Before revision: Since black dentists were still denied membership in such organization as the American Dental Association, and since dentists felt sidelined in the African-American National Medical Association (NMA), Ferguson tried again in 1913, forming with a total of 29 black dentists the Tri-State Dental Association.
After revision: Since black dentists were still denied membership in such organizations as the American Dental Association, and since dentists felt sidelined in the African-American National Medical Association (NMA), Ferguson tried again in 1913, forming with a total of 29 black dentists the Tri-State Dental Association.