The National Dental Association is a professional association of minority dentists based in Washington, DC. Formed in 1913, it is the largest such association in the world and now operates in the United States, Canada and Latin America. The NDA aims to extend dental treatment and education to impoverished, disabled or minority populations, as well as those who may be unable to seek proper care due to age. It also works to maintain professional standards in dentistry and to encourage dental careers among minority populations.The National Dental Association is a professional association of minority dentists based in Washington, DC. Formed in 1913, it is the largest such association in the world and now operates in the United States, Canada and Latin America. The NDA aims to extend dental treatment and education to impoverished, disabled or minority populations, as well as those who may be unable to seek proper care due to age. It also works to maintain professional standards in dentistry