Thesis (Ph. D.)--University of Missouri-Columbia, 2004. / Typescript. Vita. Includes bibliographical references (leaves 118-122). Also available on the Internet.

Thesis (M.S.)--University of Michigan, 1974.

Thesis (doctoral)--Karolinska Institutet, Stockholm, 1983. / Extra t.p. with thesis statement inserted. Includes the author's seven published papers. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.D.S.)--University of Hong Kong, 2003. / Also available in print.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1963. / Typescript. Includes: Thermodynamic properties of ions at high temperatures / John W. Green, Duncan E. Poland, John L. Margrave. (Wright-Patterson Air Force Base, Ohio : Aeronautical Research Laboratory, Office of Aerospace Research, United States Air Force, 1961) -- Ideal gas thermodynamic functions of some selected elements / D.E. Poland, J.W. Green and J.L. Margrave. Reprinted from Journal of chemical & engineering data, v. 7, no. 3 (July 1962), p. 389-390 -- Corrected optical pyrometer readings / D.E. Poland, J.W. Green and J.L. Margrave. National Bureau of Standards monograph ; 30 (Washington, 1961), 74 p. -- Absorption spectrum of chlorine in the vacuum ultraviolet / Raymond P. Iczkowski, Raymond P., John L. Margrave and John W. Green. Reprinted from Journal of chemical physics, v. 33, no. 4 (Oct. 1960), p. 1261-1262. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

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Made available in DSpace on 2014-06-11T19:33:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-12-20Bitstream added on 2014-06-13T21:05:39Z : No. of bitstreams: 1 silva_kg_dr_araca.pdf: 1119234 bytes, checksum: 5618d5d8828102cf1192a2ce0a173ef5 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / O objetivo desse estudo foi avaliar in situ o potencial remineralizador de selantes que contenham fosfato de cálcio amorfo e/ou fluoreto com lesão artificial de cárie em esmalte de superfície lisa. Dez voluntários participaram desse estudo triplo cego com duração de 5 dias para cada grupo (esmalte desmineralizado + Fluroshield, esmalte desmineralizado + Aegis (ACP), esmalte desmineralizado + Fluoreto (experimental), esmalte desmineralizado + ACP + Fluoreto (experimental) e esmalte desmineralizado – Controle) e intervalo de 7 dias entre eles. Dez dias antes do início e durante todo o experimento os voluntários utilizaram dentifrício não fluoretado. Após o período experimental, foram avaliadas a porcentagem de recuperação de microdureza de superfície (%MDS), recuperação da área mineral integrada (_Z) e determinada a concentração de fluoreto (μg F/mm3), cálcio (μg Ca/mm3) e fósforo (μg P/mm3) presentes no esmalte. Os dados obtidos da %MDS e _Z foram submetidos à Análise de Variância seguida do teste de Tukey, e os do fluoreto, cálcio e fósforo foram submetidos ao teste de Kruskal-Wallis (p<0,05). Todas as variáveis foram submetidas à análise de regressão e ajustadas de acordo com a tendência. Os grupos de materiais com fluoreto e/ou ACP apresentaram maior capacidade remineralizadora (%MDS e _Z) quando comparado com o grupo Controle. O grupo com apenas ACP apresentou resultado melhor ou semelhante quando comparado com os outros grupos e a associação do ACP e fluoreto não mostrou ser mais eficiente. A lesão de cárie mostrou-se mais remineralizada na distância de 150 ìm quando comparada com a de 600 ìm para os valores de %MDS. As concentrações de fluoreto, cálcio e fósforo presentes no esmalte variaram de acordo com o grupo analisado. Entre as variáveis avaliadas, somente foi verificada correlação entre %MDS e _Z. / The purpose of this study was to evaluate in situ the remineralizing potential of sealants containing amorphous calcium phosphate and/or fluoride in artificially induced carious lesions on smooth enamel surfaces. Ten volunteers took part in this triple-blind study, which had the duration of 5 days for each group: demineralized enamel + Fluroshield; demineralized enamel + Aegis (ACP); demineralized enamel + Fluoride (experimental); demineralized enamel + ACP + Fluoride (experimental) and demineralized enamel (Control). A wash-out period of 7 days was allowed between the treatments. Ten days before and during the whole experiment the volunteers used a non-fluoridated dentifrice. After the experimental period, the percentage recovery of surface microhardness (%RSM) and the recovery of integrated mineral area (HZ) were evaluated. The concentration of fluoride (Jg F/mm3), calcium (Jg Ca/mm3) and phosphorous (Jg P/mm3) present in enamel was also determined. Data obtained from %RSM and HZ were submitted to Analysis of Variance and Tukey’s test. Data from fluoride, calcium and phosphorous concentration were submitted to Kruskal-Wallis test. Significance level was set at 5%. All variables were also evaluated by regression analysis and adjusted according to the tendency. The groups with materials containing fluoride and/or ACP presented a higher remineralizing capacity (%RSM and HZ) than the Control group. The group with material containing only ACP showed a better or similar result compared to the other groups. The association between ACP and fluoride did not show a greater efficacy. For %RSM, the 150-Jm distance showed a higher remineralization of the artificially induced carious lesions compared to the 600-Jm distance. The concentrations of fluoride, calcium and phosphorous present in enamel varied according to the group.

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