The American Dental Association (ADA) is a not-for-profit and the largest professional association for dentistry in the United States, representing more than 157,000 dentist members. It is the premier source of oral health information in the United States if not the entire world, and has advocated for the public’s health as well as promoted the art and science of dentistry since 1859. In this connection, has developed and continues to develop the SNODENT dental diagnostic code set.

ADA and IHTSDO recently upgraded a 2012 Cooperation Agreement to a full Collaboration Agreement that focuses on agreed joint work.