[5][8] In 1949, he resigned his deanship at Meharry in protest of a regional plan for education in the southern states that would further promote racial inequality.
[1][9] After leaving Meharry, he became the chief of dental service at the Tuskegee Veterans Administration Medical Center.
In 1966 he was appointed chief of dental service at the Veterans Administration Research Hospital in Chicago, Illinois and associate professor of periodontics at Northwestern University.
Also in 1966, he joined the faculty of the University of Southern California, where he stayed until his retirement in 1989.
[2] Dummett authored over 300 articles in his academic career, and served as editor-in-chief of the National Dental Association for twenty-two years, beginning in 1953.