Abstract: This study aimed to screen the public procurement for dental adhesives in a public health system and evaluate the variables associated with the type and cost of purchased materials. A time series was conducted with secondary data collated from the Brazilian Databank of Healthcare Prices (BDHP). All public procurements for adhesive systems registered from 2010 to 2019 were collated. The frequency of purchase was described, and a multiple linear regression model was used to assess the influence of unit price on predictor variables. Multinomial logistic regression was conducted to describe the influence of selected variables on the probability of purchase for different classes of adhesive systems. A total of 2,752 purchases were analyzed, and the total cost of these materials reached US$ 7,022,659.00 in the 10 analyzed years. The 3-step Etch & Rinse adhesives corresponded to 45.63% of the processes, with increased probability of being purchased over time. The process conducted by public universities in recent years, using the auction modality, presented lower unit prices. The year of purchase, the type of institutions, the institution's location, and the procurement modality influenced the procurement process. The performed analyses contribute to the understanding of the variables associated with the procurements for adhesive systems, providing valuable information for rationalizing public expenditure and for implementing evidence-based practices to guarantee cost-effective and clinically effective procedures for users of the Brazilian public healthcare system.

O estudo buscou avaliar as compras de resina composta em um sistema público de saúde e compreender as variáveis associadas com o custo e o processo decisório ao longo dos últimos dez anos. Os dados secundários foram coletados do Banco de Preços em Saúde (BPS), do governo federal, entre 2010 e 2019. Foram selecionadas todas as resinas compostas convencionais e bulk-fill. Os seguintes dados foram coletados: data de compra, tipo e localização da instituição, modalidade de licitação, número de itens comprados, fabricante e preços unitários. Um modelo de regressão linear múltipla avaliou o impacto do preço nas variáveis de licitação, enquanto a regressão logística variada comparou as probabilidades de compra entre os materiais. Foram coletadas 18.138 observações com 2.129.294 unidades compradas e um custo total de USD 43.504.260,00. As resinas convencionais apareceram em 98,5% dos processos de licitação. As resinas convencionais nanofilled foram os materiais mais comprados, com um aumento na probabilidade de compra ao longo do tempo, apesar dos preços mais elevados. Foi previsto um aumento nos preços de materiais bulk-fill em comparação com os convencionais. A probabilidade de compra dessa categoria aumentou em 3,14 vezes por ano. Variáveis sociodemográficas e educacionais influenciam os preços e a probabilidade de compra no sistema de saúde. As resinas nanofilled e bulk-fill são incluídas cada vez mais na prática clínica. Os achados destacam possíveis modificações no padrão de tratamentos de restauração e na maneira que a translação de conhecimento pode ocorrer, desde o desenvolvimento de materiais novos até a aplicação clínica, à luz do impacto econômico dessas modificações.

This study aims to assess the resin composite purchases in a public health system and understand the variables associated with its cost and with the decision-making process over a period of 10 years. Secondary data collection was performed using the Brazilian Healthcare Prices Database (BDHP) from 2010 to 2019. All conventional and bulk-fill composites were selected. Date of purchase, institution type and location, procurement modality, number of purchased items, manufacture, and unit prices were collected. A multiple linear regression model assessed the influence of price in the procurement variables, while a multinomial logistic regression compared purchase probabilities between the materials. In total, 18,138 observations were collected with 2,129,294 purchased units and a total cost of USD 43,504,260.00. Conventional composites appeared in 98.5% of the procurement process. Nanofilled conventional composites were the most purchased materials, with an increased probability of purchase over time, despite its higher prices. An increase in prices was predicted for bulk-fill materials when compared to conventional ones. The odds of purchasing this category increased by 3.14x for every price increase over the years. Sociodemographic and type of institution influences the prices and the probability of procurement in the healthcare system. Nanofilled and bulk-fill resin are increasingly included in clinical practice. These findings highlight possible modifications to the standard-of-care in restorative treatments and how the translation of knowledge may occur from the development of new materials to the clinical application considering the economic impact of these modifications.

El objetivo de este estudio fue evaluar las adquisiciones de resina compuesta en un sistema público de salud y comprender las variables asociadas con el coste y proceso de toma de decisión a lo largo de los últimos diez años. Se realizó una recogida de datos en el Banco de Datos de Precios de Atención Sanitaria (BDHP), de Brasil, de 2010 a 2019. Se seleccionaron todas las resinas convencionales y bulk-fill. Se recogieron: fecha de compra, tipo de institución y localización, modalidad de adquisición, número de ítems comprados, manufactura, y precios unitarios. Un modelo de regresión lineal múltiple evaluó la influencia del precio en las variables de adquisición, mientras una regresión multinomial logística comparó las probabilidades de compra entre los materiales. Se recogieron 18.138 observaciones con 2.129.294 unidades adquiridas y un coste total de USD 43.504.260,00. Las resinas convencionales aparecieron en un 98,5% del proceso de adquisición. Las resinas convencionales de nanorelleno fueron los materiales más comúnmente comprados, con una probabilidad mayor de compra a lo largo del tiempo, pese a sus precios más altos. Se predijo un aumento de los precios en los materiales bulk-fill, cuando se compararon con los convencionales. La probabilidad de compra en esta categoría se incrementa un 3,14x por cada aumento durante el año. Las variables sociodemográficas y educacionales influencian los precios y la probabilidad de adquisición en el sistema de salud público. Las resinas de nanorelleno y bulk-fill están incluidas cada vez más en la práctica clínica. Estos resultados subrayan las posibles modificaciones en el estándar de cuidado de los tratamientos restaurativos, y cómo se produce la transferencia de conocimientos, desde el desarrollo de nuevos materiales hasta su aplicación clínica, a la luz del impacto económico de estas modificaciones.

O estudo buscou avaliar as compras de resina composta em um sistema público de saúde e compreender as variáveis associadas com o custo e o processo decisório ao longo dos últimos dez anos. Os dados secundários foram coletados do Banco de Preços em Saúde (BPS), do governo federal, entre 2010 e 2019. Foram selecionadas todas as resinas compostas convencionais e bulk-fill. Os seguintes dados foram coletados: data de compra, tipo e localização da instituição, modalidade de licitação, número de itens comprados, fabricante e preços unitários. Um modelo de regressão linear múltipla avaliou o impacto do preço nas variáveis de licitação, enquanto a regressão logística variada comparou as probabilidades de compra entre os materiais. Foram coletadas 18.138 observações com 2.129.294 unidades compradas e um custo total de USD 43.504.260,00. As resinas convencionais apareceram em 98,5% dos processos de licitação. As resinas convencionais nanofilled foram os materiais mais comprados, com um aumento na probabilidade de compra ao longo do tempo, apesar dos preços mais elevados. Foi previsto um aumento nos preços de materiais bulk-fill em comparação com os convencionais. A probabilidade de compra dessa categoria aumentou em 3,14 vezes por ano. Variáveis sociodemográficas e educacionais influenciam os preços e a probabilidade de compra no sistema de saúde. As resinas nanofilled e bulk-fill são incluídas cada vez mais na prática clínica. Os achados destacam possíveis modificações no padrão de tratamentos de restauração e na maneira que a translação de conhecimento pode ocorrer, desde o desenvolvimento de materiais novos até a aplicação clínica, à luz do impacto econômico dessas modificações.

This study aims to assess the resin composite purchases in a public health system and understand the variables associated with its cost and with the decision-making process over a period of 10 years. Secondary data collection was performed using the Brazilian Healthcare Prices Database (BDHP) from 2010 to 2019. All conventional and bulk-fill composites were selected. Date of purchase, institution type and location, procurement modality, number of purchased items, manufacture, and unit prices were collected. A multiple linear regression model assessed the influence of price in the procurement variables, while a multinomial logistic regression compared purchase probabilities between the materials. In total, 18,138 observations were collected with 2,129,294 purchased units and a total cost of USD 43,504,260.00. Conventional composites appeared in 98.5% of the procurement process. Nanofilled conventional composites were the most purchased materials, with an increased probability of purchase over time, despite its higher prices. An increase in prices was predicted for bulk-fill materials when compared to conventional ones. The odds of purchasing this category increased by 3.14x for every price increase over the years. Sociodemographic and type of institution influences the prices and the probability of procurement in the healthcare system. Nanofilled and bulk-fill resin are increasingly included in clinical practice. These findings highlight possible modifications to the standard-of-care in restorative treatments and how the translation of knowledge may occur from the development of new materials to the clinical application considering the economic impact of these modifications.

El objetivo de este estudio fue evaluar las adquisiciones de resina compuesta en un sistema público de salud y comprender las variables asociadas con el coste y proceso de toma de decisión a lo largo de los últimos diez años. Se realizó una recogida de datos en el Banco de Datos de Precios de Atención Sanitaria (BDHP), de Brasil, de 2010 a 2019. Se seleccionaron todas las resinas convencionales y bulk-fill. Se recogieron: fecha de compra, tipo de institución y localización, modalidad de adquisición, número de ítems comprados, manufactura, y precios unitarios. Un modelo de regresión lineal múltiple evaluó la influencia del precio en las variables de adquisición, mientras una regresión multinomial logística comparó las probabilidades de compra entre los materiales. Se recogieron 18.138 observaciones con 2.129.294 unidades adquiridas y un coste total de USD 43.504.260,00. Las resinas convencionales aparecieron en un 98,5% del proceso de adquisición. Las resinas convencionales de nanorelleno fueron los materiales más comúnmente comprados, con una probabilidad mayor de compra a lo largo del tiempo, pese a sus precios más altos. Se predijo un aumento de los precios en los materiales bulk-fill, cuando se compararon con los convencionales. La probabilidad de compra en esta categoría se incrementa un 3,14x por cada aumento durante el año. Las variables sociodemográficas y educacionales influencian los precios y la probabilidad de adquisición en el sistema de salud público. Las resinas de nanorelleno y bulk-fill están incluidas cada vez más en la práctica clínica. Estos resultados subrayan las posibles modificaciones en el estándar de cuidado de los tratamientos restaurativos, y cómo se produce la transferencia de conocimientos, desde el desarrollo de nuevos materiales hasta su aplicación clínica, a la luz del impacto económico de estas modificaciones.

Aim This study analyzed public procurements for different endodontic materials used in the Brazilian public health system and evaluated the variables related to their cost. Methods A time-series study was performed by screening materials for endodontic application in the public Brazilian Databank of Healthcare Prices from 2010 to 2019. Data were categorized according to material composition and clinical application. The collated variables were used in a multiple linear regression model to predict the impact of unit price in procurement processes. Results A total of 5,973 procurement processes (1,524,693 items) were evaluated. Calcium hydroxides were found in 79% of the observations (4,669 processes). Prices drop each year by US$1.87 while MTAs and epoxy resins are increasingly purchased at higher prices (US$50.87; US$67.69, respectively). The microregion, the procurement modality, and the type of institution had no influence on unit prices in the adjusted model (p > 0.05). Conclusions Calcium hydroxide-based materials were the cheapest and most frequently purchased endodontic materials in the public health care system. Novel formulations are being implemented into clinical practice over time and their cost may be a barrier to the broad application of materials such as MTAs, despite their effectiveness.

Abstract The aim of this study was to evaluate the influence of different calcium phosphates (CaPs) on the physical, biological, and remineralizing properties of experimental resin-based sealants (RBSs). Triethylene-glycol dimethacrylate (90wt%) and bisphenol A-glycidyl methacrylate (10wt%) were used to produce resin-based sealants. Hydroxyapatite (SHAp), α-tricalcium phosphate (Sα-TCP) and octacalcium phosphate (SOCP) were added to the sealants in a 10wt% concentration. One group without CaPs was used as the control group (SCG). The degree of conversion (DC) was assessed with Fourier-transformed infrared spectroscopy, whereas cytotoxicity was tested with the HaCaT keratinocyte cell line. The ultimate tensile strength (UTS) was used to assess the mechanical strength of the experimental RBSs. Sealed enamel was used for colorimetric assay. Mineral deposition was assessed with Raman spectroscopy after 7, 14, and 28 days of sample immersion in artificial saliva. Scanning electron microscopy was used to analyze the surface morphology after 28 days of immersion. The addition of 10wt% of fillers significantly reduced the DC of sealants. SOCP groups showed reduced cell viability. Higher UTS was found for Sα-TCP and SHAp. The color analysis showed that SGC and demineralized teeth presented higher mismatches with the sound tissue. Mineral deposition was observed for SHAp and Sα-TCP after 7 days, with increased phosphate content and mineral deposits for SHAp after 28 days. RBS with the addition of 10% HAp promoted increased mineralization in vitro after 28 days, and did not affect cell viability, DC, mechanical properties, or RBS color in the enamel.

AbstractSkin diseases are common in hospitalized patients. However, there is a lack of data concerning their frequency. The objective of this study is to evaluate the prevalence of dermatological diagnoses in hospitalized patients after consultation requested by nondermatologist physicians to the Department of Dermatology, Hospital de Clinicas de Porto Alegre period of 10 years. A total of 5685 patients were evaluated, representing an average of 48.2 patients per month. The five most frequent groups were infectious dermatoses(33.25%), eczematous dermatoses (11.49%), drug reactions (11.43%), vascular dermatoses (6.81%) and group of pruritus, prurigo nodularis and urticaria (hives) (4.71%).

Este artigo apresenta a análise das transformações das significações sociais da atividade foco deste estudo - a renda de bilro - e suas implicações no processo de constituição de um sujeito aprendiz. As reflexões aqui apresentadas pautam-se nos pressupostos teóricos da Psicologia Histórico-Cultural. O resgate do contexto, isto é, da história do grupo em que este sujeito se insere, bem como da atividade em questão caracterizaram-se como importante aspecto do percurso traçado. Os dados analisados provêm de entrevistas realizadas com o sujeito. O desenvolvimento das análises possibilitou concluir que a constituição do sujeito é um processo complexo, multifacetado e ininterrupto onde a participação dos outros sujeitos tem relevância significativa mas não determinante nas suas escolhas, de maneira a singularizar algo que é socialmente partilhado.

This article presents an analysis of the transformations of the social significations of a handicraft activity, the bobbin-lace, and its implications in the process of constitution of a learner subject. The reflexions here presented rely on the theoretical principles of the sociocultural psychology. The recovering of the context, that means, the history of the group in which the subject takes place, as well as the history of the activity itself were important aspects of the path followed. The analysed data come from enterviews held with the subject. The development of the analysis made it possible to conclude that the constitution of the subject is a complex, multisized and permanent process in which the participation of the others does have a significative relevance but does not play a determinant role over the subject's choices, what allows him/her to turn something socially shared into a singular feature.

Arte e criatividade são temas que têm suscitado o interesse de muitos pesquisadores de diferentes orientações teórico-metodológicas e áreas do conhecimento. Visando a contribuir com o debate, é objetivo deste trabalho analisar o processo de criação/inovação em uma atividade específica, o fazer renda de bilro. As análises aqui apresentadas versam sobre o movimento de inserção de um sujeito na atividade rendeira na Ilha de Santa Catarina e foram tecidas a partir de suas próprias palavras. À luz dos aportes teóricos da Psicologia Histórico-Cultural, aspectos que singularizam tal sujeito constituíram-se como foco de análise, em especial aqueles relacionados ao movimento de criar nessa atividade.

Art and creativity are subjects that have risen the interest of many researchers from different theoretical and methodological approaches, as well as branches of knowledge ment. Aiming to contribute to this debate, the goal of this paper is to analyze the process of creation/innovation in a specific activity: weaving the Bilro lace. The analysis here presented points out to the insertion movement of a subject in the weaving activity at the Santa Catarina Island. This was possible to be made through the words of the researched individual. By studying the theoretical principles of the Sociocultural Psychology, some aspects that make the subject unique were the focused on the analysis, specially those related to the creative movement in the activity.