"26/09/2006" / Coursework / Bibliography: leaves 258-259 (v. 2) / 2 v. : / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / This research found that laser scanning of dental impressions using a split-impression technique is possible. It also found that here is no statistical difference between the four methods of representing dental arches. Therefore, plaster models, laser-scanned plaster models, combined laser-scanned half-impressions and CT-scanned full impressions are equivalent methods for representing dental arches. --p. 103. / Thesis (D.Clin.Dent.)--University of Adelaide, School of Dentistry, 2006

Thesis (M.S.)--University of Washington.

Thesis (M.S.)--University of Washington.

No description available.

Thesis (M.S.)--University of Michigan, 1960.

Thesis (M.S.)--University of Michigan, 1960.

The current study has re-visited two distinctive patterns, namely pottery and millet, both of which conflict with conventional narratives concerning trans-Eurasian exchange. The significance of this lies beyond the simple matter of chronology, but rests on the relationship between the movement of agricultural resources and of other items of material culture. This in turn is related to the larger debate over whether the movements are stimulated by farmers without material culture (bottom up) or other populations of more prestigious status (top down). Specifically, in terms of the pottery pattern, my thesis has re-evaluated the pottery similarity between Cucuteni-Tripolye Culture, Anau-Namazga Culture and Yangshao Culture. Previous studies regarding this issue are limited by localised typological analyses and fragmented technological studies. Having had a comprehensive comparative study of all three cultures, my study confirms that there are both typological and technological similarities between Cucuteni-Tripolye pottery, Anau-Namazga pottery and Yangshao pottery, contradicting with previous arguments that the similarity lies in stylistic patterns alone. Also, there are both similarities and differences between the material culture context of the three pottery assemblages as well. As for the millet pattern, I have re-examined pre-2nd millennium BC charred millet grains and millet impressions by conducting two case studies. In particular, my review of pre-2nd millennium BC millet evidence from Europe contributes to a comprehensive record of early millet findings from Europe. Also, my simulation exercise of millet impressions, which has challenged previous identification criteria of millet impressions, provides invaluable reference for future work. My case study of Usatovo millet impressions re-examination confirms that there are indeed millet-dimensioned 'voids' on Usatovo materials (3500-2900 BC) though details are lacking for species identification. I have also put the two patterns of pottery and millet into a vertical (historical) context by deconstructing 'hyper-diffusionism', 'Eurocentrism' and Andersson's hypothesis, adding to the collective work in the field of archaeological history across the past hundred years.

Thesis (M.S.)--University of Michigan, 1958.

It is the intent of this study to investigate an aspect of the accuracy of first impressions and the stability of attitudes formed on the basis of these impressions. The study of first impressions and their influence on behavior is one aspect of the general topic of person perception.

Abstract Introduction: Patients with numerous crowns and bridges are at risk of developing secondary caries on cervical margins of the crowns. This recurrent decay accounts for 60% of the reasons for the replacement of restorations. Detection and treatment of subclinical lesions is important to prevent cavitation. An alginate impression material has been used to locate cariogenic bacteria in established carious lesions. Aims: An alginate impression technique was used to assess the level of Streptococcus mutans and Lactobacilli on the crown margins of the teeth of the restored group and control subjects. Conventional caries activity tests were also used to compare these two groups. Methods: Twenty control group subjects with no crowns and a mean DMFS of 16 and 20 the restored group patients with at least 10 crowns and a mean DMFS of 129 were included in the study. Impressions were taken with a hydrocolloid material mixed with culture broth, incubated and examined for the presence of S. mutans and Lactobacilli on the cervical margins. The results were compared using the two-sample t-test, chi-squared test and a generalized logistic regression analysis. Results: More S. mutans and Lactobacilli were cultured on impressions of the restored group than the control patients (p=0.01 and 0.002). A higher proportion of patients in the restored group had high concentrations of S. mutans and Lactobacilli on their teeth than subjects in the control group (p < 0.001). In the restored group, sixty six per cent of teeth in the posterior and 48% in the anterior segment were crowns. S. mutans and Lactobacilli were found in higher concentrations on the posterior than the anterior teeth of the restored group patients than the control patients (p = 0.016 and 0.047). Furthermore, more Lactobacilli were cultured from the saliva of the restored group than control subjects while the buffering capacity of plaque and the ability of saliva to neutralize acids were lower in the restored group than control group subjects. Conclusion: The impression technique showed that S. mutans and Lactobacilli accumulated in the posterior of the mouth and were associated with crowns indicating these particular sites are at risk.