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Id: biblio-1051261
Autor: Massoud, Ramona; Hadiani, Mohammad Rasoul; Hamzehlou, Pegah; Khosravi-Darani, Kianoush.
Título: Bioremediation of heavy metals in food industry: application of Saccharomyces cerevisiae
Fonte: Electron. j. biotechnol;37:56-60, Jan. 2019. tab.
Idioma: en.
Projeto: Shahid Beheshti University of Medical Sciences.
Resumo: Heavy metals are natural elements in the Earth's crust that can enter human food through industrial or agricultural processing, in the form of fertilizers and pesticides. These elements are not biodegradable. Some heavy metals are known as pollutants and are toxic, and their bioaccumulation in plant and animal tissues can cause undesirable effects for humans; therefore, their amount in water and food should always be under control. The aim of this study is to investigate the conditions for the bioremediation of heavy metals in foods. Various physical, chemical, and biological methods have been used to reduce the heavy metal content in the environment. During the last decades, bioremediation methods using plants and microorganisms have created interest to researchers for their advantages such as being more specific and environmentally friendly. The main pollutant elements in foods and beverages are lead, cadmium, arsenic, and mercury, which have their own permissible limits. Among the microorganisms that are capable of bioremediation of heavy metals, Saccharomyces cerevisiae is an interesting choice for its special characteristics and being safe for humans, which make it quite common and useful in the food industry. Its mass production as the byproduct of the fermentation industry and the low cost of culture media are the other advantages. The ability of this yeast to remove an individual separated element has also been widely investigated. In countries with high heavy metal pollution in wheat, the use of S. cerevisiae is a native solution for overcoming the problem of solution. This article summarizes the main conditions for heavy metal absorption by S. cerevisiae.
Descritores: Saccharomyces cerevisiae/metabolismo
Biodegradação Ambiental
Indústria Alimentícia
Metais Pesados/metabolismo
-Arsênio
Leveduras
Cádmio
Remoção de Contaminantes
Absorção
Bioacumulação
Chumbo
Mercúrio
Responsável: CL1.1 - Biblioteca Central


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Id: lil-635755 LILACS-Express
Autor: Ruiz Córdoba, Jairo; Carmona, Rosaura; Gómez, Gabriel Jaime; Muñoz, José Alejandro.
Título: Tecnología limpia aplicada al tratamiento y aprovechamiento de residuos de amalgama dental / Cleantechnology applied to the treatment and management of dental amalgam residues
Fonte: Rev. luna azul;(26):80-86, jun. 2008. ilus, tab.
Idioma: es.
Resumo: A la problemática mundial sobre la contaminación del medio ambiente por las actividades humanas donde se utiliza el mercurio, se suma la contaminación generada por los residuos de amalgama dental cuando estos se disponen de manera inadecuada. En Colombia, a pesar de haber una normatividad clara al respecto, subsiste esta problemática cuando las instituciones prestadoras de servicios en salud oral arrojan por la alcantarilla, incineran o entierran los residuos de amalgama que producen, como forma de disponerlos. Esto se debe a que muchas veces dicha normatividad se desconoce o se aplica de manera parcial o equivocada. Como solución a esta problemática, la Universidad de Antioquia, a través de los grupos de investigación Ciencia y Tecnología Biomédica (CTB), Materiales Preciosos (MAPRE) y de Investigaciones Pirometalúrgicas y de Materiales (GIPIMME), y la empresa productora y comercializadora de insumos odontológicos New Stetic S.A., diseñaron e implementaron un proceso eco-eficiente de tratamiento de residuos de amalgama, con los objetivos de, primero, evitar una disposición inadecuada que impacte negativamente el medio ambiente y, segundo, aprovechar los metales recuperados por medio de su reintegro a la cadena productiva. Las etapas del proceso consisten en: la recuperación pirometalúrgica (altas temperaturas) del mercurio en un destilador hermético llamado Retorta y la recuperación hidrometalúrgica (recuperación en medio acuoso) del resto de los metales constituyentes. Esto permite obtener, de manera eco-eficiente y auto-sostenible, cada metal que a su vez pueden pasar a un proceso de refinación para darle valor agregado y ser reutilizado.

The world problem regarding the environmental pollution due to human activities where mercury is used increases the contamination generated by the dental amalgam scraps when they are inadequately disposed. Although Colombia has clear regulations regarding this issue, the problem subsists when oral health service institutions discard down the drainpipe, incinerate or bury the amalgam scraps that they produce as a disposal method. This occurs because the regulations are unknown or because, many times, they are partially or incorrectly applied. As a solution to this situation, the Universidad de Antioquia through the research groups: Science and Biomedical Technology, Precious Materials and Pyrometallurgical and Material Researches, and the dental supplies manufacturing and marketing company New Stetic S.A., developed and implemented a eco-efficient recovery process for amalgam wastes in order to prevent any incorrect disposal that negatively impacts the environment, and to take advantage of the recovered metals by returning them to the production line. The process stages include the pyrometallurgical mercury recovery (at high temperatures) using a hermetical distiller called Retorta, and the hydrometallurgical recovery (selective recovery in watery media) of the rest of the constituent metals. The latter permits the obtainment, in an eco-efficient and self-sustainable manner, of each metal which can be taken through a refining process to be reused.
Descritores: Amálgama Dentário
-Tecnologia Biomédica
Materiais
Mercúrio
Limites: Humanos
Tipo de Publ: Artigo Clássico
Responsável: CO54.1 - Centro de Biblioteca e Información Científica


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Id: lil-478303
Autor: Oikawa, Teiichi.
Título: Avaliação dos teores de mercúrio na urina dos graduandos de odontologia / Evaluation mercury meaning in urine of dentistry undergraduate students
Fonte: Rev. para. med = Rev. Para. Med. (Impr.);21(3):25-29, jul.-set. 2007. tab, graf.
Idioma: pt.
Resumo: Objetivo: Avaliar os teores de mercúrio na urina dos graduandos de Odontologia do Centro de Ensino Superior do Estado do Pará (CESUPA) em 2002. Método: Avaliados os teores de mercúrio na urina de 20 alunos, através da espectofotometria de absorção atômica. Resultados: Análise estatística constatou que não houve indícios de exposição ocupacional; 80% dos alunos estavam com teores de mercúrio dentro dos limites de normalidade (10µg/L) e apenas 4 encontravam-se acima do limite de normalidade, porém, dentro do limite máximo tolerado (50µg/L). Conclusão: Os teores de mercúrio na urina de 80% dos graduandos de Odontologia encontram-se dentro do limite de normalidade (10µg/L) e, 20% dentro do limite biológico máximo tolerado (50µg/L) preconizado pela OMS, de acordo com a NR7.

Objective: To avaliate mercury meaning in urine of dentistry undergraduate students of "Centro de Ensino Superior do Estado do Pará" (CESUPA) in 2002. Method: There were analyzed the mercury meaning in the urine of 20 students using absorption atomic spectophotometry. Results: The statistic analysis results showed that there were no occupational exposition and, 80% of students had the values lower than the limits considered as normal (10µg/L) and, only 4 students had these values higher than the normal parameters, but in the maximum limit tolerable (50µg/L). Conclusion: The mercury meaning in the urine of 80% dentistry undergraduate students of CESUPA were in normal levels and, 20% were in the maximum limit tolerable as praised by World Health Organization (WHO),according to RN7.
Descritores: Amálgama Dentário
Estudantes de Odontologia
Mercúrio/efeitos adversos
Mercúrio/urina
Limites: Humanos
Masculino
Feminino
Adulto
Responsável: BR3.1 - Biblioteca Central


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Id: lil-447167
Autor: Sá, Andréa Lima de; Herculano, Anderson Manoel; Pinheiro, Maria da Conceição; Silveira, Luiz Carlos de Lima; Nascimento, José Luiz Martins do; Crespo-López, Maria Elena.
Título: Exposição humana ao mercúrio na região oeste do Estado o Pará / Human Exposure to mercury in the west region of state of Pará
Fonte: Rev. para. med = Rev. Para. Med. (Impr.);20(1):19-25, jan.-mar. 2006. ilus, graf.
Idioma: pt.
Resumo: Objetivo: realizar um levantamento da literatura existente sobre os níveis de exposição mercurial das populações da região oeste do Estado do Pará. Método: revisão bibliográfica pertinente ao objetivo. Conclusão: os níveis do mercúrio detectados por diferentes trabalhos em populações expostas da bacia do Rio Tapajós foram elevados em certas comunidades (São Luís do Tapajós, Barreiras e Rainha), no entanto, apresentando uma diminuição gradual com o passar dos anos. Esses mesmos dados revelam uma exposição ambiental ao mercúrio de comunidades vizinhas com valores significativos. A exposição mercurial pode ser perigosa, por gerar níveis de intoxicação que estão acima do limite determinado pela Organização Mundial de Saúde, podendo desencadear neurotoxicidade, perda do controle motor entre outros problemas de saúde
Descritores: Intoxicação do Sistema Nervoso por Mercúrio
Intoxicação por Mercúrio
Mercúrio
Limites: Humanos
Responsável: BR3.1 - Biblioteca Central


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Id: biblio-1135560
Autor: Al-Khafaji, Thulficar Ghali Hameed; Al-Timimi, Aymen Hameed Orabi; Abbas, Ahmed Saadoon; Alanz, Mays Ali Azeez; Murshedi, Saja Jawad Kadhim; Alam, Mohammad Khursheed.
Título: Mercury Loss From Dental Amalgam Fillings
Fonte: Pesqui. bras. odontopediatria clín. integr;20:e5267, 2020. tab.
Idioma: en.
Resumo: Abstract Objective: To compare the amount of mercury in new and old dental amalgam restorations. Material and Methods: This study analyzed twenty samples of dental amalgam restorations, dividing into two groups. Group 1 consisted of samples of new dental amalgam restoration (n=10) and group 2 consisted of samples of old dental amalgam restoration (5-years old) (n=10). In each group, the mercury involved in the dental amalgam restoration was calculated using the cloud point extraction (CPE) method. The new dental amalgam restorations are taken from the patients' mouth after condensation and analyzed directly after setting. The old dental amalgam restorations are removed from the patients' mouth, after 5 years of use by the patients, and then they are analyzed. The independent-samples t-test was used to analyze the differences (p<0.05). Results: For new amalgam restorations, the mean of mercury was 0.1281 µg/mL, while for old restorations it was 0.1029 µg/mL. There was a significant difference between the new and old amalgam restorations in the amount of mercury available (p<0.001). Conclusion: There is a significant loss of mercury over a five years period in the patient mouth.
Descritores: Ligas Dentárias/química
Amálgama Dentário
Materiais Dentários
Mercúrio
-Iraque
Limites: Humanos
Tipo de Publ: Estudo Comparativo
Responsável: BR1264.1 - Biblioteca Setorial Prof Alberto M Campos


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Id: biblio-1253154
Autor: Perdomo Salinas, Alma Patricia; Perdomo Escobar, Marvin Gustavo.
Título: Implicaciones acerca de los beneficios y/o consecuencias del empleo el mercurio en odontología / Implications about the benefits and / or consequences of the use of mercury in dentistry.
Fonte: San Salvador; s.n; 2004. 107 p. Ilus.
Idioma: es.
Tese: Apresentada a Universidad de El Salvador para obtenção do grau de Doctor.
Resumo: Hace muchos años comenzó la utilización del mercurio como un componente en un sin número de áreas que involucraron desde efectos afrodisiacos, hasta llegar al campo de la Odontología en tiempos antes de Cristo. Dicho metal comenzó a tener mucho auge debido a las propiedades que se creían que éste poseía, pero con el correr del tiempo, comenzó a observarse una serie de reacciones adversas en quienes utilizaban éste metal, cuando permanecían en íntimo contacto. Es por eso que muchas instituciones y organismos comenzaron una serie de investigaciones en defensa de la salud y el ambiente, y se comenzó a difundir artículos y publicaciones realizadas con o sin fundamento científico, y en muchos casos con fines comerciales. Se sabe que el mercurio junto con otros metales (plata, estaño, cobre y zinc), dan como resultado la amalgama dental. Dicho material restaurador ha sido utilizado por sin número personas alrededor del mundo por más de 150 años; así de antigua es también la preocupación por la presencia del mercurio en ésta; actualmente continúa utilizándose debido a factores muy importantes que en nuestro país lo hacen uno de los materiales restauradores de primer escoge. Dicho factores incluyen entre otras la durabilidad, bajo costo con respecto a otros materiales, la facilidad de manipulación y su uso tanto en niños como en adultos. Es por este motivo que se hace necesaria una recolección de información científica-comprobada que pueda generar un mejor criterio de los beneficios, implicaciones o complicaciones que puede generar el uso del metal en este campo, Paracelso en el siglo XV puntualizó el dilema básico con el que ahora se determina los efectos tóxicos del mercurio de la amalgama dental en los humanos: "todas los elementos son venenosos. No hay uno que no sea venenoso, la dosis correcta hace la diferencia entre un veneno y una cura"(1). Es a partir de esta afirmación que se pretende establecer cuál es la dosis que provoque una reacción de hipersensibilidad o toxicidad y cual no lo hace. Con esta investigación, se procurará aclarar las interrogantes existentes en relación al uso de este metal, como también diferenciar y conocer los compuestos de mercurio existentes, sus múltiples usos, y los que tienen más potencial tóxico, para que el clínico con un mayor criterio y conocimiento pueda ofrecer al paciente la seguridad de brindar un material restaurador que garantice la satisfacción del paciente.

Many years ago the use of mercury began as a component in a number of areas that involved everything from aphrodisiac effects, to the field of Dentistry in times before Christ. This metal began to have a great boom due to the properties that it was believed to possess, but with the passage of time, a series of adverse reactions began to be observed in those who used this metal, when they remained in intimate contact. That is why many institutions and organizations began a series of investigations in defense of health and the environment, and articles and publications made with or without scientific basis began to be disseminated, and in many cases for commercial purposes. Mercury along with other metals (silver, tin, copper, and zinc) are known to result in dental amalgam. This restorative material has been used by countless people around the world for more than 150 years; This is how old the concern about the presence of mercury is also; Currently it continues to be used due to very important factors that in our country make it one of the first choice restorative materials. These factors include, among others, durability, low cost compared to other materials, ease of handling and its use in both children and adults. It is for this reason that it is necessary to collect scientific-proven information that can generate a better criterion of the benefits, implications or complications that the use of metal can generate in this field.Paracelsus in the 15th century pointed out the basic dilemma with the which now determines the toxic effects of mercury from dental amalgam in humans: "all elements are poisonous. There is not one that is not poisonous, the correct dose makes the difference between a poison and a cure "(1). It is from this statement that it is intended to establish which is the dose that causes a hypersensitivity or toxicity reaction and which does not. With this research, an attempt will be made to clarify the existing questions in relation to the use of this metal, as well as to differentiate and know the existing mercury compounds, their multiple uses, and those with more toxic potential, so that the clinician with greater judgment and knowledge can offer the patient the security of providing a restorative material that guarantees patient satisfaction.
Descritores: Mercúrio
-Amálgama Dentário
Materiais Dentários
Odontologia
Intoxicação por Mercúrio
Responsável: SV2 - Departamento de Gobernanza y Gestión del Conocimiento


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Id: biblio-1093005
Autor: García, Juan Daniel Díaz; Arceo, Emmanuel.
Título: Renal damage associated with heavy metals: review work / Daño renal asociado a metales pesados: trabajo de revisión
Fonte: Rev. colomb. nefrol. (En línea);5(1):45-53, Jan.-June 2018. tab, graf.
Idioma: en.
Resumo: Abstract Catheter-associated infection is an entity with multiple complications, a condition that alters the quality of life of all patients Chronic kidney disease (CKD) represents an important health problem in the entire global population, where knowledge of the environmental factors associated with this disease is currently essential for its prevention. Several heavy metals are recognized, including Cadmium (Cd), Lead (Pb), Arsenic (As) and Mercury (Hg), which are clearly associated with renal damage and progression of CKD. Studies in animals and humans primarily demonstrate a clear association between exposure to these metals and the presence of chronic renal damage, where the pathophysiology of each of these metals is important in understanding the mechanism of renal damage. The present review aims to analyze the pathophysiology and clinical manifestations of the nephrotoxicity associated with these metals, as well as the different studies in both humans and animals that have been performed.

Resumen La enfermedad renal crónica (ERC) representa un importante problema de salud en todo el globo. Actualmente, es esencial para su prevención el conocimiento de los factores ambientales asociados con la enfermedad. Se reconocen diversos metales pesados, entre los que destacan el cadmio (Cd), plomo (Pb), arsénico (As) y mercurio (Hg), que están claramente asociados con la lesión renal y la progresión de la ERC. Estudios en animales y humanos demuestran, principalmente, una clara asociación entre la exposición a estos metales y la presencia de daño renal crónico, donde la fisiopatologia de cada uno de ellos es importante para entender el mecanismo de daño renal. La presente revisión tiene como objetivo analizar, tanto la fisiopatología y manifestaciones clínicas de la nefrotoxicidad asociada a dichos metales, como los diferentes estudios que se han realizado en humanos y animales.
Descritores: Metais Pesados
Insuficiência Renal Crônica
-Arsênio
Cádmio
Necrose Tubular Aguda
Chumbo
Mercúrio
Metais
Limites: Humanos
Masculino
Feminino
Tipo de Publ: Revisão
Responsável: CO661.9


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Id: biblio-1222928
Autor: Castro González, José Alejandro; Jurado Mejía, Karla Elena; Marinero de Castillo, Tania Stephanie; Vásquez Navarro, Fátima Dinorah Lourdes.
Título: Riesgo toxicológico ambiental y manipulación del mercurio en el consultorio odontológico de dos unidades comunitarias de salud familiar de San Salvador / Environmental toxicological risk and manipulation of mercury in the dental office of two community family health units in San Salvador.
Fonte: San Salvador; s.n; 2014. 31 p. Tab, Ilus.
Idioma: es.
Tese: Apresentada a Universidad de El Salvador para obtenção do grau de Doctor.
Resumo: Objetivo: Determinar el riesgo toxicológico derivado de la manipulación de mercurio, por el personal de las clínicas odontológicas de las Unidades Comunitarias de Salud Familiar de Mejicanos y Monserrat de San Salvador. Materiales y Métodos: El diseño corresponde a un estudio descriptivo transversal, utilizando una guía de observación y empleando el Método Colorimétrico en vapor frío; para determinar la presencia de vapores mercuriales, producidos durante el proceso de manipulación de la amalgama de plata como material restaurativo dental. Las observaciones y mediciones fueron efectuadas en diferentes horarios de la jornada laboral, en las Unidades Comunitarias de Salud familiar de Mejicanos y Monserrat; durante los meses de Septiembre y Octubre de 2013. Los resultados obtenidos, fueron ingresados a una base de datos y analizados por SPSS 1.8. Los resultados son presentados en tablas de distribución de frecuencias y contingencia Resultados: Al evaluar el manejo de los excedentes de mercurio, se realizó un total de doce guías de observación por cada Unidad Comunitaria de Salud Familiar. En la Unidad Comunitaria de Salud Familiar de Mejicanos se encontró en tres ocasiones, el recipiente con la tapadera enroscada y humedad en su interior. En cinco ocasiones se observó tapado inadecuadamente y siempre con humedad interior. En cuatro se encontró que utilizaban otro tipo de recipientes para el manejo de los excedentes. Con respecto a la cantidad de mercurio empleada durante cuatro semanas, para el consultorio de Mejicanos fue de 2.8 onzas y de 3.5 onzas en el de Monserrat. De un total de dieciséis mediciones, en ambas se encontraron tres valores por arriba del valor límite de 0.05 mg Hg/m³. Uno fue de 0.12 mg Hg /m³ y dos de 0.10 mg Hg/m³. Estos valores exceden al promedio de exposición al cual una persona puede estar expuesta (0.05 mg Hg/m³), sin que presente efectos adversos repetitivos, durante una jornada laboral de 40 horas semanales. Conclusiones: En tres de las dieciséis mediciones, se sobrepasó el límite de saturación de vapores de mercurio, permitido por la NIOSH (0.05 mg Hg /m³). En cuanto al manejo de los excedentes de mercurio, pudo comprobarse que en los consultorios, no se cumple con la Norma Técnica del Ministerio de Salud.

Objective: To determine the toxicological risks associated with handling mercury, by the staff of the dental clinics of the Community Family Health Units of (Unidades Comunitarias de Salud Familiar) Mejicanos and Monserrat of San Salvador. Materials and methods: The design was a descriptive study, using an observation guide and employing the colorimetric method using cold steam to determine the presence of mercury vapor produced during the handling process of silver amalgam as a dental restorative material. The observations and measurements were made at different times of the workday, in the Community Family Health Units of Mejicanos and Montserrat; during September and October 2013. The results obtained, were entered into a database and analyzed by SPSS 1.8. The results are presented in tables of frequency distribution and contingency. Results: In assessing the management of excess of mercury, a total of twelve observation guides were made for each Community Family Health Units (UCSF). In the UCSF of Mejicanos in three separate occasions the container was found with the lid screwed on and humidity in its interior. In five separate occasions the lid was found fastened inadequately and humidity was always found in the inside. Four were found that they utilized a different type of container for the handling of excess. In respect to the amount of mercury used during the four weeks period by the health clinic of Mejicanos the amount was 2.8 ounces, and 3.5 ounces for the health clinic of Montserrat A total of sixteen measurements were taken in total, in both clinics, three positive values were found (method colorimetric cold steam is limited to 0.05 mg Hg /m3 ) the first value of 0.12 mg Hg /m3 and two values of 0.10 mg Hg /m3 each. These values exceed 0.05 mg Hg /m3 which are the average exposure that a worker may be repeatedly exposed to, without adverse effect, over an 8- hour shift and a 40-hour workweek. Conclusions: In three of the sixteen measurements taken, the limit of saturation of mercury vapors allowed by NIOSH (0.05 mg Hg /m³) was exceeded. Regarding the handling of the excess of mercury, it was found that both clinics are not complying with the Technical Regulations of the Ministry of Health.
Descritores: Mercúrio
-Odontologia
El Salvador
Intoxicação por Mercúrio
Responsável: SV2 - Departamento de Gobernanza y Gestión del Conocimiento


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Id: biblio-1132234
Autor: Ryba, Andréa; Zanoelo, Everton Fernando; Lenzi, Marcelo Kaminski.
Título: Kinetics and Equilibrium of Mercury Sorption by Three Different Types of Live Algae
Fonte: Braz. arch. biol. technol;63:e20190091, 2020. tab, graf.
Idioma: en.
Resumo: Abstract The kinetics and equilibrium of experimental data of mercury (II) sorption using three different macrophytes E. crassipes, E. azurea and S. ariculata were analyzed. From the kinetic models used, the model 1, which considers the surface area of constant sorption, presents the coefficient of determination, R2, closer to the unit (0.97). Already, in the liquid phase, the best fit of the experimental data was obtained for model 2 (R2=0.96), which considers the variable surface area. The calculated values for the determination coefficients indicate that the Redlich-Peterson isotherm best describes the equilibrium (R2=0.79). The results show that the macrophyte S. ariculata surface area, which presented the highest adsorption potential (15.77x10-4m2.g-1), was far below those found in the best adsorbents. However, considering the large volume of adsorbent material required in an industrial plant and the low cost of the analyzed adsorbents, it is considered that the macrophytes investigated have a considerable potential for the removal of mercury from wastewater.
Descritores: Macrófitas
Equinodermos/efeitos dos fármacos
Mercúrio/farmacocinética
Modelos Biológicos
-Adsorção
Responsável: BR1.1 - BIREME


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Meyer, Armando
Câmara, Volney de Magalhäes
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Id: lil-744255
Autor: Silva, Ivisson Carneiro Medeiros da; Asmus, Carmen Ildes Rodrigues Froes; Campos, Reinaldo Calixto de; Davis, Rachel Hauser; Meyer, Armando; Câmara, Volney de Magalhães.
Título: Variação diária da exposição ao mercúrio entre assistentes e estagiários em um consultório dentário / Daily variation of mercury exposure among dental assistants and students in a dental office
Fonte: Rev. bras. odontol;71(1):17-21, Jan.-Jun. 2014. tab.
Idioma: pt.
Resumo: O mercúrio é um metal utilizado na Odontologia em restaurações de amálgama. Este estudo avaliou os níveis de exposição ao mercúrio em trabalhadores de um consultório dentário de uma empresa de serviço social. A metodologia incluiu a observação do processo de trabalho, detectando as possibilidades de exposição ao Hg, a aplicação de um questionário sobre o uso do amálgama e a avaliação da exposição ao mercúrio pela determinação do teor de Hg em amostras de urina dos trabalhadores. Foram coletadas 68 amostras com média de 1,39 ± 0,40 μg.Hg/L. A diferença entre as médias nos Grupos foi de apenas 0,02 μg.Hg/L, não sendo estatisticamente significante (p = 0,174). Os níveis de mercúrio nas amostras estavam abaixo do limite estabelecido pela legislação.

Mercury is a metal used in odontology for amalgam restorations. This study evaluated the daily levels of exposure to mercury in dental office workers of a social service company. The methodology included observation of the work process, to detect the possibility of exposure to mercury, the application of a self-reported questionnaire about the use of amalgam and assessment of mercury exposure for the determination of Hg in urine samples. Sixty-eight samples were collected with urinary mercury average of 1.39 ± 0.40 μg.Hg/L. The difference of mean urinary mercury concentrations between Groups was 0.02 μg.Hg/L, not having a statistically significant result (p = 0 .174). T he l evels o f m ercury i n a ll s amples w ere below the maximum allowed by law.
Descritores: Urina
Saúde do Trabalhador
Odontologia
Monitoramento Biológico
Mercúrio
Responsável: BR485.1 - Biblioteca Mário Badan



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