When the PSA block is combined with the anterior superior alveolar (ASA) block using an infraorbital approach, often referred to as the infraorbital (IO) block, the entire maxillary arch on one side may be anesthetized (except palatal tissues).
In 1878, Willard won the presidency of the Illinois WCTU, and the next year, Frances Willard became president of the national WCTU, following Annie Wittenmyer. Willard remained president of the national WCTU until her death. In 1883, Frances Willard was one of the founders of the World's WCTU. She supported herself with lecturing until 1886 when the WCTU granted her a salary.
Alice Hamilton was an American physician, research scientist, and author who is best known as a leading expert in the field of occupational health and a pioneer in the field of industrial toxicology. She was also the first woman appointed to the faculty of Harvard University. Her scientific research focused on the study of occupational illnesses and the dangerous effects of industrial metals and chemical compounds. In addition to her scientific work, Hamilton was a social-welfare reformer, human