Results 141 to 150 of about 869 (181)
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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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Incisor microwear of Sumatran anthropoid primates
American Journal of Physical Anthropology, 1994AbstractSeveral studies have suggested that incisor microwear reflects diet and feeding adaptations of anthropoids. However, such studies have been largely qualitative, and interpretations have relied on anecdotal references to diet and tooth use reported in the socioecology literature.
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An evaluation of Keeley's microwear approach
Journal of Archaeological Science, 1981Abstract Lawrence Keeley has developed a microwear approach to lithic use-wear analysis which he claims will enable an investigator to reconstruct aspects of implement function. A notable feature of his approach is the assertion that distinctive wear-polishes form as a result of contact with specific worked materials, making the identification of ...
Gerald A. Holley, Terry A. Del Bene
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Microwear on quartz: Fact or fiction?
World Archaeology, 1985Abstract This paper presents the results of initial investigations of use wear traces left on experimental quartz tools. The edges of experimentally used quartz flakes were examined using both a light microscope and a scanning electron microscope. The wear traces were compared with those on flakes of Brandon flint (used for the same amount of time on ...
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A molar microwear texture analysis of pitheciid primates
American Journal of Primatology, 2017Dental microwear textures have been examined for a broad range of extant primates to assess their efficacy for reconstructing diets of fossil species. To date though, no dental microwear texture data have been published for pitheciid molars, despite reported variation in degree of sclerocarpy and, by extension, the fracture properties of foods these ...
Anna J. Ragni +2 more
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Dental microwear and dental function
Evolutionary Anthropology: Issues, News, and Reviews, 1994AbstractInvestigators have used many techniques to understand diet and tooth use in prehistoric species. A promising new addition to the analytical arsenal is dental microwear analysis—the study of microscopic wear patterns on teeth. On‐going work is proceeding on a number of fronts.
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