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Dr. Quyen Dang obtained his Doctorate of Dental Surgery from Howard University and has amassed over 20 years of experience in dentistry while consistently prioritizing ongoing education. He has pursued specialized training and obtained certifications in various advanced dental treatments, including:

• Advanced Invisalign® treatment
• Six Month Smiles® short-term orthodontics
• Lumineers® dental veneers
• Implants dentistry
• Sedation dentistry
• Cosmetic full-mouth makeover
• Botox

Optimal Dental Center, meticulously designed by Dr. Dang, is a state-of-the-art facility dedicated to crafting beautiful and healthy smiles. Recognized as a top 1% nationwide Diamond Invisalign® provider in 2023, Dr. Dang has continuously been honored as a Virginia Top Dentist by Virginia Living magazine since 2010 up to the present year, 2023. The Consumer Research Council of America acknowledged him as one of the country's top dentists in 2007, and he maintained this distinction from 2011 to 2018. Washingtonian also featured Dr. Dang as a leading dentist from 2015 to 2023.

Dr. Dang maintains professional memberships in the following organizations:

• The American Academy of Clear Aligner
• International Congress of Oral Implantologists (ICOI)
• American Dental Association (ADA)
• Virginia Dental Association (VDA)
• Academy of General Dentistry (AGD)
• Dental Organization for Conscious Sedation (DOCS)
• American Academy of Cosmetic Dentistry (AACD)
• American Academy of Facial Esthetics (AAFE)

• In addition to his professional commitments, Dr. Dang serves as a board member of Hope For Tomorrow, a non-profit organization dedicated to improving the smiles of underprivileged communities. His dedication to charitable service has earned him two President's Gold Medal awards.

Dr. Hieu Nguyen earned her Bachelor of Science with honors from George Mason University. She then went on to graduate with honors as one of the top 10 in the class of 2009 from Howard University College of Dentistry. Along with her Doctorate of Dental Surgery, Dr. Nguyen gained membership in the Pi Pi Kappa National Dental Honor Society.

Dr. Nguyen has continued her pursuit of excellence beyond the classroom. She was selected an American Top Dentist in 2010 by American Top Dentist Journal. Dr. Nguyen has been honored by The Leading Physicians of the World magazine, and was selected as Top Dentist of 2015 by the International Association of Dentists. She maintains her membership with the International Association of Dentists (IAD). Dr. Nguyen is certified in Botox Esthetic Skin Inst. and is currently pursuing continued education with Dawson Academy.

Outside the office, Dr. Nguyen has a passion for service and continuing education. She believes strongly in community and regularly provides free dental services to low income Fairfax and Loudon county families through NOVA Dental Clinic. Dr. Nguyen is actively involved in Operation Smile and Hope for Tomorrow, which support fund raising to provide free dental services for unfortunate children in third world countries, such as Vietnam.

Dr. Nguyen is a member of Vietnamese Fellowship at McLean Bible Church.

A 2006 graduate of the Baltimore College of Dental Surgery at the University of Maryland—the first dental school in the world—Dr. Zand has built her career on providing comprehensive, patient-focused care grounded in both science and artistry.

Throughout her career, Dr. Zand has been recognized as a Top Dentist throughout the Northern Virginia area and appears as a Dental Expert on the TOP Doctors Medical Interviews which can be seen on CNN, FOX News, Bravo and MSNBC. Dr Zand continues to pursue advanced training in the latest dental technologies and techniques. She is a top-tier Invisalign® provider and offers a wide range of services, including cosmetic dentistry, veneers, crown and bridge work, and dental implants.

For over eight years, Dr. Zand successfully owned and operated her own dental practice before choosing to sell it in order to spend more time with her children. She now enjoys working as an associate, where she continues to dedicate herself to creating positive, comfortable experiences for her patients.

With a passion for dentistry that began at the age of 14, Dr. Zand approaches each patient with empathy, precision, and a genuine commitment to excellence. She is an active member of the American Dental Association (ADA), Virginia Dental Association (VDA), and Academy of General Dentistry (AGD).