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*  Dentin
Differential wearing causes sharp ridges of enamel to be formed on the surface of the tooth (typically a molar), and to remain ... Exposed dentin in humans causes the symptom of sensitive teeth. Because dentin is softer than enamel, it wears away more ... Some mammalian teeth exploit this phenomenon, especially herbivores such as horses, deer or elephants. In many herbivores, the ... Secondary dentin is a layer of dentin produced after the root of the tooth is completely formed. Tertiary dentin is created in ...
*  Tooth whitening
The enamel layer may also be gradually thinned or even perforated by the various forms of tooth wear. Teeth may be darkened by ... teeth tend to be darker. Baby teeth (deciduous teeth) are generally whiter than the adult teeth that follow, again due to ... Tooth whitening (termed tooth bleaching when utilizing bleach), is either the restoration of a natural tooth shade or whitening ... In-Office, the teeth are polished using pumice, the bleaching agent is added. The teeth are washed with a lot of water then ...
*  Tooth enamel
Perikymata are usually lost through tooth wear, except on the protected cervical regions of some teeth, especially the ... Tooth whitening or tooth bleaching procedures attempt to lighten a tooth's color in either of two ways: by chemical or ... which increases the strength and wear resistance of those teeth. Tooth enamel is found in the dermal denticles of sharks. ... Bruxism, also known as clenching of or grinding on teeth, destroys enamel very quickly. The wear rate of enamel, called ...
*  Tooth
Only four teeth are used for chewing at a given time, and as each tooth wears out, another tooth moves forward to take its ... Three to four millimeters of the tooth is worn away by incisors every week, whereas the posterior teeth require a month to wear ... Overall, crocodilians may use 3,000 teeth from birth to death. New teeth are created within old teeth. True teeth are unique to ... grow a new set of teeth every two weeks to replace worn teeth. Rodent incisors grow and wear away continually through gnawing, ...
*  Tooth wear
... (also termed non-carious tooth substance loss) refers to loss of tooth substance by means other than dental caries ... Tooth wear is majorly the result of three processes; attrition, abrasion and erosion. These forms of tooth wear can further ... However, tooth wear is often a combination of the above processes. Many clinicians therefore make diagnoses such as "tooth wear ... "Clinical measurement of tooth wear: Tooth Wear Indices" (PDF). Journal of Clinical and Experimental Dentistry: e48-e53. doi: ...
*  Dentomandibular sensorimotor dysfunction
Tooth wear or breakage. Limited range of motion in the jaw and cervical (neck) spine. Painful or sore head and/or neck muscles ... By balancing the muscles, joints, and teeth, and controlling the way the body feels pain in the head and neck areas, long ... This major pathway of nerves controls pain signals from the teeth, face, head, and neck, and carries them to the brain. ... Any lifestyle limitation related to the teeth, muscles, or joints of the head and neck. There are many symptoms associated with ...
*  Evolutionary medicine
Kaifu, Y.; Kasai, K.; Townsend, G. C.; Richards, L. C. (2003). "Tooth wear and the ?design? Of the human dentition: A ... Why do we all have wisdom teeth, an appendix, and cells that can divide out of control? The paper of Paul Ewald in 1980, " ...
*  Koala
Implications of tooth wear in nutrition". Journal of Zoology. 209 (2): 169-81. doi:10.1111/j.1469-7998.1986.tb03573.x. Spratt, ... Around six years of age, the koala's chewing teeth begin to wear down and their chewing efficiency decreases. Eventually, the ... The partially worn molars of middle-aged koalas are optimal for breaking the leaves into small particles, resulting in more ... The animal's dentition consists of the incisors and cheek teeth (a single premolar and four molars on each jaw), which are ...
*  Dentin hypersensitivity
Other causes include smoking tobacco, which can wear down enamel and gum tissue, cracked teeth or grinding of teeth (bruxism). ... will help prevent receding gums and tooth wear around the cervical margin of teeth. Non-abrasive toothpaste should be used, and ... A non-abrasive diet will also help to prevent tooth wear. Flossing each day also helps to prevent gum recession caused by gum ... If teeth sensitivity is experienced after using a teeth whitening product, taking a break may help. At-home treatments include ...
*  Mesowear
Extending the tooth mesowear method to extinct and extant equids" Mesowear Equilibrium in Zoo Animals Tooth wear as a tool of ... mesowear variate mesowear shape The attrition: this kind of dental wearing is as a result of rubbing tooth to tooth and no ... The abrasion: rubbing food to tooth triggers this kind of tooth wearing more visible for grazer animals than browsers. Clauss, ... In brief, each animal has special feeding habits, which cause unique tooth wearing. Rough feeds cause serious tooth abrasion, ...
*  Dahl effect
Tooth wear Anderson, D.J. "Tooth movement in experimental malocclusion". Archives of Oral Biology. 7 (1): 7-15. doi:10.1016/ ... for example when restoring a case of severe anterior tooth surface loss. Typically, restoring the worn anterior teeth with ... A removable cobalt chromium platform was worn, which covered the upper palatal surface of the anterior teeth, while being held ... 18 year old patient with heavy wear on the palatal aspect of his dentition and no interproximal contacts in the anterior teeth ...
*  Down syndrome
Higher rates of tooth wear and bruxism are also common. Other common oral manifestations of Down syndrome include enlarged ... delayed exfoliation of baby teeth and delayed eruption of adult teeth, shorter roots on teeth, and often missing and malformed ... and early tooth loss, especially in the lower front teeth. While plaque and poor oral hygiene are contributing factors, the ... Individuals with Down syndrome also tend to have a more alkaline saliva resulting in a greater resistance to tooth decay, ...
*  Northern long-eared bat (myotis)
1957). "Longevity records and notes on tooth wear of bats". Journal of Mammalogy. 38 (3): 407-409. doi:10.2307/1376240. Service ...
*  Acid erosion
... , also known as dental erosion, is a type of tooth wear. It is defined as the irreversible loss of tooth structure ... and the gaps between teeth will become larger. There can be evidence of wear on surfaces of teeth not expected to be in contact ... Even low sugar contained in fruit is bad for the teeth since it is the sugar/acid exposure time which erodes the teeth, not the ... A change in shape of the teeth is also a sign of dental erosion. Teeth will begin to appear with a broad rounded concavity, ...
*  Shovel-shaped incisors
Clement, Anna F.; Hillson, Simon W.; Aiello, Leslie C. (2012-01-01). "Tooth wear, Neanderthal facial morphology and the ... The morphology of Neanderthal's anterior teeth has been seen as an adaptation to the heavy use of their canines and incisors in ... Acs, G., Pokala, P., & Cozzi E. (1992). Shovel incisors, three-rooted molars, talon cusp, and supernumerary tooth in one ... The differences observed in tooth morphology is believed to be partly determined by genetics. When present, shovel-shaped ...
*  Aviation medicine
Lurie, O; Zadik, Y; Tarrasch, R; Raviv, G; Goldstein, L (February 2007). "Bruxism in Military Pilots and Non-Pilots: Tooth Wear ...
*  Colin Cooper (psychologist)
"Relation between psychology and satisfaction with dental appearance in tooth wear patients". Eur J Prosthodont Restor Dent. 14 ...
*  Parafunctional activity
Lurie, O; Zadik, Y; Tarrasch, R; Raviv, G; Goldstein, L (February 2007). "Bruxism in Military Pilots and Non-Pilots: Tooth Wear ... Contrary to common belief, functional activities such as chewing are not the main cause of tooth wear. Parafunctional habits ... Whereas teeth rarely come into contact during normal chewing, grinding of teeth may occur 1-4 hours in a 24-hour period, most ... The amount of pressure placed on teeth during functional habits is 20-80 psi (0.14-0.55 MPa), but the pressure can range from ...
*  Stress in the aviation industry
Tooth wear and psychological stress". Aviation, Space, and Environmental Medicine. 78 (2): 137-139. Retrieved October 19, 2015 ... Stress can also take a physical toll on a pilot's body, such as grinding of their teeth in difficult situations or even bladder ...
*  Evolution of human intelligence
Puech P.-F., Puech S., Cianfarani F., Albertini H. (1989). "Tooth wear and dexterity in Homo erectus", pp. 247-251 in Hominidae ...
*  Early human migrations
Wood, Shannon Raye (April 1992). "Tooth Wear and the Sexual Division of Labour in an Inuit Population" (pdf). Department of ... "Fossil Teeth Put Humans in Europe Earlier Than Thought". The New York Times. 2011-11-02. Sankararaman, S.; Patterson, N.; Li, H ... A fragment of a jawbone with eight teeth found at Misliya Cave, Israel, have been dated to around 185,000 years ago. Layers ... Lunadong fossils support theory of earlier dispersal of modern man "Teeth from China reveal early human trek out of Africa". ...
*  Attrition (dental)
Dental attrition is a type of tooth wear caused by tooth-to-tooth contact, resulting in loss of tooth tissue, usually starting ... Tooth wear is a physiological process and is commonly seen as a normal part of aging. Advanced and excessive wear and tooth ... This tooth wear can be pathological or physiological. The number of teeth with incisal or occlusal wear increases with age. ... The pathological wear of the tooth surface can be caused by bruxism, which is clenching and grinding of the teeth. If the ...
*  Homo habilis
"Tooth wear and dentoalveolar remodeling are key factors of morphological variation in the Dmanisi mandibles". Proceedings of ... It is a lower jaw complete with teeth; due to the size of the small teeth, researchers estimate this juvenile individual had a ... These were later classified as "milk teeth", and therefore considered difficult to link to taxa, unlike permanent teeth. ... which had diverse physical traits and differences in tooth wear, suggest that all the contemporary groups of early Homo in ...
*  Abrasion (dental)
Tooth wear and wear investigations in dentistry. Journal of oral rehabilitation. 2012 Mar 1;39(3):217-25. Sadaf D, Ahmad Z. ... The most common cause of dental abrasion, is the combination of mechanical and chemical wear. Tooth brushing is the most common ... demineralization and therefore compromising the tooth structure to abrasive factors such as tooth brushing or normal wear from ... When the tooth structure is compromised, this is where the mineral content of the saliva can create shallow depressions in the ...
*  Timing belt (camshaft)
Older belts have trapezoid shaped teeth leading to high rates of tooth wear. Newer manufacturing techniques allow for curved ... Often overlooked, debris and dirt that mix with oil and grease can slowly wear at the belt and materials advancing the wear ... It has teeth to turn the camshaft(s) synchronised with the crankshaft, and is specifically designed for a particular engine. In ... A timing belt is usually a toothed belt -- a drive belt with teeth on the inside surface. A timing chain is a roller chain. ...
*  By the Great Horn Spoon!
Jack falls down a coyote hole by accident and is rescued by a former road agent wearing Cut-Eye Higgins' coat. Jack takes the ... The Justice of the Peace of Shirt-tail Camp negotiates to build a jail for Higgins, and lets him extract teeth, but once ...
*  Indian muntjac
They were shown to have a curvilinear relationship between age and tooth wear. The Indian muntjac is among the most widespread ... Studies of the wear on the molars have been shown to be a reliable method for judging age. Captive muntjac of known and ... Their large canine teeth help in the processes of retrieving and ingesting food. The Indian muntjacs are polygamous animals. ... They fight each other for territory using their antlers or their tusk-like upper canine teeth, and can even defend themselves ...