Clinical Trial Evaluating Color Change and Tooth Sensitivity Throughout and Following In-office Bleaching

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

Vale a pena ver de novo - organização e acesso a arquivos televisivos na França, Grã-Bretanha e no Brasil

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

Air versus saline in the loss of resistance technique for identification of the epidural space

BackgroundThe success of epidural anaesthesia depends on correct identification of the epidural space. For several decades, the decision of whether to use air or physiological saline during the loss of resistance technique for identification of the epidural space has been governed by the personal experience of the anaesthesiologist. Epidural block remains one of the main regional anaesthesia techniques. It is used for surgical anaesthesia, obstetrical analgesia, postoperative analgesia and treatment of chronic pain and as a complement to general anaesthesia. The sensation felt by the anaesthesiologist from the syringe plunger with loss of resistance is different when air is compared with saline (fluid). Frequently fluid allows a rapid change from resistance to non-resistance and increased movement of the plunger. However, the ideal technique for identification of the epidural space remains unclear.ObjectivesTo evaluate the efficacy and safety of both air and saline in the loss of resistance technique for identification of the epidural space.To evaluate complications related to the air or saline injected.Search methodsWe searched the Cochrane Central Register of Controlled Trials (CENTRAL) (2013, Issue 9), MEDLINE, EMBASE and the Latin American and Caribbean Health Science Information Database (LILACS) (from inception to September 2013). We applied no language restrictions. The date of the most recent search was 7 September 2013.Selection criteriaWe included randomized controlled trials (RCTs) and quasi-randomized controlled trials (quasi-RCTs) on air and saline in the loss of resistance technique for identification of the epidural space.Data collection and analysisTwo review authors independently assessed trial quality and extracted data.Main resultsWe included in the review seven studies with a total of 852 participants. The methodological quality of the included studies was generally ranked as showing low risk of bias inmost domains, with the exception of one study, which did not mask participants. We were able to include data from 838 participants in the meta-analysis. We found no statistically significant differences between participants receiving air and those given saline in any of the outcomes evaluated: inability to locate the epidural space (three trials, 619 participants) (risk ratio (RR) 0.88, 95% confidence interval (CI) 0.33 to 2.31, low-quality evidence); accidental intravascular catheter placement (two trials, 223 participants) (RR 0.90, 95% CI 0.33 to 2.45, low-quality evidence); accidental subarachnoid catheter placement (four trials, 682 participants) (RR 2.95, 95% CI 0.12 to 71.90, low-quality evidence); combined spinal epidural failure (two trials, 400 participants) (RR 0.98, 95% CI 0.44 to 2.18, low-quality evidence); unblocked segments (five studies, 423 participants) (RR 1.66, 95% CI 0.72 to 3.85); and pain measured by VAS (two studies, 395 participants) (mean difference (MD) -0.09, 95% CI -0.37 to 0.18). With regard to adverse effects, we found no statistically significant differences between participants receiving air and those given saline in the occurrence of paraesthesias (three trials, 572 participants) (RR 0.89, 95% CI 0.69 to 1.15); difficulty in advancing the catheter (two trials, 227 participants) (RR 0.91, 95% CI 0.32 to 2.56); catheter replacement (two trials, 501 participants) (RR 0.69, 95% CI 0.26 to 1.83); and postdural puncture headache (one trial, 110 participants) (RR 0.83, 95% CI 0.12 to 5.71).Authors' conclusionsLow-quality evidence shows that results do not differ between air and saline in terms of the loss of resistance technique for identification of the epidural space and reduction of complications. Applicability might be compromised, as most of the results described in this review were obtained from parturient patients. This review underlines the need to conduct well-designed trials in this field.

Bacterial and chemical leaching of chalcopyrite concentrates as affected by the redox potential and ferric/ferrous iron ratio at 22 degrees C

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo de termos simples, expressões fixas e semifixas encontrados em corpora paralelos e comparáveis da subárea de economia política

The main purpose of this investigation is to analyze the most frequent simple terms, fixed and semifixed expressions in the subarea of Social Political Economy in Portuguese and their corresponding terms in English, found in fifteen papers written by Bresser-Pereira and in his self-translated texts. The methodology used is the Corpus-Based Translation (Baker, 1992, 1993, 1995, 1996; Camargo, 2005, 2007), Corpus Linguistics (Berber Sardinha, 2004) and Terminology (Barros, 2004). Results show that terms and expressions used in the source texts have no univocity within the specialized language related to the Brazilian Social Sciences. The terms translated into English also reflect variation due to the options chosen by the selftranslator as he seeks to adapt the theoretical concepts to the possibilities of the Target Language.

Prevalência de alterações locais e sistêmicas em indivíduos com disfunção temporomandibular

Temporomandibular disorder describes a variety of conditions including joint and muscle in the stomatognathic system, characterized by pain, TMJ sounds, functions irregular jaw and represent the leading cause of nondental pain in the orofacial region. The objective of this research was to evaluate the prevalence of ophthalmological, otological and cognitive-behavioral changes, parafunctional habits in individuals with temporomandibular disorders (TMD). A total of 117 medical records of female and male individuals, aged 18 to 60 years, from the Occlusion, Temporomandibular Dysfunction and Orofacial Pain of the Ribeirão Preto School of Dentistry – USP, between 2010 and 2011. The anamnesis index proposed by Helkimo was used to classify the individuals according to TMD severity degree and to divide them into two groups: AiI (mild to moderate) with 69 individuals and AiII (severe) with 48 individuals. The groups were then subdivided with respect to gender (72.64% female and 27.36% male) and age. There was predominance in the 18-40 year age group (60.68%) when compared to the 41-60 year age group (39.32%). Data were collected through an interview with questions about the presence of parafunctional habits, otological, ophthalmological and behavioral changes. Data were subjected to the statistical analysis using the Kruskal-Wallis test. The prevalence of each change was also evaluated. The results showed statistically significant for all groups according to gender, age and degree of severity. Individuals with temporomandibular disorders exhibited high prevalence of systemic and local dysfunctions.

O jogo como mediador na entrevista: um novo lugar no processo psicoterápico com adolescentes

It is a fact that between the child and the adult there is an adolescent being that experiments his experiences in a different way than those others. Therefore, in clinical care, the use of toys and play do not have the same value as for the children, and, on the other hand, the majority of adolescents are not ready, as the adult is, for the exclusive use of speech in the psychotherapy context. There is the need to introduce some specific strategy in order to give the adolescent conditions to express himself openly in the psychotherapy process. The mediator's resource introduces this variable to enable the expression of emotions for those who cannot find the available channels for that. This paper seeks to answer this question by presenting the Time Tunnel Game in the psychotherapy with young people, based, during several years, on its clinical use with patients during this period of their lives. Explaining, when it is a question of a demand for a game, that the youngster tries to respect the rules, therefore, expressing his experiences more at ease. By using the mentioned game, it is not the psychotherapist that questions or addresses the youngster, but it is through this playing that the questions arise, providing the youngster a facilitating context for his experiences, even for the more difficult ones. At the direct request of the psychotherapist, it is possible that the adolescent may have the imposing idea that he is being evaluated, which is inadequate when attending any youngster. It is understood that this facilitation also occurs because in a game the atmosphere of lucidity is less threatening to the patient to reveal himself as playing. It is the game that "interviews" and, therefore, the youngster has less to be afraid of when expressing his experiences.

A importância da pesquisa de fontes para os estudos históricos

The importance of research sources for historical studies. In our text we try to call the attention to the fact that, concerning the sources, the most important aspect is the researcher who considers them. This consideration is a product of history, thus in each period and according to his social and political status, the researcher will conceive the sources in a particular way. Therefore, there is no single way to deal with the sources, which is unrelated to how the researcher behaves in relation to contemporary issues.

Reproduction of Meloidogyne enterolobii in lettuce cultivars of the american group

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

The effect of simvastatin treatment on bone repair of femoral fracture in animal model

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

Rietveld refinement and optical properties of SrWO4:Eu3+ powders prepared by the non-hydrolytic sol-gel method

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Does the plankton community follow the horizontal water quality heterogeneity in a tropical urban reservoir (Guarapiranga reservoir, Sao Paulo, Brazil)?

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

Monofilamentary Ag/Bi:2212 tapes - Effects of silver powder addition

The Bi-Sr-Ca-Cu-O system has been one of the most studied superconducting ceramic materials for industry applications. The most of the studies with this aim are on silver/ceramic composites, due to the benefits and great compatibility of this metal with the oxide. Tapes made by the powder in tube (PIT) method have been successfully tested in pilot power plants in many countries but in Brazil. In this paper, 5, 10, and 20-wt% silver powders are introduced to compose the core of the tape along with the Bi:2212 ceramic powder. The results of electrical experiments are compared with those made with no silver addition Ag tapes. The best current density, at 60 K and no applied magnetic field, was found for the 10-wt% silver proportion, doubling the value obtained for the tape with no silver in the core.

Szegö polynomials: quadrature rules on the unit circle and on [-1, 1]

We consider some of the relations that exist between real Szegö polynomials and certain para-orthogonal polynomials defined on the unit circle, which are again related to certain orthogonal polynomials on [-1, 1] through the transformation x = (z1/2+z1/2)/2. Using these relations we study the interpolatory quadrature rule based on the zeros of polynomials which are linear combinations of the orthogonal polynomials on [-1, 1]. In the case of any symmetric quadrature rule on [-1, 1], its associated quadrature rule on the unit circle is also given.

IR-visible upconversion and thermal effects in Pr3+/Yb3+-codoped Ga2O3 : La2S3 chalcogenide glasses

IR-visible upconversion fluorescence spectroscopy and thermal effects in pr(3+)/Yb3+-codoped Ga2O3:La2S3 chalcogenide glasses excited at 1.064 mum is reported. Intense visible upconversion emission in the wavelength region of 480-680 nm peaked around 500, 550, 620 and 660 nm is observed. Upconversion excitation of the Pr3+ excited-state visible emitting levels is achieved by st combination of phonon-assisted absorption, energy-transfer and phonon-assisted excited-state absorption processes. A threefold upconversion emission enhancement induced by thermal effects when the codoped sample was heated in the temperature range of 20-200 degreesC is demonstrated. The thermal-induced enhancement is attributed to a multiphonon-assisted anti-Stokes process which takes place in the excitation of the ytterbium and excited-state absorption of the praseodymium. The thermal effect is modelled by conventional rate equations considering temperature-dependent effective absorption cross-sections for the F-2(7/2)-F-2(5/2) ytterbium transition and (1)G(4)-P-3(0) praseadymium excited-state absorption, and it is shown to agree very well with experimental results. Frequency upconversion in singly Pr3+-doped samples pumped at 836 nm and 1.064 mum in a two-beam configuration is also examined.