CHICAGO--(BUSINESS WIRE)--The American Dental Association (ADA) today announced an exclusive endorsement of DRB (Darien Rowayton Bank), a leader and the fastest marketplace lender to $1 billion in student loan refinancing originations. The endorsement allows ADA member dentists the opportunity to refinance existing federal and private undergraduate and graduate school loans at a lower rate to save tens of thousands of dollars, on average. “We’ve listened carefully to our members, particularly t