Insurance company Sun Life Financial has entered into an agreement with Cofinity, a division of health insurance company Aetna that provides health-related services and products, to expand Sun Life Financial's dental network for its group insurance customers.

Through this partnership, Sun Life Financial will offer the Aetna Dental Access network in 13 states in the US and also in Washington, DC.

Sue Schoch, vice president of group dental of Sun Life Financial Employee Benefits Group, said: This arrangement will immediately benefit our customers in many parts of the country. By combining our claim service with this solid network, we will increase the momentum of our group dental offering.