Results 131 to 140 of about 865 (177)
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Effect of taphonomic processes on dental microwear
American Journal of Physical Anthropology, 1999Taphonomic processes have the potential to affect microscopic wear on teeth and to modify the wear patterns so as to confound dietary reconstructions based on dental microwear which was formed during the lifetime of an animal. This study describes a series of experiments which were conducted to simulate various taphonomic agents and to record their ...
T, King, P, Andrews, B, Boz
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Dental microwear and diet in Venezuelan primates
American Journal of Physical Anthropology, 1992AbstractRecent microwear analyses have demonstrated that wear patterns can be correlated with dietary differences. However, much of this work has been based on analyses of museum material where dates and locations of collection are not well known. In view of these difficulties, it would be desirable to compare microwear patterns for different genera ...
M F, Teaford, J A, Runestad
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Microwear and morphology: Functional relationships between human dental microwear and the mandible
Journal of Human Evolution, 2006Microscopic pits and scratches form on teeth during chewing, but the extent to which their formation is influenced by mandibular morphology is unknown. Digitized micrographs of the base of facet nine of the first, second, and third mandibular molar were used to record microwear features from an archaeological sample of modern humans recovered from ...
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Hominoid Dental Microwear: Complications in the Use of Microwear Analysis to Detect Diet
Journal of Dental Research, 1984Analysis of dental microwear on chimpanzee molars reveals much variation that reflects jaw mechanics and occlusal function rather than diet. Observed microwear pattern differences relate to variations in molar position, facet type, and overall age of the tooth. Gradients in the amounts of shear and compression generated at different points in the molar
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Dental microwear of living Hadza foragers
American Journal of Physical Anthropology, 2019AbstractObjectivesStudies of dental microwear of bioarchaeological assemblages and extant mammals from museum collections show that surface texture can provide a valuable proxy for reconstructing diets of past peoples and extinct species. However, no study to date has focused on occlusal surface microwear textures of living hunter‐gatherers.
Peter S. Ungar +2 more
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Microwear mechanisms of coatings
Surface and Coatings Technology, 1995Abstract Microwear mechanisms of coatings are studied by focusing attention on mechanical wear. Wear rates and wear modes of chemically vapour-deposited TiN and Al2O3 coatings in abrasive sliding are observed experimentally with a scanning electron microscope which has a videotape recording system and a tribosystem.
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In vivo and in vitro turnover in dental microwear
American Journal of Physical Anthropology, 1989AbstractGiven the potential usefulness of dental microwear analyses in interpretations of archaeological and paleontological material, it is surprising how little we know about changes in individual microwear features through time. The purpose of this study was to document the turnover in primate dental microwear through in vivo dental studies of ...
M F, Teaford, O J, Oyen
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Mechanics of microwear traces in tooth enamel
Acta Biomaterialia, 2015It is hypothesized that microwear traces in natural tooth enamel can be simulated and quantified using microindentation mechanics. Microcontacts associated with particulates in the oral wear medium are modeled as sharp indenters with fixed semi-apical angle.
Oscar, Borrero-Lopez +3 more
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Microwear processes of polymer surfaces
Wear, 1993Abstract An atomic force microscope was used to scan-scratch polycarbonate (PC), polymethyl-methacrylate (PMMA) and epoxy (EP) surfaces. A diamond tip with a radius of 0.1 μm was used for scratching and for profile measurements. The sample surfaces were scan-scratched with a load of 500 nN and three different feeds (50, 25 and 12.5 nm).
R. Kaneko, E. Hamada
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On the relationship of dental microwear to dental macrowear
American Journal of Physical Anthropology, 2009AbstractDental microwear analysts have demonstrated that hard diets leave numerous microscopic pits on occlusal surfaces. The relationship between occlusal pitting and gross macrowear, however, is not well known. The current study seeks to elucidate the relationship between dental microwear and macrowear by determining if microscopically pitted teeth ...
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