The Delta Dental Plans Association has agreed to provide oral health education services and, in some areas, screening services and preventive care for children enrolled in Head Start preschool programs.

The Oak Brook, Ill., Delta Dental association will be working with National Head Start Association, Washington, to fight a cavity epidemic that is plaguing small children.

Organizers of the National Health and Nutrition Examination Survey found that tooth decay in baby teeth in children ages 2 to 5 increased more than 24% between the 1988-1994 survey period and the 1999-2004 survey period.

In other philanthropy news, Aetna Inc., Hartford, has donated $500,000 to the Amistad Center for Art & Culture, Hartford.

The Amistad Center, located in the Wadsworth Atheneum Museum of Art in Hartford, owns a collection focusing on the African-American experience.

The center will use the grant to pay for a photography exhibit and to start an artist in residence program.