HCR Update from Mark Sanna: 11 million adults may drop their dental insurance as a result of a requirement in the affordable care act that they buy dental benefits for their children, the National Association of Dental Plans is warning. The changes could come about as a result of rules published online November 26 by HHS to define what "essential benefits" health insurance plans must include when sold to individuals or small groups, such as companies with fewer than 50 employees.