Delta Dental, Renaissance Dental and Guardian are the highest ranked dental insurance providers, according to the Consumers Advocacy Group. Delta Dental and Renaissance Dental have ratings of 10 out 10, and Guardian has a rating of nine out of 10, as of 2015.
The group rates plans by criteria such as the number of providers in network, cost savings, premiums, annual maximums and treatments covered, explains the Consumers Advocacy Group. The group ranks Delta Dental number one according to these criteria. This plan is the largest, with over 145,000 providers and 292,000 dental locations, and it serves one-third of Americans. Renaissance Dental has over 200,000 locations and offers preventive coverage up to 100 percent. Guardian has over 171,000 provider locations and average discounts of 30 percent.