El mercado vitivinícola mundial y el flujo de inversión extranjera a Chile

Incluye Bibliografía

Políticas efectivas para atraer inversión extranjera directa en América Latina y el Caribe

Incluye Bibliografía

Capital de riesgo y mecanismos financieros de apoyo a la innovación en Brasil y Chile

Incluye Bibliografía

Proyecciones latinoamericanas 2000-2001

Incluye Bibliografía

La economía argentina entre la gran guerra y la gran depresión

Incluye Bibliografía

Políticas de competencia y de regulación en el Istmo Centroamericano

Incluye Bibliografía

El comercio internacional de servicios de salud en México: fortalezas, oportunidades, debilidades y amenazas

Incluye Bibliografía

La industria maquiladora electrónica en la frontera norte de México y el medio ambiente

Incluye Bibliografía

Enamel remineralization by fluoride-releasing materials: Proposal of a pH-cycling model

This study proposes a pH-cycling model for verifying the dose-response relationship in fluoride-releasing materials on remineralization in vitro. Sixty bovine enamel blocks were selected for the surface microhardness test (SMH 1). Artificial caries lesions were induced and surface microhardness test (SMH 2) was performed. Forty-eight specimens were prepared with Z 100, Fluroshield, Vitremer and Vitremer 1/4 diluted - powder/liquid, and subjected to a pH-cycling model to promote remineralization. After pH-cycling, final surface microhardness (SMH 3) was assessed to calculate percent recovery of surface microhardness (%SMH R). Fluoride present in enamel (μg F/mm 3) and in the pH-cycling solutions (μg F) was measured. Cross-sectional microhardness was used to calculate mineral content (ΔZ). There was no significant difference between Z 100 and control groups on analysis performed on - %SMH R, ΔZ, μ F and μ F/mm 3 (p>0.05). Results showed a positive correlation between %SMH R and μg F/mm 3 (r=0.9770; p=0.004), %SMH R and μg F (r=0.9939; p=0.0000001), DZ and μg F/mm 3 (r=0.9853; p=0.0002), ΔZ and μg F (r=0.9975; p=0.0000001) and between μg F/mm 3 and μg F (r=0.9819; p=0.001). The pH-cycling model proposed was able to verify in vitro dose-response relationship of fluoride-releasing materials on remineralization.

Análise da dieta e condição de saúde bucal em pacientes gestantes

Objectve: To perform a critical analysis of the diet record model adopted, to evaluate the cariogenicity of the maternal diet, and the incidence of dental caries in pregnant women treated at a prevent on clinic in an undergraduate dental course. Method: A cross-sectional study was performed with consultations to the database of the clinic and review of patients' charts and diet records. The sample was calculated and 205 patents were randomly selected. Bivariate statistical analysis was done at a significance level of 5% (α=0.05), using the statistical soft wares Epi Info versão 3.2, GraphPad Instat 3.6 and BioEstat. Results: The analysis of the diet records showed that 68.8% of the pregnant women presented a cariogenic diet, with high frequency of ingest on of fermentable carbon hydrates, mainly sucrose, with liquid consistency, and preferably consumed between the main meals. There was higher trend of the pregnant women mentioning a low frequency of carbon hydrate ingestion during the interview, while registering a diet rich of these components in their diet records (p<0.0001). The mean DMFT of the patients was 13.9 ± 5.4. There was no statistically significant association between diet and oral health variables (p>0.05). Conclusion: The diet record was proven an effective and valid method, if correctly employed. The prevalence of dental caries in the group of pregnant women was high and, although more than half of the sample presented a cariogenic diet, a significant association between diet and co-factors was not found.

Microfinanzas en Centroamérica: los avances y desafíos

Incluye Bibliografía

Análisis de situación y estado de los sistemas de salud de países del Caribe

Incluye Bibliografía

Políticas de financiamiento de las empresas de menor tamaño: experiencias recientes en América Latina

Incluye Bibliografía

Clase media y política fiscal en América Latina

Incluye bibliografia

Política tributaria y protección del medio ambiente: imposición sobre vehículos en América Latina

Incluye bibliografía