Are new TiNbZr alloys potential substitutes of the Ti6Al4V alloy for dental applications? An electrochemical corrosion study

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação do tipo de procedimento odontológico, cirurgia x dentística restauradora, na variabilidade do tempo de duração de dois anestésicos: bupivacaína x prilocaína

Pós-graduação em Odontologia - ICT

Determinação da resistência à flexão de ligas odontológicas, utilizadas em prótese parcial fixa e prótese sobre implante, soldadas por brasagem e a laser

Pós-graduação em Odontologia Restauradora - ICT

Concepção morfológica de fórceps, para intervenção no paciente em posição supina e o operador sentado

Ergonomics, the science of working rationalization, seeks the best relationship between man and his working tools. In Dentistry, ergonomics is present as for the professional working correctly seated, in functional comfort, intervening of supine position patient, by means of suitable equipment and instrument. Nowadays, dental equipment is justly rationalized; however, some instruments should take shape, in order to adapt those requirements. The hand tool design should permit a comfortable, non-slip and safe handling. Thus, anatomical details, the correct position of the operator for its use and specific characteristics of application should be taken into account. The instrument under analysis - forceps - was conceived according to these requirements along with a new alveolar tooth extraction technique, based on electromyographic and biomechanical studies. The morphology of the instrument, which makes possible a simple and natural kinetics of the operator, was obtained by changing the paradigm of the conventional cross-action instruments (whose grip is always on the arms of the tool), divesting the handle from the tool arm. This induced on anatomical conceiving of perpendicular handles to the extremity of the tool arm, resulting an efficient and effective instrument, according to indicated on its experimental phase

Contribuição de indicadores bibliométricos para a pesquisa em Ciência da Informação: análise da produção científica em Odontologia no Brasil

This paper aims at contributing with research about Information Science through analysis of Bibliometric indicators applied to Dentistry in Brazil, comparing the impact of such production with the ones from major countries in that field. The analyzed indicators are the following: total number of citations, self-citations, average of citations received a year and index h. Within the procedures, we outlined, in the Scimago Journal Rank (SJR) the group of producing countries in the field of Dentistry from 1996 to 2009. The results show that Brazil is the only country in Latin America which is among those of major impact in Dentistry. We highlight the role of the Bibliometric indicators as methodological contribution to the research while pointing out the main “performers” in the knowledge field.

Desenvolvimento de uma ferramenta de otimização para avaliar a expansão da transmissão de energia

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Development of hydrophilic nanocarriers for the charged form of the local anesthetic articaine

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Methods to evaluate and strategies to improve the biocompatibility of dental materials and operative techniques

Objective. The general aim of this article is to describe the state-of-the-art of biocompatibility testing for dental materials, and present new strategies for improving operative dentistry techniques and the biocompatibility of dental materials as they relate to their interaction with the dentin-pulp complex.Methods. The literature was reviewed focusing on articles related to biocompatibilty testing, the dentin-pulp complex and new strategies and materials for operative dentistry. For this purpose, the PubMed database as well as 118 articles published in English from 1939 to 2014 were searched. Data concerning types of biological tests and standardization of in vitro and in vivo protocols employed to evaluate the cytotoxicity and biocompatibility of dental materials were also searched from the US Food and Drug Administration (FDA), International Standards Organization (ISO) and American National Standards Institute (ANSI).Results. While there is an ongoing search for feasible strategies in the molecular approach to direct the repair or regeneration of structures that form the oral tissues, it is necessary for professionals to master the clinical therapies available at present. In turn, these techniques must be applied based on knowledge of the morphological and physiological characteristics of the tissues involved, as well as the physical, mechanical and biologic properties of the biomaterials recommended for each specific situation. Thus, particularly within modern esthetic restorative dentistry, the use of minimally invasive operative techniques associated with the use of dental materials with excellent properties and scientifically proved by means of clinical and laboratory studies must be a routine for dentists. This professional and responsible attitude will certainly result in greater possibility of achieving clinical success, benefiting patients and dentists themselves.Signcance. This article provides a general and critical view of the relations that permeate the interaction between dental materials and the dentin-pulp complex, and establish real possibilities and strategies that favor biocompatibility of the present and new products used in Dentistry, which will certainly benefit clinicians and their patients. (C) 2014 Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.

Estudo da viabilidade técnica, econômica e ambiental da substituição de um banco de resistências elétricas de aquecedores por uma caldeira alimentada por biomassa de paletes residuais na indústria de laminação

Given the increasing demand for fossil fuels to power the engines of the global economy, and also the slow process of synthesis of oil, it becomes necessary to develop new sources of renewable energy in addition to improve promising sources that already exist, turning them competitive. Based on this, biomass is shown very promising between the most popular energy sources due to its availability, applicability, and above all, the fact of not emitting green house gases when analyzing the whole carbon cycle. In this sense, this work presents, through an environmental, technical and economic analysis, the impact in an aluminum mill of replacing the use of electricity, in one process, by a boiler fueled with biomass from waste process of packaging the finished product with pallets. Thus, besides the reduction of CO2 emissions, financial gains are targeted, since the main goal of the corporations that require such power is to maximize its profits

Análise teórica de caldeiras de incineração de resíduos sólidos municipais

The discussion about possibility of deployment of MSW incineration boilers to generate electricity in Brazil is the major topic of this paper. In this article are showed some advantages and disadvantages of this technology, as well as a methodology for the estimate of area for the main equipments of a steam generator for a boiler incineration

Utilização de dados e técnicas de Sensoriamento Remoto no monitoramento da infestação por plantas aquáticas em reservatório de hidrelétrica

As an effect of the imbalance caused by the damming of rivers and pollution, it has been observed a growing aquatic plants infestation in reservoirs for the generation of electricity. In addition to power generation, these sites have also been used for various other purposes, including recreation, attracting water and navigation. Thus it is important to evaluate these water bodies periodically, in order to verify the leading conditions to the growth of algae, plants and other organisms. In this sense, Remote sensing technology can be a valuable tool for mapping and monitoring the occupation of land in the vicinity of the water body and the optical properties of water, to provide subsidies for the effective management of these aquatic environments. This paper aims to perform the monitoring of the occurrence of aquatic plants in Salto Grande Hydropower Reservoir, located in Americana (SP) and, periodically, map the occupation of land in the vicinity of the water body, through multispectral images taken by sensors on the satellites Landsat series in seven consecutive years: 2004, 2005, 2006, 2007, 2008, 2009 and 2010. The adopted methodological procedure included the images data and the classification of multispectral images to map, every year, the location and extension of the area infested by aquatic plants and the occupation of land

Controle de Qualidade em Raios X Odontológico Periapical

The purpose of this work is to provide quality control requirements and security in dental x-rays in order to obtain good quality image which allows the correct diagnosis, which reduces the dose to the patient, mainly due to the repetition of tests, and decreasing cost. The requirements apply to related activities to quality control and procedures using ionizing radiation for diagnostic imaging in dentistry by evaluating a minimum set of parameters to be tested or verified. Quality control follows the Ordinance No. 453 of the Ministry of Health of 06.01.1998, SS Resolution No. 625 of 12.14.1994 and Resolution No. 64 of the Health Surveillance Center – Department of Health of Sao Paulo and National Health Surveillance Agency – Ministry of Health of Brazil. This study was conducted in the city of Marilia, Sao Paulo, along with the Company P&R Consulting and Medical Physics, in a dental clinic of the University UNIMAR in the x-ray equipment used on that site. The physical parameters of the device were tested with the aid of ionization chambers to measure rates of radiation, electrometer to measure rates of time, kV and doses, radiographic films and positioning devices. Finally, this work demonstrates the need and importance of quality control, which one ensures the proper use of x-ray machines, maintaining efficiency and at the same time it reduces the risks to the patient, to the dentist and to the general public

Monitoramento hidrossedimentlógico da bacia hidrográfica do alto rio Sucuriú (MS) contribuinte da PCH Costa Rica

The growing demand for electricity in Brazil has stimulated the implementation of Small Hydro Power (PCH) in various regions of the country. However, the silting of reservoirs is a major problem faced by power plants and power plants. In this context, this study aimed to evaluate the data hydrosedimentological strategic points of the watershed of the Alto Rio Sucuriú (MS) to identify the possible causes siltation of the reservoir PCH Costa Rica and suggest mitigation measures. Hydrosedimentological surveys were conducted during the rainy season (February / March 2012) and drought (August 2012), and obtained data flow, discharge liquid, suspended solids and bottom and organic matter content. Based on these results it was determined that the points 2, 4, 7 and 9 are the largest contributors to sedimentation, and point 4 got most liquid discharge (38,20 m3s-1), point 7 largest discharge of solid suspension (906,3 mg L-1), points 2 and 4 major discharges solid totals (231,59 t dia-1 and 238,185 t dia-1 respectively) and point 9 higher organic matter content (22,18%) . Found greater fraction of fine sand and very fine suspended solids and solid medium sand in the background. As mitigation measures for the process of silting of the reservoir PCH Costa Rica (MS) highlights the orientation of landowners in adopting conservation measures and planting of leguminous species native to the region in symbiosis with nitrogen-fixing bacteria

Estudo do conjunto habitacional da CDHU S.J.C. e proposta de implantação de soluções economicamente viáveis

The Integrated Project developed here proposes the application of sustainable technologies to reduce costs and rational use of water and electricity in housing. The reduced consumption of resources and expenditures intended to ensure that families have financial ability to maintain their homes thus avoiding default and legal problems. The object of study that enabled the development of this work is the Housing Interlagos in São José dos Campos. Was analyzed the type of residence of the housing, the demographic characteristics of the region and the socioeconomic conditions of the borrowers, and from these data, was proposed solutions for sustainable housing

Screening of Conditions for the Preparation of Poly( -Caprolactone) Nanocapsules Containing the Local Anesthetic Articaine

The local anesthetic articaine (ATC) is widely used in dentistry; however, its side effects can include paresthesia and nerve injury. Polymeric nanocapsules (PN) can be used as carriers for drugs, and help to reduce undesirable symptoms. The objective of this study was to evaluate the influence of different factors on the average size, polydispersion, and encapsulation efficiency of PN containing ATC. Poly(ε-caprolactone) (PCL) nanocapsules containing ATC were prepared by the oil-in-water emulsion/solvent evaporation method. The final ATC concentration was 2%. The preparation conditions were optimized using a central composite blocked cube-star design to investigate the influence of two variables at five levels, with 22 factorial points (–1 and +1), two replicates of the central point, 2×2 axial points (–1.414 and +1.414), and an orthogonal distribution, resulting in 10 experiments. The factors varied were the PVA concentration and the sonication time. The nanocapsules showed a satisfactory size range, a polydispersivity index less than 0.2, and high encapsulation efficiency. The values of the factors had no significant influence on either average size or polydispersion, although the encapsulation efficiency was significantly influenced by the sonication time. Improved formulations were identified using the central composite design, which revealed that the main consideration in selecting a suitable formulation was the encapsulation efficiency. Two of the formulations showed both high encapsulation efficiency and colloidal characteristics appropriate for the route of administration.