9 research outputs found
Clinical evaluation of composite and compomer restorations in primary teeth: 24-month results
Purpose: This split-mouth, blind study evaluated the clinical performance of Dyract AP, F2000, and Heliomolar placed in primary molars of 30 children (mean age, 6 years and 2 months). Materials and methods: From a total of 79 restorations accomplished, 27 were built with Heliomolar (18 Class I, and 9 Class II), 30 were with F2000 (21 Class I and 9 Class II), and 22 were built with Dyract AP (14 Class I and 8 Class II). All of teeth restored had primary caries lesions. At 6, 12, 18 and 24 months, 60 restorations (75%) were evaluated using USPHS criteria for: color match (CM), marginal adaptation (MA), marginal discoloration (MD), anatomic form (AF) and secondary caries (SC) by three calibrated operators. The Alpha+ Bravo score percentage was considered as clinical success. The data were subjected to statistical analysis by Mann-Whitney and Kruskal-Wallis tests (p<0.05). Results: Heliomolar showed the smallest success clinical at 12 months for marginal adaptation and secondary caries, and at 18 months for marginal discoloration. Regarding color match and anatomic form, no significant differences were found among the groups at each evaluation period. When materials were compared, Heliomolar did not show a significant difference among the evaluated periods for any criteria, remaining with the lowest scores. Significant differences were observed at 12 months for F2000 (marginal adaptation), and at 24 months for Dyract AP (marginal discoloration and secondary caries). and for F2000 (color match and marginal discoloration). Conclusions: It was concluded that Dyract AP and F2000 showed the best clinical performance over 24 month-evaluations for marginal discoloration and secondary caries, and color match and marginal adaptation, respectively. The use of the resin composite Heliomolar in Class I/II restorations in primary molars should be carefully considered. (C) 2005 Elsevier Ltd. All rights reserved.34638138
Mercury sink in Amazon rainforest: soil geochemical data from the Tapajos National Forest, Brazil
Prediction of soil nutrient content via pXRF spectrometry and its spatial variation in a highly variable tropical area
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Clinical standards for the assessment, management and rehabilitation of post-TB lung disease
BACKGROUND: Increasing evidence suggests that post-TB lung disease (PTLD) causes significant morbidity and mortality. The aim of these clinical standards is to provide guidance on the assessment and management of PTLD and the implementation of pulmonary rehabilitation (PR).METHODS: A panel of global experts in the field of TB care and PR was identified; 62 participated in a Delphi process. A 5-point Likert scale was used to score the initial ideas for standards and after several rounds of revision the document was approved (with 100% agreement).RESULTS: Five clinical standards were defined: Standard 1, to assess patients at the end of TB treatment for PTLD (with adaptation for children and specific settings/situations); Standard 2, to identify patients with PTLD for PR; Standard 3, tailoring the PR programme to patient needs and the local setting; Standard 4, to evaluate the effectiveness of PR; and Standard 5, to conduct education and counselling. Standard 6 addresses public health aspects of PTLD and outcomes due to PR.CONCLUSION: This is the first consensus-based set of Clinical Standards for PTLD. Our aim is to improve patient care and quality of life by guiding clinicians, programme managers and public health officers in planning and implementing adequate measures to assess and manage PTLD
Ultrastructural analysis of apoptosis and autophagy in the midgut epithelium of Piscicola geometra (Annelida, Hirudinida) after blood feeding
Overview of the Mycorrhizal Fungi in South America
The advances in plant cataloging and the increase of studies on mycorrhiza in South America (SA) have led to the compilation of information to better understand the native ecosystems and their constraints. Selected environments ranging from natural to anthropized ecosystems were analyzed according to their fungal-endophyte-associations and fungal-symbionts occurrence in relation to relevant physical-chemical properties of soils of the principal biomes in SA. Considering conservation units, no National Park is under continuous research in SA and few ones have been investigated for mycorrhizal symbioses. Ectomycorrhizas, with scant host-tree species in SA, are also investigated in Argentina and Chile forestry and mostly in exotic trees in Brazil. The study of the mycorrhizas and mycorrhizal fungi ecology and their response to global change, which is urgently recommended, is still incipient. Further, the publication revisions showed that Brazil, Argentina, Chile, Venezuela, and Ecuador are the countries with more published reports. Studies on mycorrhizas have developed largely; however, most of them were concerned with diversity and morphology, while the applications of mycorrhizas in environmental issues are still limited. The cooperative work between researchers from the Northern Hemisphere and SA could lead to greater advances on the quick and improved knowledge of the wonderful SA ecosystems and their mycorrhizas. This chapter revises and discusses the advances in mycorrhizal fungi understanding drawing on recent research.Fil: Lugo, MĂłnica Alejandra. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones BiolĂłgicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias FĂsico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones BiolĂłgicas de San Luis; Argentina. Universidad Nacional de San Luis. Facultad de QuĂmica, BioquĂmica y Farmacia. Departamento de BioquĂmica y Ciencias BiolĂłgicas; ArgentinaFil: Pagano, Marcela Claudia. Universidade Federal de Minas Gerais; Brasi