The fibres of the periodontal ligament attach through cementum to the dentine surface. |
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Here, we can observe dentine tubules around which the apatite has been partially resorbed. |
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By postnatal day 5, the developing teeth have reached appositional stage where both enamel and dentine are deposited in the crown. |
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This dentine is darker than enamel, so teeth appear stained and discoloured. |
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Enamel and dentine defects of genetic origin are rare but are occasionally severe and may take a variety of forms and vary in their inheritance. |
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The bulk of the tooth consists of the bony substance dentine, surrounding the soft inner pulp that contains blood vessels and nerves. |
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Collagen also constitutes the tough, elastic fabric of tendons and ligaments, and the reinforcing dentine of tooth. |
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The blobs correspond to vacuities in the dentine and are probably due to calcite or some other post-mortem infilling. |
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If the sensitive dentine of the root is exposed, the tooth can become sensitive. |
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Whitening removes stains and lightens the teeth by acting on the surface enamel and the dentine inside the tooth. |
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Tooth enamel is much less porous than bone and dentine, and it has greater inorganic content, density, and crystallinity. |
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During gnawing, as the incisors grind against each other, they wear away the softer dentine, leaving the enamel edge as the blade of a chisel. |
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Among armadillos, some groups reduced their dentition in response to myrmecophagy and some acquired lobate teeth and accentuated differences in hardness of dentine types. |
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The mineral component of dentine may be any of several materials. |
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Fractures limited to the enamel and small amounts of dentine that are not sensitive may not require immediate treatment but should be checked by a dentist. |
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Because the cementum is very thin, it doesn't take much pressure to wear away this surface and expose the inner substance, dentine. |
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Wear can also occur, abrading the surface of, for example, a dentine bonding agent or glass ionomer after a couple of months. |
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In dental caries the use of PAD can eliminate residual bacteria in softened dentine and provide an environment which encourages rapid healing. |
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The smear layer is an artificial surface structure that is formed when dentine is abraded or cut. |
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The presence of dentine hypersensitivity and unstained tooth surfaces is often the only clinical manifestation of active toothwear. |
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The concentrated solution seems to demineralize dentine and thus slightly open dentinal tubules. |
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Then add to the dentine build-up individually with incisal and transparent porcelains. |
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Once the anatomical form is ready, reduce the incisal and interdental areas of the dentine in order to create enough space for further layering. |
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Cut back the dentine build-up in the incisal and interdental areas to create space for the additional layers of porcelain. |
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Consideration should be given to aging seals in future using both dentine and cementum to facilitate comparison and age-specific analyses. |
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Underlay occlusal area with opacious dentine OD A3 according to Layering Scheme. |
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Odontoblasts, the cells that give rise to the dentine of the teeth, have their origin in the neural crest, as do many of the cranial nerve cells. |
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The second dentine firing is used to make adjustments and to make up for firing shrinkage. |
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A similar study in which dentine was also used as the indicator of exposure was carried out using a cohort of 400 British children. |
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It reduces the hypersensitivity of the dentine and helps the neoformation of secondary dentine. |
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Dispense a sufficient thick layer of Ventura Unibond 2 over the enamel and dentine. |
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Even their dermal plates were made up of acellular aspidine and dentine, requiring little metabolic investment beyond the initial cost of construction. |
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An incipient dentine tract is present on the lingual side of the tooth. |
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Further, X-rays showed there was no deposit of secondary dentine as would have been expected if the abrasion had been due to natural attrition before death. |
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Teeth form mainly from neuroectoderm and comprise a crown of insensitive enamel surrounding sensitive dentine and a root that has no enamel covering. |
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Weihs, Hardness and Young's modulus of human peritubular and intertubular dentine. |
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About three-fourths of the mineral found in the body is associated with calcium in the skeleton and tooth dentine formation, with the remainder contained in soft tissues and body fluids. |
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Another substance, cement, came to supplement the dentine and enamel forming the teeth of earlier types, and provided additional material to resist abrasion. |
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The orthodentine of tubercles and ridges resembles the dentine in the crown of katoporid thelodonts, and some other heterostracan scaled taxa. |
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The dentine, softer and less mineralised, wears at a faster rate than the peripheral enamel, creating morphologically what one would observe to be a cup or crater. |
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Cementum is yellowish and softer than either dentine or enamel. |
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Now build up the complete anatomical tooth mould with dentine porcelain. |
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Anterior teeth are positioned as an initial suggestion so that the curvature of the labial surface corresponds as closely as possible to the curvature of the dentine core. |
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For this purpose, composite pins reinforced with fibreglass have proven to be suitable, since they possess an elasticity and appearance similar to that of natural dentine. |
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The infected dentine emits a rather dark red florescence signal. |
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As most dentine hypersensitivity is associated with either gingival recession or erosive tooth wear, care must be taken to also address these predisposing conditions and not only the hypersensitivity. |
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When the gum retracts, the dental collets and the dentine can be exposed. |
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A shark's tooth, although superficially like that of a piranha, appears in many respects to be a modified scale, while that of the piranha is like that of other bony fishes, consisting of dentine and enamel. |
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Pathologic demonstration model, 4 x life size, with various pathological conditions like caries, dental calculus, pyorrhea, free dentine and abrasion. |
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He showed that the skull matches closely those of early amphibians and that the teeth are characterized by complex infolding of the dentine called labyrinthodont, also present in primitive tetrapods. |
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If you wish, you can get a first idea of how the Kiss concept can work for you by ordering the starter kit with its six dentines or the test kit with a single dentine. |
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The orangy zone on the side corresponds to tertiary dentine. |
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It serves to silicify and inorganize organic substances, especially to inorganize and disinfect carious dentine. |
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Clinicians often treat dentine hypersensitivity based on results of previous treatment success rather than addressing the specific aetiological and predisposing factors for each patient. |
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There does, however, appear to be compelling evidence that tooth brushing and tooth wear are aetiological factors in the localisation and initiation of dentine hypersensitivity. |
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This discussion could be said to indicate that all toothpastes are aetiological factors in dentine hypersensitivity but this is not necessarily the case. |
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Effect of hydrogen peroxide and sodium perborate on biomechanical properties of human dentine. |
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Radiographs occasionally reveal unusual intra-coronal radiolucencies in the dentine of unerupted teeth. |
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As the incisors grind against each other, the softer dentine on the rear of the teeth wears away, leaving the sharp enamel edge shaped like the blade of a chisel. |
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Odontocetes possess teeth with cementum cells overlying dentine cells. |
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The domination of extra-somatic space with various tools and visually guided projectiles empowered a genus otherwise devoid of cornified and dentine defenses. |
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That scale-like protection was not metal, but strong layers of bone covered with enamel-like dentine, compounds called vitrodentine, cosmine or ganoine. |
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