(Medical Xpress)—In 1998, Ian Tibbets lost vision in his right eye, some time after he severely injured the cornea with a piece of scrap metal. Later on he also lost vision in his left eye. Tibbets was eventually referred ...
An inexpensive, cavity-fighting liquid called silver diamine fluoride (SDF) works as well as dental sealants to keep tooth decay at bay in a school cavity prevention and treatment program, according to a new study by researchers ...
Mar 4, 2024
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According to a recent study, tooth enamel damage common in celiac disease may be caused by an autoimmune reaction triggered by gut or food proteins. The Institute of Dentistry at the University of Eastern Finland was involved ...
Nov 24, 2023
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You might say that a sweet tooth turned sixth-year psychology Ph.D. student Clara Raithel onto the human sense of smell.
Oct 30, 2023
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The sting of a toothache or the discovery of a cavity is a universal dread. Dental caries, more commonly known as tooth decay, is an insidious adversary, taking a toll on millions of mouths worldwide. Caries can lead to pain, ...
Oct 19, 2023
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A new study from researchers at Regenstrief Institute and Indiana University School of Dentistry reports on linking electronic health records and electronic dental records to provide better care and outcomes for individuals ...
Aug 23, 2023
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Organoids have now been created from stem cells to secrete the proteins that form dental enamel, the substance that protects teeth from damage and decay. A multi-disciplinary team of scientists from the University of Washington ...
Aug 14, 2023
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Over 30 years of dentistry, Sami Dogan has treated just about every kind of tooth ailment. Cavities are simple to fill. Dental implants have become routine. But there's one problem, he said, that annoys even the most experienced ...
Jul 10, 2023
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Taking good care of your teeth may be linked to better brain health, according to a study published in the July 5, 2023, online issue of Neurology. The study found that gum disease and tooth loss were linked to brain shrinkage ...
Jul 5, 2023
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Collaborating researchers from the University of Pennsylvania School of Dental Medicine and the Adams School of Dentistry and Gillings School of Global Public Health at the University of North Carolina have discovered that ...
Jun 8, 2023
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Teeth (singular tooth) are small whitish structures found in the jaws (or mouths) of many vertebrates that are used to tear, scrape, and chew food. Some animals, particularly carnivores, also use teeth for hunting or defense. The roots of teeth are covered by gums. Teeth are not made of bone, but rather of tissues of varying density and hardness.
Teeth are among the most distinctive (and long-lasting) features of mammal species. Paleontologists use teeth to identify fossil species and determine their relationships. The shape of the animal's teeth are related to its diet. For example, plant matter is hard to digest, so herbivores have many molars for chewing. Carnivores, on the other hand, need canines to kill prey and to tear meat.
Mammals are diphyodont, meaning that they develop two sets of teeth. In humans, the first set (the "baby," "milk," "primary" or "deciduous" set) normally starts to appear at about six months of age, although some babies are born with one or more visible teeth, known as neonatal teeth. Normal tooth eruption at about six months is known as teething and can be painful.
Some animals develop only one set of teeth (monophyodont) while others develop many sets (polyphyodont). Sharks, for example, grow a new set of teeth every two weeks to replace worn teeth. Rodent incisors grow and wear away continually through gnawing, maintaining relatively constant length. Many rodents such as voles (but not mice) and guinea pigs, as well as rabbits, have continuously growing molars in addition to incisors.
This text uses material from Wikipedia, licensed under CC BY-SA
