Results 231 to 240 of about 14,382 (268)
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Fluoride concentration of dental calculus, surface enamel and cementum
Archives of Oral Biology, 1963Abstract Fluoride concentrations were determined in samples of cementum, surface enamel, supra- and sub-gingival calculus of ninety-one permanent human teeth. The cementum and surface enamel were removed by grinding from the root surfaces and peripheral enamel. The supra- and sub-gingival calculus were scaled off. Significant differences between the
J, YARDENI, I, GEDALIA, M, KOHN
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Afibrillar dental cementum in the rat and hamster
Journal of Periodontal Research, 1975Afibrillar cementum “spurs” have been observed as a direct coronal extension of fibrillar root cementum near the cemento‐enamel junction of rat molars. It was also present as a localized deposit over the dentin surface of a hamster mandibular molar near the bifurcation.
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A microradiographic comparison of sound and carious human dental cementum
Archives of Oral Biology, 1968Abstract The mineral distribution in sound and carious human acellular and cellular cementum was studied by microradiography of thin sections. Observations on the sound tissue confirmed the occurrence of alternating bands of high and low mineral content and also the formation of a densely mineralized layer at the external surface of cementum exposed ...
R, Furseth, E, Johansen
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PIXE analysis of human dental cementum
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1984Abstract The elemental composition of dental cementum, from teeth of children with ages between 11 and 14 years, has been determined using the well-established PIXE technique. This was carried out in situ, that is, without having to remove the cementum from the dental roots, and thus avoiding any contamination.
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Life History Variables Preserved In Dental Cementum Microstructure
Science, 1993The age and season of death of mammals, as well as other aspects of their life history, can be estimated from seasonal bands in dental cementum that result from variations in microstructure. Scanning electron micrographs of goats fed controlled diets demonstrate that cementum bands preserve variations in the relative orientation of collagen fibers that
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Distribution of fluoride across human dental enamel, dentine and cementum
Archives of Oral Biology, 1987This was determined across the entire width of sections from 20 mandibular premolars, containing enamel, coronal dentine, root dentine and cementum. An abrasive technique was used to sample all three dental tissues in a single experiment. In the profiles of fluoride distribution, fluoride concentration was thus precisely related to the position of the ...
H, Nakagaki +4 more
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Cementum matrix formation in vivo by cultured dental follicle cells
Bone, 2002Dental follicle is the fibrous tissue that surrounds the developing tooth germ, and it is believed to contain progenitors for cementoblasts, periodontal ligament cells, and osteoblasts. In this study, we report the presence of cementoblast progenitors in cultures of bovine dental follicle cells and demonstrate their differentiation capacity.
K, Handa +6 more
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Age Determination of Caribou by Annulations in Dental Cementum
The Journal of Wildlife Management, 1974The ages of 902 barren-ground caribou (Rangifer tarandus groenlandicus) were determined by examination of histological preparations of dental cementum. The resultant interpretation of the timing of deposition for cemental annulations and the occurrence of the first winter rest line were not in agreement with the only reported study of dental cementum ...
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International Journal of Osteoarchaeology, 2008
AbstractCementum banding patterns have been used by archaeozoologists and wildlife managers for a number of decades to assess the season and age at death of mammalian populations. However, the observation and measurement of the nature of cementum banding, especially that of the final band, has proved to be difficult except under conditions of excellent
C. M. Wall‐Scheffler, R. A. Foley
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AbstractCementum banding patterns have been used by archaeozoologists and wildlife managers for a number of decades to assess the season and age at death of mammalian populations. However, the observation and measurement of the nature of cementum banding, especially that of the final band, has proved to be difficult except under conditions of excellent
C. M. Wall‐Scheffler, R. A. Foley
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[Cleidocranial dysplasia--histological findings in the dental cementum].
Deutsche zahnarztliche Zeitschrift, 1978Up to now only very few reports on histological studies of teeth in cleidocranial dysplasia have been published. We are presenting a 12-year old boy with this syndrome. Seven of his teeth were studied microscopically. The most relevant results are as follows: acellular cementum in all teeth, almost complete missing of cellular cementum, normal ...
K K, Gundlach, R, Buurman
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