Early Life and Education - John Nutting Farrar was born in Massachusetts in 1839. - He attended the Academy of Pepperell and a private school in Elmira, New York. - Farrar earned his DDS degree from the Pennsylvania College of Dental Surgery. - After graduating, Farrar spent four months in the West Indies. - He returned to Philadelphia to pursue his MD degree from Thomas Jefferson University.

Contributions to Orthodontics - Farrar's first published work on tooth movement was in Dental Cosmos in 1876. - He theorised that pressure moved teeth. - Farrar published his work in Dental Cosmos in 1888 and 1898, containing over 1400 sketches drawn by him. - He advocated for orthodontics to be established as a separate field from dentistry. - Farrar invented various dental appliances and contributed to the field of orthodontics.

Inventions - Farrar invented elastic car wheels and a typewriting machine. - He used 18k gold to regulate dental appliances. - Farrar also invented a water meter and a screw-activated syringe. - He developed antral tubes and tubes for treating the antrum through the nares. - Farrar's inventions had a significant impact on various industries.

References - Welch, Thomas Bromwell; Litch, Wilbur F.; Lee, Alfred P. (January 1, 1911). Dental Brief: An American Journal of Dental Science, Art and Literature. - Obituary Notes. The New York Times. June 12, 1913. - Farrar, John Nutting (January 1, 1889). A Treatise on the Irregularities of the Teeth and Their Correction: Including, with the Authors Practice, Other Current Methods. - Asbell, Milton B. (November 1, 1998). John Nutting Farrar 1839-1913. American Journal of Orthodontics and Dentofacial Orthopedics. - These references provide additional information and sources related to John Nutting Farrar's life and contributions.

Personal Life and Influence - Farrar was married to Sarah M. Chandler. - They had a son who died in infancy. - Farrar's personal life influenced his career choices and decisions. - His family provided support and motivation throughout his life. - Farrar's personal experiences shaped his perspective on dentistry and orthodontics.