Covington, Virginia • 540-965-1160


High-tech dental care for our Alleghany Highlands community.


About Our Dental Office

We believe high quality oral health care includes the absolute minimum in discomfort and inconvenience. This is easier to achieve early on. It's vital to get little dental problems fixed early. Preventing major (and minor) problems is good, basic health care. Not only is it "more comfortable," it is also less costly. Read More

Water Laser Technology

Our high-tech dental technology uses laser energy and a gentle spray of water to perform a range of dental procedures without the heat, vibration and pressure associated with the dental drill. With some procedures it’s possible to use less anesthetic–even no anesthetic at all–with this equipment versus using a drill. Learn More

Dental Implants

Dental implants are an alternative to traditional bridgework and dentures. They offer several real advantages. Because implant restorations look and feel more like natural teeth, they offer higher levels of comfort, security, and confidence over traditional treatments. Dental implants will not slip or move. More Here

Diode Laser Teeth Whitening

A bright, white smile is attractive. And many of the foods and drinks we are attracted to stain our teeth. What to do? First and foremost, regular brushing of the teeth and gums is basic. Also, try some of the whitening toothpastes. If you need to do more, we can help. Often it takes only a single one-hour visit. Details Here

PerioSciences products

Historically, oral care research has focused on bacteria. While they utilize many natural ingredients with antibacterial properties, PerioSciences' approach has been to focus on salivary antioxidants. At this time their products are only being sold by dentists. We have these products in our office and can answer your questions. Find Out More


By appointment
8:15 am-5:00 pm
Tuesday 8:15 am-5:00 pm
Wednesday 8:15 am-5:00 pm
Thursday 8:15 am-5:00 pm
Friday 8:15 am-5:00 pm

About our dentists


Dr. David L. Wheeler specializes in high quality dental care for adults and children, including high-technology implants.

He is involved in numerous professional organizations, including the American Dental Association, the Virginia Dental Association, the Piedmont Dental Association, the Roanoke Dental Society and the Academy of General Dentistry. He earned his Doctorate of Dental Surgery from Virginia Commonwealth University in 1984.

Locally, Dr. Wheeler is a member of the Chamber of Commerce, the Bath County Lions Club and the Alleghany Highlands Chorale. He serves on the board of the Allegheny Highlands Arts Council.

His interests outside the office include his family, horticulture, singing, alpine skiing, biking and working on his home in Warm Springs. He grew up in Narrows, Va.

Learn more HERE


Dr. Erin F. Cassilly has been practicing dentistry since 2012, with a focus on general family dentistry.

The Annapolis, Md., native joined the Covington, Va., practice in 2019. Before then, she was in a private practice in Maryland, then worked with the Rockbridge Area Health Center and New Horizons in Roanoke.

Dr. Cassilly was awarded her Doctorate of Dental Surgery from the University of Maryland School of Dentistry. She earned a Bachelor of Science degree at the University of Maryland, Baltimore County, and a Master's Degree in Biology from Towson University.

Away from the office Dr. Cassilly enjoys spending time at home near Lexington, Va., with her husband (also a health care professional) and their pre-school daughter, Brooke, where they enjoy gardening, cooking, and hiking in the Virginia mountains with their dog, Rufus, “a Shepherd-Hound mutt.” She is a member of the American Dental Association.