The American Dental Association is founded in Niagara Falls, New York.

The American Dental Association (ADA) is an American professional association established in 1859 which has more than 161,000 members. Based in the American Dental Association Building in the Near North Side of Chicago, the ADA is the world's largest and oldest national dental association and promotes good oral health to the public while representing the dental profession.

The ADA publishes a monthly journal of dental related articles named the Journal of the American Dental Association.