A-dec is a dental office furniture and equipment manufacturer based in Newberg, Oregon, United States. It is considered one of the largest dental equipment makers in the world, and as of 2002 is Newberg's largest employer with 832 employees. Founded in 1964, the company's annual revenue of $250 million comes from the sale of products such as dental chairs, stools, delivery systems, medical lighting, cabinetry, and other accessories.