These two terms get used interchangeably in U.S. dental marketing, and they shouldn't. They solve different problems at different price points.
A dental answering service is a shared call center that picks up phones after hours or during overflow, takes a message, and forwards it. They cost $0.80–$1.50 per call and they prevent you from losing a brand-new lead at 7pm. They do not book appointments, run recall, verify insurance, or know your providers' preferences. They are a safety net, not a team member.
A dental virtual assistant (or virtual dental receptionist) is a dedicated remote team member who works inside Dentrix, Open Dental, Eaglesoft, Curve, or Denticon during your business hours. They answer calls live, book and confirm appointments, run a structured recall cadence, verify insurance benefits before each visit, and follow up on treatment plans. They cost $2,250–$3,200/month and they replace or extend your in-house front desk.
The decision is simple. If your problem is 'we miss after-hours calls and lose new patients,' get an answering service. If your problem is 'our front desk is overwhelmed, recall is falling through, and we can't keep up with verifications,' you need a virtual dental assistant. Most growing practices end up with both — the VA owns the day, the answering service catches the nights and weekends.
One warning: some vendors market answering services as 'virtual receptionists.' Ask whether the person is dedicated to your practice, whether they work inside your PMS, and whether they own outcomes (recall %, fill rate, denial rate). If the answer is no on all three, you're buying an answering service with better branding.
"The systems that worked for one location will fail at three. Centralize early."