The Hollywood smile, characterized by white, straight teeth, is a complex phenomenon involving social, cultural, scientific and technological changes in the early 20th century. It emerged with the development of film, advertising, orthodontics and cosmetic dentistry.
The hookworm causes a parasitic infection the history of which helps show how the Rockefeller Foundation impacted on the United States federal healthcare provisions.
By asserting the hymen, a ubiquitous trait of female anatomy, 19th physicians reinforced the taboos affecting women's sexuality.
