The California Dental Association’s biannual conventions were established more than 100 years ago. Previously known as Scientific Sessions, CDA Presents The Art and Science of Dentistry is held twice each year, once in Anaheim and once in San Francisco. Dental professionals from around the world attend the conventions to learn about the latest clinical and technological advances in the industry, earn C.E. and network. The Anaheim meeting typically draws more than 27,000 dental professionals; San Francisco, usually more than 16,000.