2013 marks 100th anniversary of dental hygiene profession.
LDHA, USA.
Amanda
A
Mullen
D003756:Dental Hygienists / Q000266:history*; D003777:Dental Prophylaxis / Q000266:history; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D008145:Louisiana