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1.
Actas dermo-sifiliogr. (Ed. impr.) ; 109(6): 508-514, jul.-ago. 2018. ilus, tab
Artigo em Espanhol | IBECS | ID: ibc-175612

RESUMO

Los primeros casos de dermatitis alérgica de contacto por acrilatos en procedimientos de manicura se describieron hace décadas en relación con la aplicación de uñas de porcelana. Recientemente se ha incrementado la frecuencia de sensibilización secundariamente a la implantación de los llamados esmaltes permanentes que contienen acrilatos UV curables, predominantemente entre las esteticistas que los aplican y en menor medida en usuarias. La reciente comercialización de kits de uso doméstico podría precipitar un aumento en la frecuencia aún mayor. En este artículo describimos su técnica de aplicación, la clínica, el diagnóstico, el tratamiento y la prevención. Los acrilatos están presentes en una amplia variedad de fuentes, incluidos múltiples materiales médicos. Una sensibilización desencadenada por un procedimiento puramente estético podría llegar a tener una importante repercusión en la salud, por lo que se imponen políticas restrictivas por parte de las autoridades que limiten su uso a profesionales cualificados y prohíban la venta indiscriminada de kits caseros


The first reported cases of allergic contact dermatitis from acrylates in manicure procedures in relation to the application of porcelain nails were published decades ago. The frequency of sensitization has increased due to the introduction of the so-called permanent nail polish containing photo-bonded acrylates, mainly involving the beauticians who apply them, and to a lesser extent, the consumers. The recent commercialized permanent polish kits for domestic use could trigger even higher degrees of sensitization. In this article, the clinical features, diagnostic procedures, treatment and preventive measures are described. Acrylates are present in a wide range of sources including multiple medical materials. Sensitization caused by a merely aesthetic procedure might end up having an eventual important impact in the future consumer's health which is why restrictive policies should be implemented limiting its use to qualified professionals and banning the indiscriminate sale of domestic kits


Assuntos
Dermatite Alérgica de Contato/etiologia , Metacrilatos/efeitos adversos , Cosméticos/efeitos adversos , Unhas , Dermatite Ocupacional/etiologia , Dermatite Alérgica de Contato/diagnóstico , Dermatite Alérgica de Contato/epidemiologia , Metacrilatos/química , Produtos para Unhas e Cutículas
2.
Rev. Rol enferm ; 40(9): 614-617, sept. 2017. ilus
Artigo em Espanhol | IBECS | ID: ibc-165957

RESUMO

Introducción. La estrategia terapéutica ideal para la resolución clínica de las heridas crónicas se basa en la promoción de la cicatrización. Un nuevo apósito de polvo de metacrilato ha mostrado resultados clínicos prometedores en el tratamiento de las úlceras cutáneas. Objetivo. Evaluar la eficacia del polvo de metacrilato estéril. Metodología. A través de un caso clínico de una paciente con ulcera crónica que había estado presente durante más de 6 meses después de una lesión accidental. Resultados. Se consigue una buena evolución de la herida y la epitelización completa de la úlcera, en 40 días del tratamiento. Discusión. Las úlceras crónicas de los miembros inferiores tienen un impacto importante en la calidad de vida de los pacientes y suponen una carga económica significativa para el sistema sanitario. El uso de polímeros de metacrilato en el cuidado de heridas no es reciente, pues se propuso hace treinta años. Conclusiones. La utilización de polvo liofilizado estéril proporciona un tratamiento seguro y muy efectivo para la mayoría de los pacientes con heridas de difícil epitelización. Este método disminuye el dolor y el exudado y acorta el periodo de cicatrización. Ha de ser la primera elección de tratamiento en estas lesiones. Es preciso un abordaje integral y multidisciplinar de los casos de difícil resolución, donde los enfermeros juegan un papel fundamental (AU)


Introduction. The ideal therapeutic strategy for the clinical resolution of chronic wounds is based on promoting healing. A new methacrylate powder dressing has shown promising clinical results in the treatment of skin ulcers. Objective. Evaluate the effectiveness of sterile methacrylate powder in the treatment of chronic skin ulcers. Methodology. Clinical case study of a patient with chronic leg ulcer, that remained unhealed 6 months after the accidental injury. Results. Within 40 days of treatment the wound had evolved positively, achieving the complete epithelialization of the ulcer. Discussion: Chronic lower-limb ulcerations have a negative impact on the quality of life of patients and pose a significant economic burden on healthcare systems. The use of methacrylate polymers in wound care is not recent; it was already proposed thirty years ago. Conclusions. The use of sterile lyophilized powder provides a safe and very effective treatment for the majority of patients’ wounds which show difficult epithelialization. This method reduces pain and exudation, shortens the healing period, and should be the first-choice treatment for these lesions. Nurses play a fundamental role in managing cases of chronic wounds, where a comprehensive and multidisciplinary approach is necessary (AU)


Assuntos
Humanos , Feminino , Idoso de 80 Anos ou mais , Cicatrização , Metacrilatos/uso terapêutico , Úlcera Cutânea/tratamento farmacológico , Qualidade de Vida , Papel do Profissional de Enfermagem , Administração Tópica , Atenção Primária à Saúde , Úlcera da Perna/tratamento farmacológico , Poli-Hidroxietil Metacrilato/uso terapêutico , Ferimentos e Lesões/tratamento farmacológico , Resultado do Tratamento , Manejo da Dor/métodos
3.
Endodoncia (Madr.) ; 35(2): 65-75, abr.-jun. 2017. ilus
Artigo em Espanhol | IBECS | ID: ibc-172306

RESUMO

Objetivo: Comparar el porcentaje de área de gutapercha, cemento y huecos en conductos curvos obturados con sistemas con vástago y evaluar la influencia de la activación del cemento durante su colocación. Metodología: 120 conductos curvos de molares mandibulares fueron preparados a un diámetro apical ProFile 30, 0.04. Se obturaron con los sistemas GuttaCore, GuttaFusion o condensación lateral y AHplus (n = 40). Se subdividieron los grupos (n = 20) y se colocó el cemento con activación sónica o no. El cemento se mezcló con Rodamina B para permitir el análisis mediante microscopía confocal. Se calculó el área de gutapercha, cemento y huecos a 3, 6 y 9 mm del ápice. Se realizó el análisis estadístico utilizando ANOVA de dos vías. Para la comparación por pares se realizó el test de Sidak. Resultados: Cuando se comparan los sistemas de gutapercha a 3 mm, GF mostró un mejor comportamiento. CL obtuvo los peores resultados. No se encontró influencia entre los sistemas de obturación y la activación del cemento. Cuando se comparó el porcentaje de huecos entre todos los grupos, los perores resultados fueron para CL a 6 y 9 mm. Conclusiones: Bajo las condiciones de este estudio, el área de gutepercha, cemento y huecos depende del sistema de obturación utilizado. El uso de activación del cemento no influye en la calidad de la obturación


Aim: To compare the percentage of gutta-percha, sealer and voids in curved root canals filled with different gutta-percha carrier-based systems and to assess the influence of activation of the cement during its placement. Methodology: 120 curved canals of mandibular molars were prepared to an apical size ProFile 30, 0.04. They were filled with either GuttaCore, GuttaFusion or lateral condensation and AHplus (n=40). Groups were subdivided (n=20) and sonic activation or not during the placement of the cement was carried out. Cements were labelled with Rhodamine-B dye to allow analysis under confocal microscopy. Percentage of gutta-percha, sealer and voids area were calculated at 3, 6 and 9 mm from the apex. Statistical analysis was performed using two-way ANOVA test. To compare between the obturation systems Sidak correction for multiple comparisons was applied. Results: When comparing the gutta-percha systems at the 3 mm level, GF revealed a better performance. At 6 and 9mm, LC obtained the worst results. An influence between the obturation systems and the activation of the cement was not found. When comparing the percentage of voids among all the groups, worst results were found for LC at 6 and 9 mm. Conclusions: Under the conditions of this study, gutta-percha, sealer area and voids were dependent on the obturation system. The use of activation of the cement do not influence the quality of root filling


Assuntos
Humanos , Tratamento do Canal Radicular/métodos , Guta-Percha/análise , Materiais Restauradores do Canal Radicular/análise , Obturação do Canal Radicular/métodos , Microscopia Confocal , Metacrilatos/uso terapêutico
4.
Med. oral patol. oral cir. bucal (Internet) ; 19(4): e350-e358, jul. 2014. ilus, tab
Artigo em Inglês | IBECS | ID: ibc-124796

RESUMO

OBJECTIVES: The aim of this study was to compare the cytotoxic effect of a methacrylate-based and a siloranebased composite on the human dental pulp stem cells (DPSCs) versus human dental pulp fibroblasts (DPFs).Study DESIGN: Samples of the Filtek Z250 and P90 were polymerized and immersed in the culture medium to obtain extracts after incubation for one, seven and 14 days. Magnetic cell sorting based on the CD146 expression was performed to purify DPSCs and DPFs. After incubation of both cells with the extracts, cytotoxicity was determined using the MTT test. RESULTS: For the extracts of first and seventh day, both composites showed significantly lower cytotoxicity on DPSCs than DPFs (p = 0.003). In addition, there was a significant difference in the time-group interaction of both materials indicating different cytotoxic behaviours (p = 0.014). In contrast to Z250, exposure to the 14th day extract of P90 resulted in higher cell viability compared to that of day seven. CONCLUSIONS: DPSCs are less susceptible to the cytotoxic effect of the composites than DPFs. Compared to Z250, the cytotoxic effect of silorane-based composite decreases as the time passes on. This difference should be considered, particularly in deep cavities, in order to preserve the regenerative capacity of the pulp


No disponible


Assuntos
Humanos , Resinas de Silorano/toxicidade , Metacrilatos/toxicidade , Resinas Compostas/efeitos adversos , Polpa Dentária , Células-Tronco , Células-Tronco Mesenquimais
5.
Arch. bronconeumol. (Ed. impr.) ; 49(10): 450-452, oct. 2013. ilus
Artigo em Espanhol | IBECS | ID: ibc-129129

RESUMO

El síndrome de Poland es una malformación congénita infrecuente. Se trata de una anomalía descrita en 1841 por Alfred Poland en el Guy's Hospital de Londres, caracterizada por hipoplasia de la mama y el pezón, escasez de tejido subcutáneo y ausencia de la porción costoesternal del músculo pectoral mayor, que se asocia a alteraciones de los dedos de la mano del mismo lado. La corrección de las anormalidades del tórax y los tejidos blandos en el síndrome de Poland varía según el autor. Presentamos el caso de una adolescente de 17 años en el que se elige una prótesis de metilmetacrilato para la reconstrucción de la pared torácica. Este procedimiento quirúrgico está recomendado en grandes defectos de la parte anterior del tórax e impide el movimiento paradójico de la misma. Además nos permite una remodelación individual del defecto de acuerdo con la forma del tórax (AU)


Poland syndrome is a rare congenital malformation. This syndrome was described in 1841 by Alfred Poland at Guy's Hospital in London. It is characterized by hypoplasia of the breast and nipple, subcutaneous tissue shortages, lack of the costosternal portion of the pectoralis major muscle and associated alterations of the fingers on the same side. Corrective treatment of the chest and soft tissue abnormalities in Poland syndrome varies according to different authors. We report the case of a 17-year-old adolescent who underwent chest wall reconstruction with a methyl methacrylate prosthesis. This surgical procedure is recommended for large anterior chest wall defects, and it prevents paradoxical movement. Moreover it provides for individual remodeling of the defect depending on the shape of the patient's chest (AU)


Assuntos
Humanos , Procedimentos Cirúrgicos Torácicos/métodos , Síndrome de Poland/cirurgia , Metacrilatos , Próteses e Implantes , Parede Torácica/transplante , Procedimentos de Cirurgia Plástica
7.
Med. oral patol. oral cir. bucal (Internet) ; 17(4): 716-720, jul. 2012. ilus, tab
Artigo em Inglês | IBECS | ID: ibc-103109

RESUMO

Objective: This study assessed the biocompatibility of the Epiphany endodontic sealer prepared with resinous solvent of Epiphany system (Thinning resin) in rat subcutaneous tissues. Study Design: Polyethylene tubes were filled with the sealer and 4 groups were established: GI, Epiphany prepared with 1 drop of resinous solvent (RS); GII, Epiphany prepared with 1 drop of RS and photoactivated; GIII, Epiphany associated with self-etch primer and prepared with 1 drop of RS; GIV, Epiphany associated with self-etch primer, prepared with 1 drop of RS and photoactivated. The filled tubes were implanted into 4 different regions of the dorsum of 20 adult male rats. Results: After 7, 14 and 21 days, all groups presented a moderate to severe chronic inflammation, necrosis and foreign-body giant cells. At 42 days, although the intensity of chronic inflammatory reaction decreased, the other features still were observed. Conclusion: The Epiphany sealer prepared with the RS was irritating to rat subcutaneous tissues (AU)


Assuntos
Animais , Ratos , Materiais Restauradores do Canal Radicular/efeitos adversos , Materiais Biocompatíveis/análise , Metacrilatos/análise , Solventes/análise , Tela Subcutânea
8.
Dentum (Barc.) ; 10(2): 77-80, abr.-jun. 2010. tab
Artigo em Espanhol | IBECS | ID: ibc-96792

RESUMO

El uso material de relleno para aumento de tejidos blandos data de finales del Siglo XIX. Se han utilizado una larga lista de materiales como grasa autóloga, parafina, silicona, colágeno bovino, que sigue creciendo en la actualidad. Su mecanismo de acción es similar en todos ellos: se trata de materiales supuestamente inertes que al ser infiltrados provocan un aumento de volumen. Nuestro trabajo repasa los materiales semipermanentes y permanentes existentes en la actualidad, ya sean semipermanentes (aquellos cuya duración se aproxima al año) o permanentes (no biodegradables). Entre los primeros se encuentra el ácido poliláctico, cuya duración oscila entre los 12 y 18 meses y la Hidroxiapatita de calcio, de duración similar al anterior. En el segundo grupo hallamos al metacrilato, las acrilamidas y las polialquilimidas (AU)


The use of filler material to increase soft tissue dating from the last nineteenth century. We used a long list of materials such as autologous fat, paraffin, silicone, bovine collagen, which keeps growing at present. The mechanism of action is similar in all of them: this is supposedly inert materials to be infiltrated to cause an increase in volume. Our study reviews the materials semi-permanent and permanent that exist nowaday, semi-permanent (whose duration is about a year) or permanent (not biodegradable). Included in the first group we can findpolylactic acid, whose duration ranged between 12 and 18 months and calcium hydroxyapatite, similar to the previous term. The second group are the methacrylate, acrylamide and the polialquilimidas (AU)


Assuntos
Humanos , Procedimentos de Cirurgia Plástica/métodos , Materiais Biocompatíveis/análise , Metacrilatos/uso terapêutico , Substitutos Ósseos/uso terapêutico , Durapatita/uso terapêutico , Acrilamidas/uso terapêutico
9.
Av. odontoestomatol ; 20(1): 11-17, ene.-feb. 2004. ilus
Artigo em Es | IBECS | ID: ibc-32193

RESUMO

Se realiza una revisión a la historia de la adhesión comenzando en las culturas precolombinas ("era pre-adhesiva"), para continuar en la "era adhesiva" con las aportaciones de Buonocuore y la aparición del Bis-GMA, pasando por la incorporación al mercado dental de los fosfatos, los oxalatos, el sistema Gluma. Se analiza también la descripción de la capa híbrida por Nakabayashi, después aparecen los primeros acuosos y la hibridación de tejidos duros hasta llegar a los sistemas adhesivos autograbadores (AU)


An overview of dentin bonding history is done by the author since early south American cultures (pre-adhesive age) to continued in the adhesive age with Buonoccore's findings and the rise of Bis-GMA and the first dentin adhesives based on phosphate, oxalate and Gluma system. Nakabayashi's hybrid layer is described and the evolution of aqueous primers and hard tissues hybridation until arrival of newest self-etching adhesives (AU)


Assuntos
História do Século XVIII , História do Século XIX , Dentina/anatomia & histologia , Dentina/fisiopatologia , Dentina/crescimento & desenvolvimento , Cultura , Colagem Dentária/métodos , Colagem Dentária , Colagem Dentária/história , História da Odontologia , Fosfatos/administração & dosagem , Oxalatos/administração & dosagem , Metacrilatos/administração & dosagem , Metacrilatos/uso terapêutico , Poli-Hidroxietil Metacrilato/administração & dosagem , Poli-Hidroxietil Metacrilato/uso terapêutico , Estética Dentária/história
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