- Hours of Operation! Tues-Thurs: 8:30 am- 6:00 pm |
- Fri: 8:30 am - 5:00 pm |
- Sat and Mon: By Appointment Only
Dr. Seihoun has always been an outdoorsman at heart. Whether it’s hiking through the woods or casting a line on a quiet lake, nature is where he feels most at peace. But his journey into dentistry began in a very different place—his small hometown in Massachusetts, where he grew up without access to fluoridated water and struggled with poor oral hygiene as a kid.
Like many people, Dr. Seihoun had a tough time with dental visits growing up. In fact, he was terrified of the dentist. After several painful experiences, his fear became so intense that he needed to be sedated just to get through a routine appointment. Dental care was also financially difficult for his single mom, who worked hard to provide for the family. Despite these challenges, she did everything she could to get him the care he needed.
What’s interesting is that those scary trips to the dentist eventually sparked a curiosity. Young Dr. Seihoun started watching procedures closely in a hand mirror, trying to understand what was going on. That curiosity grew, and over time, it helped him overcome his fear. Eventually, it inspired him to pursue dentistry himself—because he knew firsthand how scary and overwhelming it could be, and he wanted to change that experience for others.
Today, Dr. Seihoun is especially passionate about helping patients who are nervous or afraid of the dentist. He takes extra time to talk with them, explain procedures, and make sure they feel heard, safe, and comfortable every step of the way. His goal is always the same: to make each visit as easy and pain-free as possible.
Dr. Seihoun’s path to dentistry was anything but ordinary. He earned his bachelor’s degree in Biology from the University of Massachusetts, graduating Cum Laude. He then became a certified dental assistant and worked in the field for seven years. Fascinated by prosthetics like crowns, dentures, and bridges, he went on to attend dental lab school, where he learned how to craft them by hand. He graduated at the top of his class from Middlesex Community College with a 4.0 GPA in Dental Laboratory Technology.
Still hungry to learn more, Dr. Seihoun moved to Washington, D.C., and earned his Doctor of Dental Surgery (DDS) from Howard University College of Dentistry. While there, he received the Outstanding Student in Endodontics award and was even offered a specialty position in root canals—but he chose to remain a general dentist so he could treat a wide variety of cases and connect with more patients.
After several years practicing in Southern Maryland, Dr. Seihoun took a big step and purchased the office of the now-retired Dr. Vass. He renamed it Posh Dental Arts, where he now leads a team dedicated to compassionate, high-quality care—especially for those who have had difficult dental experiences in the past, just like he did.
Dr. Nazemian is a board-certified pediatric dentist who brings both expertise and heart to her work. She earned her Bachelor of Science in Biology from George Mason University, then went on to complete dental school and a two-year residency in Pediatric Dentistry at Howard University College of Dentistry, where she received her specialty certificate.
During her residency, Dr. Nazemian was honored with the Pediatric Dentistry Leadership Award for achieving the highest academic average throughout her postdoctoral training. She is now a proud Diplomate of the American Board of Pediatric Dentistry, having completed the board’s rigorous certification process.
Dr. Nazemian is also on staff at MedStar St. Mary’s Hospital, where she treats patients who require general anesthesia due to complex dental needs or severe anxiety.
Outside of the office, Dr. Nazemian loves spending time outdoors and enjoying nature. Her free time is all about family—whether it’s hiking, going to the park, or simply relaxing at home with her husband and two young sons. Her gentle, nurturing approach to dentistry is shaped not only by her professional training but also by her experience as a mom.
