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History Of Dental Treatments
The history of dental treatments dates back to thousands of years. The scope of this article is limited to the pre-1981 history. The earliest known example of dental caries manipulation is found in a Paleolithic man, dated between 14,160 and 13,820 BP. The earliest known use of a filling after removal of decayed or infected pulp is found in a Paleolithic who lived near modern-day Tuscany, Italy, from 13,000 to 12,740 BP. Although inconclusive, researchers have suggested that rudimentary dental procedures have been performed as far back as 130,000 years ago by Neanderthals. Regarding implants, one of the milestone progress is osseointegration which was termed in 1981 by Tomas Albrektsson. Dental implants There is archeological evidence that humans have attempted to replace missing teeth with root form implants for thousands of years. Remains from ancient China (dating 4000 years ago) have carved bamboo pegs, tapped into the bone, to replace lost teeth, and 2000-year-old rem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the History of writing#Inventions of writing, invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries. History is also an Discipline (academia), academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the historiography, nature of history as an end in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilson Popenoe
Frederick Wilson Popenoe (March 9, 1892 – June 20, 1975) was an American Department of Agriculture employee and plant explorer. From 1916 to 1924, Popenoe explored Latin America to look for new strains of avocados. He reported his adventures to the ''National Geographic Society''. He went to work for the U.S. Department of Agriculture in 1913 and became the chief agronomist of the United Fruit Company in 1925. Career Popenoe attended Pomona College as a special student for one year. Afterwards, he worked for the United Fruit Company, where he became the first director of the Panamerican Agricultural School, Zamorano in Honduras. Popenoe won numerous awards and received three honorary doctorates, from: Universidad Mayor de San Marcos in Lima, Peru; Pomona College; and the University of Florida in Gainesville, Florida. Personal life Popenoe was married to the British archeologist Dorothy Popenoe, who was involved in excavation of the Playa de los Muertos in Honduras. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edentulism
Toothlessness, or edentulism, is the condition of having no teeth. In organisms that naturally have teeth, it is the result of tooth loss. Organisms that never possessed teeth can also be described as edentulous. Examples are the members of the former zoological classification order of '' Edentata'', which included anteaters and sloths, as they possess no anterior teeth and no or poorly developed posterior teeth. In naturally dentate species, edentulism is more than just the simple presence or absence of teeth. It is biochemically complex because the teeth, jaws, and oral mucosa are dynamic (changing over time). Processes such as bone remodeling (loss and gain of bone tissue) in the jaws and inflammation of soft tissue in response to the oral microbiota are clinically important for edentulous people. For example, bone resorption in the jaw is frequently how the teeth were able to detach in the first place; the jaw in an edentulous area undergoes further resorption even aft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leonard Linkow
Leonard I. Linkow (February 25, 1926 – January 26, 2017) was an American dentist and pioneer in the field of oral implantology. In 1969, he was nominated for a Nobel Prize in medicine, making him the only dentist to be nominated for the prize. Linkow held 36 patents in dental science. Early life and education Linkow was born in Brooklyn, New York on February 25, 1926. He played baseball in high school and was signed to contract by the New York Giants to play for their minor league affiliate in Springfield, Ohio. He worked as a radio operator in the U.S. Army Air Force during World War II. Turning down a career in professional baseball, he attended New York University's College of Dentistry, graduating in 1952. Career Linkow placed his first dental implant in 1952. In his New York City dental practice, he placed and equipped over 100,000 oral implants. His innovations in oral implantology included various designs of blade implants (implants placed with cortical support), the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lund University
, motto = Ad utrumque , mottoeng = Prepared for both , established = , type = Public research university , budget = SEK 9 billion Facts and figures Lund University web site. , head_label = , head = Erik Renström , academic_staff = 4,780 (2022) (academic staff, researchers and employed research students) , administrative_staff = 2,890 (2022) , students = 46 000 (29 000 full-time e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthopedic Surgery
Orthopedic surgery or orthopedics ( alternatively spelt orthopaedics), is the branch of surgery concerned with conditions involving the musculoskeletal system. Orthopedic surgeons use both surgical and nonsurgical means to treat musculoskeletal trauma, spine diseases, sports injuries, degenerative diseases, infections, tumors, and congenital disorders. Etymology Nicholas Andry coined the word in French as ', derived from the Ancient Greek words ὀρθός ''orthos'' ("correct", "straight") and παιδίον ''paidion'' ("child"), and published ''Orthopedie'' (translated as ''Orthopædia: Or the Art of Correcting and Preventing Deformities in Children'') in 1741. The word was assimilated into English as ''orthopædics''; the ligature ''æ'' was common in that era for ''ae'' in Greek- and Latin-based words. As the name implies, the discipline was initially developed with attention to children, but the correction of spinal and bone deformities in all stages of life eventually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabbit
Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also contains the pikas). ''Oryctolagus cuniculus'' includes the European rabbit species and its descendants, the world's 305 breeds of domestic rabbit. ''Sylvilagus'' includes 13 wild rabbit species, among them the seven types of cottontail. The European rabbit, which has been introduced on every continent except Antarctica, is familiar throughout the world as a wild prey animal and as a domesticated form of livestock and pet. With its widespread effect on ecologies and cultures, the rabbit is, in many areas of the world, a part of daily life—as food, clothing, a companion, and a source of artistic inspiration. Although once considered rodents, lagomorphs like rabbits have been discovered to have diverged separately and earlier than their rodent cousins and have a number of traits rodents lack, like two extra incis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soft Tissue
Soft tissue is all the tissue in the body that is not hardened by the processes of ossification or calcification such as bones and teeth. Soft tissue connects, surrounds or supports internal organs and bones, and includes muscle, tendons, ligaments, fat, fibrous tissue, lymph and blood vessels, fasciae, and synovial membranes. with :q=a_E_E_ \qquad Q=b_E_E_ quadratic forms of Green-Lagrange strains E_ and a_, b_ and c material constants. W is the strain energy function per volume unit, which is the mechanical strain energy for a given temperature. Isotropic simplification The Fung-model, simplified with isotropic hypothesis (same mechanical properties in all directions). This written in respect of the principal stretches (\lambda_i): :W = \frac\left (\lambda_1^2 + \lambda_2^2 + \lambda_3^2 - 3) + b\left( e^ -1 \right) \right/math> , where a, b and c are constants. Simplification for small and big stretches For small strains, the exponential term is very small, thus neg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Titanium
Titanium is a chemical element with the symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver color, low density, and high strength, resistant to corrosion in sea water, aqua regia, and chlorine. Titanium was discovered in Cornwall, Great Britain, by William Gregor in 1791 and was named by Martin Heinrich Klaproth after the Titans of Greek mythology. The element occurs within a number of minerals, principally rutile and ilmenite, which are widely distributed in the Earth's crust and lithosphere; it is found in almost all living things, as well as bodies of water, rocks, and soils. The metal is extracted from its principal mineral ores by the Kroll and Hunter processes. The most common compound, titanium dioxide, is a popular photocatalyst and is used in the manufacture of white pigments. Other compounds include titanium tetrachloride (TiCl4), a component of smoke screens and catalysts; and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambridge University
, mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Scholars of the University of Cambridge , type = Public research university , endowment = £7.121 billion (including colleges) , budget = £2.308 billion (excluding colleges) , chancellor = The Lord Sainsbury of Turville , vice_chancellor = Anthony Freeling , students = 24,450 (2020) , undergrad = 12,850 (2020) , postgrad = 11,600 (2020) , city = Cambridge , country = England , campus_type = , sporting_affiliations = The Sporting Blue , colours = Cambridge Blue , website = , logo = University of Cambridge logo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Per-Ingvar Brånemark
Per-Ingvar Brånemark (May 3, 1929 – December 20, 2014) was a Swedish physician and research professor, acknowledged as the "father of modern dental implantology". The ''Brånemark Osseointegration Center'' (BOC), named after its founder, was founded in 1989 in Gothenburg, Sweden. Biography After studying at Lund University in Sweden, Brånemark became professor of Anatomy at Gothenburg University in 1969. Brånemark has been awarded many prizes for his work, including the coveted Swedish Society of Medicine's Soederberg Prize in 1992—often referred to as the 'mini- Nobel'—and the Swedish Engineering Academy's equally prestigious medal for technical innovation. Brånemark has also been honored with the Harvard School of Dental Medicine Medal for his work on dental implants in the United States and holds more than 30 honorary positions throughout Europe and North America, including the Honorary Fellowship of the Royal Society of Medicine in the UK. In 2003, he received an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peabody Museum Of Archaeology And Ethnology
The Peabody Museum of Archaeology and Ethnology is a museum affiliated with Harvard University in Cambridge, Massachusetts. Founded in 1866, the Peabody Museum is one of the oldest and largest museums focusing on anthropological material, with particular focus on the ethnography and archaeology of the Americas. The museum is caretaker to over 1.2 million objects, some of documents, 2,000 maps and site plans, and approximately 500,000 photographs. The museum is located at Divinity Avenue on the Harvard University campus. The museum is one of the four Harvard Museums of Science and Culture open to the public. History The museum was established through an October 8, 1866 gift from wealthy American financier and philanthropist George Peabody, a native of South Danvers (now eponymously named Peabody, Massachusetts). Peabody committed $150,000 to be used, according to the terms of the trust, to establish the position of Peabody Professor-Curator, to purchase artifacts, and to constr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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