Dr. Sandra Selnick and Dr. Kathleen McKeon are trusted Orthodontists in Ellicott City, Clarksville, and Columbia MD for over 30 years. Award winning specialists are closer than you think.
About OX Orthodontix
The OX team is experienced and talented with a commitment to working with you and your family to create a comfortable, stress-free, and rewarding experience every time you visit our practice.
From your first appointment to treatment completion, we are excited to make your experience a great one. Two convenient offices and early and late hours to accommodate any schedule, we know you’ll love our excellent team and orthodontists.
Dr. Mitra Derakhshan
Dr. Mitra Derakhshan has worked with Invisalign for over 10 years and has demonstrated her expertise with the clear aligner system by being published in the Journal of Clinical Orthodontics, giving seminars in orthodontics, and lecturing on orthodontic topics worldwide.
Before Dr. Derakhshan joined the OX Orthodontix team, she received her dental degree (DDS) at the University of Michigan and her master’s degree (MS) and Certificate in Orthodontics at the University of Illinois at Chicago.
Outside of the office, Dr. Derakhshan enjoys spending time with her family, traveling, exploring the outdoors, and watching a romantic comedy movie every once in a while.
Dr. Sandra Selnick
Dr. Sandra Selnick is dedicated to staying on the cutting edge of innovative orthodontic treatment to provide the best possible treatment results for her patients. Dr. Selnick takes pride in “creating beautiful smiles for all ages” using the latest advancements in orthodontic technology.
As the daughter of a pediatric dentist and a pediatrician, Dr. Selnick was bound to work as a medical professional too! She graduated with a Bachelor of Science (BS) from the University of Miami before earning her doctoral degree in dentistry (DDS) from the University of Maryland where she graduated with special recognition from the American Association of Orthodontists. After completing a hospital-based General Practice Residency with the VA Medical Center in Baltimore, Dr. Selnick’s interest in orthodontics led her back to the University of Maryland for three years of specialty training resulting in a Certificate in Orthodontics. She concurrently pursued her research in orthodontic computer analysis, earning a Master (MS) in Oral Biology.
In previous positions, Dr. Selnick was in private practice and worked as a staff orthodontist at Children’s Hospital at Washington Hospital Center. She is leader and innovator using Invisalign to treat patients since its introduction.
Dr. Selnick is also dedicated to giving back to her community and her strong ties in the Howard County area are a source of pride in her professional and private life. When she is not in the office, Dr. Selnick is active with her son, who is a swimmer attending the Naval Academy and her daughter, enjoying her first year at University of Maryland.
Dr. Kathleen McKeon
Dr. Kathleen McKeon has been excited about orthodontics since she was a young girl growing up in Catonsville, MD. It has been her lifelong dream to be able to share that passion and to make happier and healthier smiles in her hometown. Dr. McKeon graduated with a Bachelor of Science degree (BS) from the University of South Carolina before returning to Baltimore and earning her doctoral degree in dentistry (DDS) from the University of Maryland. While in dental school she was recognized by the American Association of Orthodontists and was inducted into the Omicron Kappa Upsilon Honor Society. Her interest in orthodontics then led her to the University of Pittsburgh where she received a Certificate in Orthodontics and a Master of Dental Science degree (MDS) after three years of specialty training. In her free time, Dr. McKeon is a certified yoga instructor that enjoys spending time with friends and family (including her two cats!), staying active, and enjoying good food and wine. Dr. McKeon is excited to be back home again, to serve the community she grew up in, and to be a part of the OX Orthodontix team!
Find out more about the team who’ll be looking after you during your orthodontic treatment journey at our offices in Columbia/Ellicott City and Clarksville/River Hill.
We work hard to train and learn the latest in orthodontic treatment and customer service for an experience unlike any other office you can imagine.
Jenifer has enjoyed 30 years in the dental industry making beautiful smiles. With her husband, two children and Chico the Pomeranian, she is quite busy in her spare time. Her daughter is a high school senior, who is a summer intern at OX, and her son is in college.
Jenifer said, “Being part of this high tech office keeps me on the cutting edge of orthodontics and therefore, I am always able to give our patients the latest and greatest of what our field has to offer.”
I have been with OX Orthdontix since 2011. I enjoy learning about orthodontics and the new technology the office embraces, which is amazing. I look forward to seeing everyone with their beautiful smiles! I am originally from Carroll County and now reside in Howard County. In my free time I enjoy to travel, shop, and watch movies.
I am a recent graduate of UMBC, where I studied Biology. I decided to take some time off from school to start working.
I am so grateful for the opportunity to be working in an environment where I am constantly learning an abundance of information about the field of orthodontics. I love being challenged to always provide top notch care and the ability to work with the latest technology. I am honored to be a part of the OX team. It is a pleasure to work with both the staff and the patients.
I’ve been a part of the OX team since 2010. I like learning about new advancements and technology as they occur in orthodontics. I am a southern girl at heart, but currently reside in Gaithersburg, MD with my husband and two-year-old daughter, Julianna. Together, we love to go to the park, shop (more like look!), and bake scrumptious desserts for everyone at OX.
Christa is originally from Northumberland, PA, but now lives in Baltimore.
Christa said, “I love working at OX because of the enthusiastic, high-energy environment, as well as my team’s obvious passion for our work and care for our patients.”
Christa has a B.S. in International Business and French, and is also a classically trained opera singer.
Candace has over 13 years of experience in the dental field starting as an assistant and working in all other aspects of the dental field as well. The knowledge she has gained through the years and the experience she has, makes it possible for her as a treatment coordinator to help patients gain more confidence that they will achieve the beautiful smile they envision.
When she is not at work you may find her at one of her son’s sporting events, boating, camping or even riding on the back of her husband’s motorcycle! She also enjoys traveling with friends and family.
“I am excited to be part of a team that embraces new technology and empowers me to create a personalized plan tailored to the patient’s preferences and pocketbook,” Candace said.
Ashley is a Howard County native, and grew up in Ellicott City.
She likes working at OX because of the staff and patients.
Ashley said, “I am always excited to see the patients and help them along in their smile journeys, and I am so honored to work with the team and latest technology while constantly being able to learn about orthodontics!”
Ashley is an undergraduate student at University of Maryland with a passion for dentistry, and in her free time she enjoys playing the flute, watching old TV shows, and spending time with family and friends.
Malinda grew up in Centreville MD, a very small town on the Eastern Shore.
She said, “I like working at OX because I enjoy meeting new people, and love helping others achieve their beautiful smile.”
A little-known fact about Malinda; she traveled to Italy to play softball and represent the USA.
Rikell has lived in Maryland all her life and is originally from Annapolis. She has worked in orthodontics for 11 years. Some of her favorites are singing and Tacos! Rikell said “I enjoy working at OX because of how technically advanced the office is. That makes OX a cool and hip place to work.”
New Patient Coordinator / Front Desk Admin
New Patient Coordinator / Front Desk Admin
Nicole originates from Indiana, lived in Arizona for 5 years and then moved to Maryland. She has worked in the dental industry for 27 years. Favorites are pizza and also her 3 cats. Days off, you can find her riding on the back of a motorcycle through the country roads. She loves working at OX not just because the doctors and staff are AMAZING; the orthodontic field has been a large interest of hers in all those years of dentistry.