title: Historical perspectives on theories of periodontal disease etiology.
authors: Philippe
authors: P
authors: Hujoel
authors: Lívia Guimarães
authors: LG
authors: Zina
authors: Joana
authors: J
authors: Cunha-Cruz
authors: Rodrigo
authors: R
authors: Lopez
mesh_terms: D060755:Germ Theory of Disease / Q000266:history; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D010510:Periodontal Diseases / Q000209:etiology / Q000266:history*