Not only that, but seeing a dentist regularly can, according to the Academy of General Dentistry, help with early detection of potentially serious medical conditions, especially since more than 90 percent of all systemic diseases produce oral signs and symptoms.

Dr. Randi Tillman, chief dental officer at Guardian, is quoted in the report saying, "Good oral health is linked to positive overall health and self-esteem. Regular dental visits can help with certain health needs including managing diabetes, lowering heart disease risk, and contributing to a healthy pregnancy.”

With millennials among the least likely to go to the dentist twice a year, the study finds more than one in four adults fail to go at least once a year. Millennials have lots of reasons to procrastinate, too, with cost chief among them. Forty percent of adults have stalled recommended procedures or skipped exams, x-rays and tests in the past year thanks to higher out-of-pocket costs. Doing so, however, will cost them in the long run, with higher out-of-pocket expenses to cover restorative procedures.

So how can employers boost dental usage among employees (and thus drive their own costs down)? The study suggests they meet industry standards for preventive care benefits; expand their plan’s definition of preventive services; incentivize the use of in-network providers; and enhance plan member communication.