treatments. The first is that over time, the adjacent teeth may drift into a space and prohibit placement or restoration of an implant. The second factors is that over time, bone in the site may resorb (shrink) and prohibit placement of an implant due to insufficient bone. Sometime grafting can be done to overcome this, but it is not always successful. Not every patient or space is a candidate for implant placement. It is best for one to communicate with their doctor one's plans to replace the tooth in the future, so that space and bone may be maintained and allow for successful placement of an implant in the future. READ MORE

  • How do you know if root canal failed?

    Root canals, when done properly, generally have a success rate between 85-95%. Failure is rare, but does happen from time to time. If a root canal does not relieve the symptoms within a few weeks to months after the procedure, then it could be considered a failure. Many times, an X-ray will be required to evaluate changes in the bone. These changes may take months or even years to occur, but are an important indicator for success or failure of root canal treated teeth. Either way, the success or failure of a root canal is best determined through consultation and examination with a root canal specialist called an endodontist. READ MORE

  • How should you recover from a root canal?

    It is important to follow your dentists specific instructions after a root canal regarding post-operative care. Generally it is advised that one not each any hard or sticky foods while to the tooth has a temporary filling. The tooth may be pressure sensitive or uncomfortable, so one can take pain medication as advised by their doctor after the procedure READ MORE

  • Why do my gums feel inflamed after a root canal?

    Tender gums may be normal after a root canal but typically resolve within 2 weeks. If one has persistent pain after a root canal procedure, one should communicate with their doctor to determine the need for follow up or additional treatment. READ MORE

  • What can I eat 3 days after a tooth extraction?

    After an extraction, one should eat softer foods and avoid anything particularly hot or spicy. Most importantly, it is important to keep the area clean as advised by one's doctor after the procedure. READ MORE

  • What are the side effects of a wisdom tooth extraction?

    The typical side effects after a wisdom tooth extraction include pain, swelling, bruising, and difficulty opening the mouth. Some more serious side effects can include persistent bleeding or nerve paresthesia. One should personally speak with his or her own dentist to review any and all possible complications for any dental procedure. READ MORE

  • My gums hurt after my root canal?

    Gums may be sore after a root canal procedure due to several causes. First the injection site may have some soreness due to the insertion of the needle. Additionally, the gums near the tooth may be traumatized by the instruments used in a root canal procedure. Any inflammation caused by the procedure typically resolves within 7-10 days. Follow any instructions as given by your doctor after the procedure to help reduce the chance of complications. READ MORE

  • How long after root canal do you get a crown?

    Ideally, a tooth that has had a root canal should be crowned as soon as the postoperative pain has resolved, which is usually between 1-2 weeks. If the tooth has a temporary filling, it may be more vulnerable to fracture or reinfection. Best not to wait longer than 2 months to get the crown after the root canal to avoid these possible complications. READ MORE

  • Is there supposed to be a hole after wisdom tooth extraction?

    After a dental extraction, there may be a hole in the gum where the tooth was previously located. Gum tissue will cover the hole typically within 2-3 weeks and underneath new bone will fill in the space within 3-6 months. It is important during the healing phase that one keep the wound clean and follow the post-operative instructions given to them by their doctor to avoid complications. READ MORE

  • How does a root canal affect your gums?

    A root canal is completed within the tooth and therefore will not directly affect ones gums, which are outside the tooth. If the infection indirectly caused inflammation or abscess that presents in a patients gums or soft tissue, this should heal within weeks after a successful root canal. READ MORE

  • What hurts more tooth extraction or root canal?

    Generally receiving root canal treatment is more comfortable than a dental extraction, because the feeling of pressure that comes with a tooth extraction can not be fully diminished with local anesthesia. Both may be a comfortable experience as long has sufficient anesthesia has been achieved. READ MORE

Areas of expertise and specialization

root canalRoot canal retreatmentApicoectomyapical surgerydental traumaEndodonticsCBCTNitrous Oxide

Faculty Titles & Positions

  • Faculty University of the Pacific 2015 - 2016

Professional Memberships

  • American Dental Association  
  • American Association of Endodontists  

Charities and Philanthropic Endeavors

  • Northern Virginia Dental Clinic
  • AAE Foundation

Professional Society Memberships

  • American Association of Endodontists, American Dental Association, Virginia Dental Association, Northern Virginia Dental Society, The International Association of Dental Traumatology, American Academy of Orofacial Pain

Dr. Nicholas Leon-Guerrero, DDS's Practice location

Dominion Endodontics

4350 Fairfax Dr. Suite 160 -
Arlington, VA 22203
Get Direction
New patients: 703-940-3070
https://www.dominionendodontics.com

Dominion Endodontics

7115 Leesburg Pike 309 -
Falls Church, VA 22043
Get Direction
New patients: 703-534-0330
https://www.dominionendodontics.com

Dominion Endodontics

1650 King Street 300 -
Alexandria, VA 22314
Get Direction
New patients: 703-836-0006
https://www.dominionendodontics.com

Dr. Nicholas Leon-Guerrero, DDS's reviews

(0)
Write Review
America's Best Doctor

Recommended Articles

  • 20 Amazing Health Benefits and Uses of Mangosteen

    What is mangosteen?The scientific name of mangosteen is Garcinia mangostana and it belongs to the Clusiaceae family. It is a tropical tree that originates in Southeast Asia. The tree is thick and its leaves are glossy, large, and dark green in color. Its flowers are rose-pink in color. The fruit...

  • Reasons for Knee Replacement Surgery

    Knee replacement surgery is a surgical procedure that involves the removal of parts of your natural knee joint and replacing them with artificial parts known as prostheses. Knee replacement is a very common procedure used to repair your knee joint.Many conditions can make your doctor decide to...

  • What are the Surgeries Used in Treating Gallstones?

    Right below the liver is a small sac known as the gallbladder. Its function is to hold bile until it is required. The bile helps in the digestion/breakdown of fats. When fats are noticed by the gallbladder, it pushes the bile concentrate towards the small intestine through contractions.Bile pigment,...

  • Therapy Dogs can Make a Difference for Fibromyalgia Patients

    The main characteristics of fibromyalgia are the constant and chronic pain, and unrelenting fatigue. However, the pain is of a kind far beyond regular aching like the one caused by the flu. As a matter of fact, initially the symptoms may seem just like a common cold. When the disease progresses, the...

  • What Is Dysuria: Causes, Symptoms, and Treatment

    What is dysuria?Dysuria is the medical term for painful urination or discomfort while urinating. This painful, burning sensation is commonly associated with urinary tract infections, which are usually caused by bacteria. Dysuria is also a common symptom of cystitis (inflammation of the bladder) and...

  • Reasons Why You Would Need a Cataract Surgery

    Unfortunately, no particular drug or types of eye drops have been found to specifically reverse or prevent the formation of cataracts. There are eyeglasses that can be recommended by your doctor if you develop nearsightedness or blurred vision as a result of cataract formation. A surgical procedure...

Nearby Providers

Nearest Hospitals

MEDSTAR GEORGETOWN UNIVERSITY HOSPITALl

3800 RESERVOIR RD WASHINGTON DC 20007

Head east on North Utah Street 207 ft
Turn right onto North Taylor Street 531 ft
Turn left onto North Wilson Boulevard 5144 ft
Make a slight right onto North Clarendon Boulevard 321 ft
Continue straight onto Clarendon Boulevard 1.3 mi
Keep left at the fork onto Clarendon Boulevard 605 ft
Continue straight onto North Wilson Boulevard 654 ft
Turn left onto North Lynn Street 1449 ft
Keep right 550 ft
Continue straight onto Francis Scott Key Bridge (US 29) 1777 ft
Turn left onto M Street Northwest 446 ft
Continue straight onto Canal Road Northwest 2575 ft
Go straight onto MacArthur Boulevard Northwest 2883 ft
Make a slight right 200 ft
Go straight onto Reservoir Road Northwest 2889 ft
Turn right 433 ft
You have arrived at your destination, on the right

VIRGINIA HOSPITAL CENTERl

1701 NORTH GEORGE MASON DRIVE ARLINGTON VA 22205

Head west on North Utah Street 396 ft
Turn left onto Fairfax Drive (VA 237) 573 ft
Turn right onto North Glebe Road (VA 120) 1240 ft
Turn left onto Washington Boulevard (VA 237) 1179 ft
Turn right onto North Buchanan Street 1330 ft
Turn left onto 16th Street North 845 ft
Turn right onto North Edison Street 718 ft
Turn left 189 ft
Turn left 97 ft
You have arrived at your destination, on the right

HALQUIST MEMORIAL INPATIENT CENTERl

4715 NORTH 15 STREET ARLINGTON VA 22205

Head west on North Utah Street 396 ft
Turn left onto Fairfax Drive (VA 237) 573 ft
Turn right onto North Glebe Road (VA 120) 1240 ft
Turn left onto Washington Boulevard (VA 237) 1179 ft
Turn right onto North Buchanan Street 968 ft
Turn right onto 15th Street North 307 ft
You have arrived at your destination, on the right

VIRGINIA HOSPITAL CENTERl

1701 NORTH GEORGE MASON DRIVE ARLINGTON VA 22205

Head northwest on Leesburg Pike (VA 7) 137 ft
Make a sharp left 111 ft
Go straight onto East Broad Street (VA 7) 684 ft
Make a slight left onto Arlington Boulevard 107 ft
Turn left onto Wilson Boulevard 2522 ft
Continue straight onto North Wilson Boulevard 888 ft
Turn left onto North Patrick Henry Drive 5202 ft
Turn right onto 16th Street North 3631 ft
Turn left onto North Edison Street 718 ft
Turn left 189 ft
Turn left 97 ft
You have arrived at your destination, on the right

INOVA FAIRFAX HOSPITALl

3300 GALLOWS ROAD FALLS CHURCH VA 22042

Head northwest on Leesburg Pike (VA 7) 137 ft
Make a sharp left 111 ft
Go straight onto East Broad Street (VA 7) 348 ft
Make a sharp right onto Arlington Boulevard 587 ft
Take the ramp on the left 486 ft
Merge left onto North Arlington Boulevard (US 50) 3.3 mi
Take the ramp on the right 1716 ft
Keep left at the fork 325 ft
Go straight onto Gallows Road (SR 650) 3192 ft
Turn right onto Fairfax Hospital Gray Entrance 910 ft
Turn right 116 ft
Turn right 99 ft
You have arrived at your destination, on the right

HALQUIST MEMORIAL INPATIENT CENTERl

4715 NORTH 15 STREET ARLINGTON VA 22205

Head northwest on Leesburg Pike (VA 7) 137 ft
Make a sharp left 111 ft
Go straight onto East Broad Street (VA 7) 684 ft
Make a slight left onto Arlington Boulevard 107 ft
Turn left onto Wilson Boulevard 2522 ft
Continue straight onto North Wilson Boulevard 888 ft
Turn left onto North Patrick Henry Drive 4278 ft
Turn right onto Washington Boulevard (VA 237) 2071 ft
Turn left onto North Illinois Street 719 ft
Turn right onto 15th Street North 2893 ft
You have arrived at your destination, on the right

INOVA ALEXANDRIA HOSPITALl

4320 SEMINARY RD ALEXANDRIA VA 22304

1650 VA-7, Alexandria, VA 22314, USA
Head northeast on Diagonal Rd toward King St
66 ft
Turn right onto King St
328 ft
Turn left onto Harvard St
423 ft
Turn left onto Cameron St
0.2 mi
Turn right onto King St
0.8 mi
Turn left onto Janneys Ln
1.0 mi
Continue onto Seminary Rd
0.9 mi
Turn left onto N Howard St
177 ft
Turn right
246 ft
Turn left
325 ft
Turn rightDestination will be on the left
121 ft
4320 Seminary Rd, Alexandria, VA 22304, USA

SPRINGFIELD HOSPITALl

PO BOX 2003 SPRINGFIELD VT 5156

1650 VA-7, Alexandria, VA 22314, USA
Head northeast on Diagonal Rd toward King St
66 ft
Turn right onto King St
328 ft
Turn left onto Harvard St
423 ft
Turn left onto Cameron St
0.2 mi
Turn right onto King St
0.1 mi
Turn left onto Callahan Dr
0.2 mi
Turn right onto Duke StPass by Midas (on the left in 1.0 mi)
2.1 mi
Turn left onto S Gordon St
0.2 mi
Turn right onto Vermont Ave
0.2 mi
203 S Jenkins St, Alexandria, VA 22304, USA

UNITED MEDICAL CENTERl

1310 SOUTHERN AVENUE SE WASHINGTON DC 20032

1650 VA-7, Alexandria, VA 22314, USA
Head northeast on Diagonal Rd toward King St
66 ft
Turn right onto King St
0.4 mi
Turn right onto US-1 S/S Henry StContinue to follow US-1 SPass by W Marine (on the right in 0.4 mi)
0.6 mi
Slight right onto the Interstate 95 S/Interstate 495 W ramp to Richmond
0.4 mi
Keep left at the fork, follow signs for I-95 N/Baltimore/I-495 E and merge onto I-495 N/I-95 NPassing through District of ColumbiaEntering Maryland
5.2 mi
Take exit 4B for MD-414 E/St Barnabas Road toward Marlow Hgts
0.3 mi
Merge onto MD-414 E/St Barnabas Rd
0.7 mi
Turn left onto Wheeler RdEntering District of Columbia
1.8 mi
Turn right onto Southern Ave SEEntering Maryland
0.2 mi
Turn left onto 13th St SEEntering District of Columbia
0.1 mi
Turn rightDestination will be on the right
364 ft
1310 Southern Ave SE, Washington, DC 20032, USA