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Tooth Worm
The idea of a tooth worm is a theory of the cause of dental caries, periodontitis and toothaches. Once widespread, the belief is now obsolete, having been superseded by more scientific rationales. It was supposed that the disease was caused by small worms resident within the tooth, eating it away. History The origins of the belief are wrapped in obscurity. A prominent early mention, a Babylonian cuneiform tablet titled "The Legend of the Worm" (sometimes erroneously dated to Sumerian times), recounts how the tooth worm drinks the blood and eats the roots of the teeth – causing caries and periodontitis: "After Anu ad created heavenHeaven had created he earthThe earth had created the rivers,The rivers had created the canals,The canals had created the marsh,(And) the marsh had created the worm—The worm went, weeping, before Shamash, his tears flowing before Ea: "What wilt thou give for my food? What wilt thou give me for my sucking?""I shall give thee the ripe fig, (and) the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tooth Worm
The idea of a tooth worm is a theory of the cause of dental caries, periodontitis and toothaches. Once widespread, the belief is now obsolete, having been superseded by more scientific rationales. It was supposed that the disease was caused by small worms resident within the tooth, eating it away. History The origins of the belief are wrapped in obscurity. A prominent early mention, a Babylonian cuneiform tablet titled "The Legend of the Worm" (sometimes erroneously dated to Sumerian times), recounts how the tooth worm drinks the blood and eats the roots of the teeth – causing caries and periodontitis: "After Anu ad created heavenHeaven had created he earthThe earth had created the rivers,The rivers had created the canals,The canals had created the marsh,(And) the marsh had created the worm—The worm went, weeping, before Shamash, his tears flowing before Ea: "What wilt thou give for my food? What wilt thou give me for my sucking?""I shall give thee the ripe fig, (and) the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dental Caries
Tooth decay, also known as cavities or caries, is the breakdown of teeth due to acids produced by bacteria. The cavities may be a number of different colors from yellow to black. Symptoms may include pain and difficulty with eating. Complications may include inflammation of the tissue around the tooth, tooth loss and infection or abscess formation. The cause of cavities is acid from bacteria dissolving the hard tissues of the teeth ( enamel, dentin and cementum). The acid is produced by the bacteria when they break down food debris or sugar on the tooth surface. Simple sugars in food are these bacteria's primary energy source and thus a diet high in simple sugar is a risk factor. If mineral breakdown is greater than build up from sources such as saliva, caries results. Risk factors include conditions that result in less saliva such as: diabetes mellitus, Sjögren syndrome and some medications. Medications that decrease saliva production include antihistamines and antide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Periodontitis
Periodontal disease, also known as gum disease, is a set of inflammatory conditions affecting the tissues surrounding the teeth. In its early stage, called gingivitis, the gums become swollen and red and may bleed. It is considered the main cause of tooth loss for adults worldwide.V. Baelum and R. Lopez, “Periodontal epidemiology: towards social science or molecular biology?,”Community Dentistry and Oral Epidemiology, vol. 32, no. 4, pp. 239–249, 2004.Nicchio I, Cirelli T, Nepomuceno R, et al. Polymorphisms in Genes of Lipid Metabolism Are Associated with Type 2 Diabetes Mellitus and Periodontitis, as Comorbidities, and with the Subjects' Periodontal, Glycemic, and Lipid Profiles Journal of Diabetes Research. 2021 Jan;2021. PMCID: PMC8601849. In its more serious form, called periodontitis, the gums can pull away from the tooth, bone can be lost, and the teeth may loosen or fall out. Bad breath may also occur. Periodontal disease is generally due to bacteria in the mouth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toothache
Toothache, also known as dental pain,Segen JC. (2002). ''McGraw-Hill Concise Dictionary of Modern Medicine''. The McGraw-Hill Companies. is pain in the teeth or their supporting structures, caused by dental diseases or pain referred to the teeth by non-dental diseases. When severe it may impact sleep, eating, and other daily activities. Common causes include inflammation of the pulp, (usually in response to tooth decay, dental trauma, or other factors), dentin hypersensitivity, apical periodontitis (inflammation of the periodontal ligament and alveolar bone around the root apex), dental abscesses (localized collections of pus), alveolar osteitis ("dry socket", a possible complication of tooth extraction), acute necrotizing ulcerative gingivitis (a gum infection), and temporomandibular disorder. Pulpitis is reversible when the pain is mild to moderate and lasts for a short time after a stimulus (for instance cold); or irreversible when the pain is severe, spontaneous, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superseded Theories In Science
This list catalogs well-accepted theories in science and pre-scientific natural philosophy and natural history which have since been superseded by scientific theories. Many discarded explanations were once supported by a scientific consensus, but replaced after more empirical information became available that identified flaws and prompted new theories which better explain the available data. Pre-modern explanations originated before the scientific method, with varying degrees of empirical support. Some theories are discarded in their entirety, such as the replacement of the phlogiston theory by energy and thermodynamics. Some theories known to be incomplete or in some ways incorrect are still used. For example, Newtonian classical mechanics is accurate enough for practical calculations at everyday distances and velocities, and it is still taught in schools. The more complicated relativistic mechanics must be used for long distances and velocities nearing the speed of light, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Theory
A scientific theory is an explanation of an aspect of the natural world and universe that has been repeatedly tested and corroborated in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment. In circumstances not amenable to experimental testing, theories are evaluated through principles of abductive reasoning. Established scientific theories have withstood rigorous scrutiny and embody scientific knowledge. A scientific theory differs from a scientific fact or scientific law in that a theory explains "why" or "how": a fact is a simple, basic observation, whereas a law is a statement (often a mathematical equation) about a relationship between facts. For example, Newton’s Law of Gravity is a mathematical equation that can be used to predict the attraction between bodies, but it is not a theory to explain ''how'' gravity works. St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neo-Babylonian Empire
The Neo-Babylonian Empire or Second Babylonian Empire, historically known as the Chaldean Empire, was the last polity ruled by monarchs native to Mesopotamia. Beginning with the coronation of Nabopolassar as the List of kings of Babylon, King of Babylon in 626 BC and being firmly established through the fall of the Neo-Assyrian Empire in 612 BC, the Neo-Babylonian Empire was conquered by the Achaemenid Empire, Achaemenid Persian Empire in 539 BC, marking the collapse of the Chaldean dynasty less than a century after its founding. The defeat of the Neo-Assyrian Empire and subsequent transfer of power to Babylon marked the first time that the city, and Lower Mesopotamia, southern Mesopotamia in general, had risen to dominate the ancient Near East since the collapse of the Old Babylonian Empire (under Hammurabi) nearly a thousand years earlier. The period of Neo-Babylonian rule thus saw unprecedented economic and population growth throughout Babylonia, as well as a renaissance of cult ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuneiform
Cuneiform is a logo-syllabic script that was used to write several languages of the Ancient Middle East. The script was in active use from the early Bronze Age until the beginning of the Common Era. It is named for the characteristic wedge-shaped impressions (Latin: ) which form its signs. Cuneiform was originally developed to write the Sumerian language of southern Mesopotamia (modern Iraq). Cuneiform is the earliest known writing system. Over the course of its history, cuneiform was adapted to write a number of languages in addition to Sumerian. Akkadian texts are attested from the 24th century BC onward and make up the bulk of the cuneiform record. Akkadian cuneiform was itself adapted to write the Hittite language in the early second millennium BC. The other languages with significant cuneiform corpora are Eblaite, Elamite, Hurrian, Luwian, and Urartian. The Old Persian and Ugaritic alphabets feature cuneiform-style signs; however, they are unrelated to the cuneiform lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sumer
Sumer () is the earliest known civilization in the historical region of southern Mesopotamia (south-central Iraq), emerging during the Chalcolithic and early Bronze Ages between the sixth and fifth millennium BC. It is one of the cradles of civilization in the world, along with ancient Egypt, Elam, the Caral-Supe civilization, Mesoamerica, the Indus Valley civilisation, and ancient China. Living along the valleys of the Tigris and Euphrates rivers, Sumerian farmers grew an abundance of grain and other crops, the surplus from which enabled them to form urban settlements. Proto-writing dates back before 3000 BC. The earliest texts come from the cities of Uruk and Jemdet Nasr, and date to between c. 3500 and c. 3000 BC. Name The term "Sumer" ( Sumerian: or , Akkadian: ) is the name given to the language spoken by the "Sumerians", the ancient non- Semitic-speaking inhabitants of southern Mesopotamia, by their successors the East Semitic-speaking Akkadians. The Sumerians ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enki
, image = Enki(Ea).jpg , caption = Detail of Enki from the Adda Seal, an ancient Akkadian cylinder seal dating to circa 2300 BC , deity_of = God of creation, intelligence, crafts, water, seawater, lakewater, fertility, semen, magic, mischief , symbol = Goat, fish, goat-fish, chimera , consort = Ninhursag, Damkina , children = Marduk, Dumuzid, Ninsar, Ninkurra, Uttu, Ninti , parents = An and Nammu , Greek_equivalent = Poseidon, PrometheusStephanie West. "Prometheus Orientalized" page 147 Museum Helveticum Vol. 51, No. 3 (1994), pp. 129–149 (21 pages) Enki ( sux, ) is the Sumerian god of water, knowledge ('' gestú''), crafts (''gašam''), and creation (''nudimmud''), and one of the Anunnaki. He was later known as Ea ( akk, ) or Ae in Akkadian (Assyrian- Babylonian) religion, and is identified by some scholars with Ia in Canaanite religion. The name was rendered Aos in Greek sources (e.g. Damascius). He was originally the patron god of the city of Eridu, but la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Popol Vuh
''Popol Vuh'' (also ''Popol Wuj'' or ''Popul Vuh'' or ''Pop Vuj'') is a text recounting the mythology and history of the Kʼicheʼ people, one of the Maya peoples, who inhabit Guatemala and the Mexican states of Chiapas, Campeche, Yucatan and Quintana Roo, as well as areas of Belize, Honduras and El Salvador. The ''Popol Vuh'' is a foundational sacred narrative of the Kʼicheʼ people from long before the Spanish conquest of the Maya. It includes the Mayan creation myth, the exploits of the Maya Hero Twins, Hero Twins Hunahpú and Xbalanqué, and a chronicle of the Kʼicheʼ people. The name "Popol Vuh" translates as "Book of the Community" or "Book of Counsel" (literally "Book that pertains to the mat", since a woven mat was used as a royal throne in ancient Kʼicheʼ society and symbolised the unity of the community). It was originally preserved through oral tradition until approximately 1550, when it was recorded in writing. The documentation of the ''Popol Vuh'' is credited ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre Fauchard
Pierre Fauchard (January 2, 1679 – March 21, 1761) was a French physician, credited as being the "father of modern dentistry". He is widely known for writing the first complete scientific description of dentistry, ''Le Chirurgien Dentiste'' (''"The Surgeon Dentist"''), published in 1728. The book described basic oral anatomy and function, signs and symptoms of oral pathology, operative methods for removing decay and restoring teeth, periodontal disease (pyorrhea), orthodontics, replacement of missing teeth, and tooth transplantation. Biography Early years Fauchard was born in a very modest home in Saint-Denis-de-Gastines in 1679. In 1693 he joined the French Royal Navy at the age of 15, much to his family's distress, and came under the influence of Alexander Poteleret, a surgeon major, who had spent considerable time studying diseases of the teeth and mouth. During that time, Fauchard learned that sailors who were on long voyages suffered severely from dental ailments, scurv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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