Delta Dental of Michigan | 11,407 followers on LinkedIn. Delta Dental of Michigan began operations in 1957, and today with its affiliates, is one of the largest dental plan administrators in the country. Delta Dental companies nationwide comprise the Delta Dental Plans Association, which provides coverage to more than 80 million Americans and operates two of the nation’s largest networks of participating dentists. In addition to providing superior dental benefits, Delta Dental of Michigan and the Delta Dental Foundation are committed to investing in initiatives that support healthy, smart, vibrant communities for all.