Ameloblastic fibro-odontoma : a case report

Ameloblastic fibro-odontoma (AFO) is a rare, benign, slow-growing odontogenic tumor, generally asymptomatic and more prevalent in children and adolescents. We report a case of AFO in the mandible of an eight-yearold Caucasian male patient, and review the literature. Intraoral examination revealed a swelling extending from the deciduous second molar to the retromolar triangle, covered with normal mucosa. A panoramic radiograph showed a large, well-demarcated radiolucency with radiopaque areas. The provisional diagnosis was of AFO, and so an incisional biopsy was performed. Histologically, the lesion was composed of connective tissue resembling the dental papilla, with epithelial strands or islands, as well as denticles and amorphous masses of enamel and dentin consistent with a diagnosis of AFO. Surgical excision and curettage of the lesion were performed. The patient has been monitored for eight years and the lesion has not recurred

Café: (re)conquista dos mercados

Bibliografia: p. 54-55O artigo analisa o sistema agroindustrial do café sob vários ângulos, com ênfase nas novas tecnologias de plantio, produção, tratamento pós-colheita e comercialização: o comportamento do mercado, destacando o de cafés especiais, os principais países produtores e consumidores; os aspectos agronômicos que possibilitam o aumento da produtividade e a melhora no produto final; o cerrado mineiro e a região de Barreiras na Bahia, com novas fronteiras de produção do café arábica e a introdução do café robusta em São Paulo e no sul da Bahia; as estratégias de diferenção de produtos nos mercados nacional e internacional e as barreiras impostas às exportações brasileiras; o processo de desregulamentação na década de 90 e a saída do Estado do controle do setor; e as perspectivas para o aumento da participação do Brasil no mercado mundial tanto de café commodity quanto de produtos industrializados

Agricultura orgânica: quando o passado é futuro

Bibliografia: p. 33-34Apresenta-se a agricultura orgânica como uma retomada do uso de antigas práticas agrícolas, porém adaptando-as às mais modernas tecnologias de produção agropecuária com o objetivo de aumentar a produtividade e causar o mínimo de interferência nos ecossistemas, além de ser uma das alternativas para viabilizar a pequena propriedade. O estudo também procura identificar e analisar os principais entraves para o desenvolvimento do setor, como custos, crédito, embalagem, certificação, além de apresentar, de forma esquemática, o relacionamento entre os principais agentes da cadeia produtiva

Impact of diabetes mellitus on arterial stiffness in a representative sample of an urban Brazilian population

Background\ud Independent of other cardiovascular (CV) risk factors, increased arterial stiffness has been established as a predictor of morbidity and mortality. The main aim of this study was to investigate the impact of diabetes on arterial stiffness in a representative sample of an urban Brazilian population plus Amerindians.\ud \ud Methods\ud A total of 1,415 individuals from the general population were randomly selected plus 588 Amerindians from a native community in Brazil. In addition, a sub-sample of 380 individuals from the general population had 5-year follow-up data. Pulse wave velocity (PWV) was measured with a non-invasive automatic device (Complior, Colson; Garges les Gonesses, France) and increased arterial stiffness was defined as PWV ≥ 12 m/s.\ud \ud Results\ud In the overall group, diabetic individuals had higher frequencies of increased arterial stiffness and hypertension. They also had higher values of PWV, body mass index, total cholesterol, triglycerides, systolic and diastolic blood pressures compared to non-diabetic individuals (p < 0.01). In an analysis stratified by hypertension, PWV values and increased arterial stiffness frequency were higher in diabetic individuals in both groups (hypertensive and non-hypertensive) (p < 0.05). Furthermore, higher risk for increased arterial stiffness was observed in the diabetic individuals from the overall group (OR = 2.27; CI = 1.47-3.52, p < 0.001) and from the hypertensive group (OR = 2.70; CI = 1.58-4.75, p < 0.001), adjusted for covariates. Regarding the ethnic stratification, diabetic individuals from Amerindian, White, and Mulatto (mixed-race) groups had higher PWV values and a greater frequency of increased arterial stiffness compared to non-diabetic individuals. Both diabetic and non-diabetic individuals had higher PWV values after 5 years. There was no significant difference in the 5-year PWV progression in diabetic compared to non-diabetic individuals.\ud \ud Conclusions\ud These results confirm, in a sample of Brazilian population, that the presence of diabetes is associated with increased arterial stiffness and it may contribute in part to increased cardiovascular risk in diabetic patients.PCJL Santos is the recipient of a fellowship from FAPESP, Proc. 2010-17465-8, Brazil. The technical assistance of the Laboratory of Genetics and Molecular Cardiology group, Heart Institute group is gratefully acknowledged

Análise quantitativa da desmineralização do esmalte dental submetido à ação de dentifrícios fluoretados

The dental caries is a multifactorial illness, characterized as a dynamic process, originated from the disequilibrium in the phenomena of demineralization and re-mineralization. Several studies have demonstrated that the prevalence of caries in the majority of the countries have diminished in last the two decades due to implantation of public health programs, to the use of fluorine through the fluoridate water supplying and the consumption of fluoridate dentifrices. The fluoride contained in the dentifrices is capable to R. Ci. méd. biol., Salvador, v. 4, n. 3, p. 225-234, set./dez. 2005 233 reduce the mineral loss of the enamel of teeth and to activate the ionic replacement in units with white spots injuries and incipient injuries of caries. This data justify the present study that aimed to determine, in vitro, the human dental enamel protection degree by fluoride; in the forms of sodium fluoride (NaF) and sodium mono-fluoride- phosphate of (MFP), contained in seven dentifrice-test (Colgate Anti-caries Protection (DT1), Trends (DT2), Prevent Anti-placa (DT3), Colgate Anti- tártaro (DT4), Phillips 2 with Fluorine (DT5), Gessy Crystal Juá and Mint (DT6) and Colgate Anti-caries Protection Gel (DT7)) comparativily to the action of the control- dentifrice, without fluoride, Phillips (DC), due to its pH fall to critical levels. The taxes of calcium and phosphate released from the enamel, previously treated by the dentifrices, which had been determined through the technique of spectrometry of atomic emission with plasma connected inductively . The findings had shown the protective power of these products, indicating the appropriate control by the industrial quality. It was also evidenced, greater protection of the enamel for the dentifrices containing the fluoride of sodium in relation to those containing monofluorphosphate of sodium and a negative correlation between the taxes of calcium and phosphate released from the human enamel.A cárie dental é uma doença multifatorial, caracterizada como um processo dinâmico, originado pelo desequilíbrio nos fenômenos de desmineralização e remineralização. Diversos estudos têm demonstrado que a prevalência de cárie, na maioria dos países, diminuiu nas últimas duas décadas, devido à implementação de programas de saúde pública, ao uso do flúor através da fluoretação das águas de abastecimento e o uso de dentifrícios fluoretados. O flúor contido nos dentifrícios é capaz de reduzir a perda mineral do esmalte dos dentes hígidos e ativar a reposição iônica em unidades com lesões de manchas brancas e com lesões incipientes de cárie. Esses dados justificam o presente estudo, que teve por objetivo determinar, in vitro, o grau de proteção do esmalte dentário humano pelo flúor, nas formas de fluoreto de sódio (NaF) e monofluorfosfato de sódio (MFP), contidos em sete dentifrícios-teste (Colgate Proteção Anticáries (DT1), Trends (DT2), Prevent Antiplaca (DT3), Colgate Antitártaro (DT4), Phillips 2 com Flúor (DT5), Gessy Cristal Juá e Hortelã (DT6) e Colgate Proteção Anticáries Gel (DT7), comparativamente à ação do dentifrício-controle, sem fluoreto, Phillips (DC), frente à queda do pH aos níveis críticos. As taxas do cálcio e do fosfato liberados do esmalte, previamente tratado pelos dentifrícios, foram determinadas através da técnica de espectrometria de emissão atômica, com plasma indutivamente acoplado. Os resultados encontrados revelaram o poder protetor desses produtos, indicando o adequado controle da qualidade industrial. Constatou-se, também, maior proteção do esmalte pelos dentifrícios que contêm fluoreto de sódio, em relação àqueles que continham monofluorfosfato de sódio, e uma correlação negativa entre as taxas do cálcio e do fosfato liberados do esmalte dental humano