Virtual Surgery in Implantology: A Systematic Review and State of the Art

Introduction: Dental implant procedures have increased worldwide, reaching approximately one million dental implants per year. The optimization of faster and more accurate techniques by dentists and postoperative surgeons with better results and quality of life stimulated the development of numerous software and hardware for performing computer-guided surgeries, so-called virtual surgeries (VS). Objective: to present, through a systematic review, the main considerations of virtual surgery in dentistry and their respective advantages, disadvantages, and limitations. Methods: The model used for the review was PRISMA. We used databases such as Scielo, Lilacs, Google Scholar, PubMed. Major findings: In the scenario of VS in dentistry, advances in technology have contributed to the improvement of the models, since there was only the direct molding technique to obtain patient models, with the positioning of implants not very favorable in terms aesthetics. The information that is acquired in the 3D reconstructions allows us to determine the quantity and quality of the available bone and also allows the simulation of the installation of the implants in a virtual environment. This provides predictability of techniques and difficulties that can be encountered during surgical intervention, reducing the time and the possibility of errors, allowing the overall reduction of oral rehabilitation costs. Conclusion: Preoperative virtual planning and reconstruction of the mandible guided by dental implants through preoperative designs provide high success rates for the implant and dental rehabilitation, benefiting also prosthetic restorations supported by fixed implants. Still, the concept of using personalized implants with the help of 3D virtual treatment planning, stereolithographic models, and computer-assisted design greatly improves the mandibular restoration and helps to obtain a good facial profile, aesthetic and dental rehabilitation, avoiding complications with the grafts autologous

Forensic psychiatric systems in the world

OBJETIVO: Este estudo visa a uma abordagem da psiquiatria forense dentro de diferentes contextos, no sentido de mostrar como essa ciência é influenciada por aspectos legais e culturais. MÉTODO: Foi feita uma revisão bibliográfica com o objetivo de apreender formas culturalmente diferentes de se lidar com a lei dentro do campo médico-psiquiátrico. RESULTADOS: Existe uma enorme gama de fatores, de diversas naturezas (legal, política, cultural, religiosa), que enriquece e, simultaneamente, dificulta um debate sobre o tema. CONCLUSÕES: Existem dois grandes obstáculos para se adquirir um conhecimento sobre a prática, em todo o mundo, da psiquiatria forense. O primeiro diz respeito a uma heterogeneidade que dificulta sua descrição de forma clara, e o segundo se refere ao próprio desconhecimento de realidades culturalmente muito diferentes. Por outro lado, essas mesmas dificuldades devem representar um estímulo para novos estudos dessa natureza, objetivando a alcançar, pouco a pouco, uma maior compreensão da matéria.OBJECTIVE: The study aims to approach forensic psychiatry within different contexts. It endeavors to show how this specific psychiatry science area is influenced by legal and cultural aspects. METHOD: The bibliography reviewed had in view understanding the different ways of how to deal with law within the psychiatric sphere, from a cultural point of view. RESULTS: there is a great heterogeneity, of different nature (legal, political, cultural, and religious) that enrich, but at the same time makes difficult, a debate about this issue. CONCLUSIONS: there are two great obstacles to achieve a good knowledge about the practice of forensic psychiatry all over the world. The first one is represented by a heterogeneity that makes difficult its description in a comprehensible way. The second is the lack of knowledge of the cultural diverse realities. These difficulties should be a stimulus for newer studies of this characteristic. Only in this way it becomes possible to gradually increase the comprehension of this issue

This study is part of the "Pacu" (Colossoma mitrei Berg 1895) project of biotecnology

Anais do XXXIX Congresso Nacional de BotânicaOs 102 aparelhos digestivos analisados foram provenientes de espécimes capturados no Pantanal de Mato Grosso, nos municípios do Poconé e Barão de Melgaço. O estudo da vegetação aquática, ciliar e de áreas inundáveis foi conduzido nas áreas onde os espécimes de "pacu" foram capturados. Foram considerados também dados biométricos do "pacu", tais como: comprimento total do esôfago, do intestino e do estômago.The studies were conducted in areas of Pantanal, municipalities of Poconé and Barão de Melgaço (Mato Grosso, Brasil). In conjunction with the vegetation study, the stomach contents od 102 espécimes of "pacu" were analized. The results indicate that Colossoma mitrei's custom feeding is herbivorous

Estudo da vegetação relacionada com a alimentação do "pacu" (Colossoma mitrei-berg(1895) no Pantanal Mato-grossense

Os 102 aparelhos digestivos analisados foram provenientes de espécimes capturados no Pantanal de Mato Grosso, nos municípios do Poconé e Barão de Melgaço. O estudo da vegetação aquática, ciliar e de áreas inundáveis foi conduzido nas áreas onde os espécimes de "pacu" foram capturados. Foram considerados também dados biométricos do "pacu", tais como: comprimento total do esôfago, do intestino e do estômago. _________________________________________________________________________________ ABSTRACTThis study is part of the "pacu" (Colossoma mitrei Berg 1895) project of bio-tecnology. The studies were conducted in areas of Pantanal, municipalities of Poconé and Barão de Melgaço (Mato Grosso, Brasil). In conjunction with the vegetation study, the stomach contents od 102 espécimes of "pacu" were analized. The results indicate that Colossoma mitrei's custom feeding is herbivorous

The crucial importance of air valve characterization to the transient response of pipeline systems

[EN] Air valves are often crucial components in an air management strategy for pressurized water conveyance systems. However, the reliability of characteristic curves of air valves found in product catalogs is quite variable. This paper evaluates the consistency of a selection of product curves to basic air flow principles. Several recurring issues are identified: catalogs that present identical curves for admission and expulsion (they are, in fact, quite distinct); admission curves that are inconsistent with the isentropic inflow model; inflow (admission) curves actually consistent with the shape of the isentropic outflow model; limited validity curves that encompass only part of the subsonic flow regimen; and unclear or unstated specifications regarding the conditions under which the characterization tests were performed or their results displayed. To examine the significance of these representational issues related to air valve capacity on system behaviour, this paper uses a case study involving the simulated transient response arising from a pump trip at the upstream end of a rising water line having a distinct high point fitted with an air valve. It is found that employing inaccurate air valve characteristics in a transient simulation may potentially result in appreciable or even dangerous simulation errors.This study was financed in part by the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior-Brasil (CAPES)-Finance Code 001.Tasca, E.; Karney, B.; Fuertes-Miquel, VS.; Dalfré Filho, JG.; Luvizotto Jr., E. (2022). The crucial importance of air valve characterization to the transient response of pipeline systems. Water. 14(17):1-13. https://doi.org/10.3390/w14172590113141

Osseointegrated Implants: A Comprehensive Review

The most common bone disorder found by implant dentists is osteoporosis, which is a systemic skeletal disorder associated with aging, which is characterized by loss of bone mass, making bones fragile and more susceptible to fractures. The World Health Organisation has defined osteoporosis as a bone mineral density level greater than 2.5 standard deviations below the mean of young normal women. After 60 years of age, a third of the population have this disorder, it occurs twice as often in women than in men. It is estimated that 1.3 million fractures and 133,000 all hip fractures occur every year as a result of osteoporosis. This study aimed to discuss aspects of the pharmacological action of Bisphosphonates (BP) and their influence on the bone tissue when associated with treatment with dental implants. There are several types of treatments that prevent or prevent the progression of osteoporosis. So, BP, such as alendronate, are inhibitors of bone resorption. Act as controlling the development of osteoporosis by increasing the process of bone density and decrease its reabsorption, often acting as supporting the process of osseointegration of dental implants

Dental Implants and Plasma Rich in Fibrine: A Wide Literary Review

Introduction: When a dental element is lost in the posterior region of the maxilla, there is natural reabsorption of the alveolar process and at the same time there will be pneumatization of the maxillary sinus. It will increase its volume towards the place where the roots existed and this will often make it difficult or impossible to restore implants in place. For this reason, the procedure for elevating the floor of the maxillary sinus or short implants should be performed when possible. In this context, allogeneic, xenogenous, and alloplastic bone grafts are an alternative for the treatment of bone defects in the jaws, since they avoid the need for a second surgical access. However, due to the need for processing to eliminate antigenic components, these grafts are only osteoconductive with a lower bone formation potential compared to autogenous bone grafts. Also, in this context, in the last 20 years, platelet concentrates have been proposed as regenerative materials in tissue regeneration procedures. Among the platelet concentrates proposed in the literature, PRP and FRP are found to act as autogenous platelet aggregates with osteoinductive properties. Objective: The present study aimed to conduct a wide literature review on maxillary sinus surgery using fibrin-rich plasma. Methods: Experimental and clinical studies (case reports, retrospective, prospective and randomized) with qualitative and/or quantitative analysis were included. Results: The total of 48 articles were found involving Maxillary sinus surgery, Fibrin-rich plasma, and Biomaterials, of which 22 were selected to compose the present study. Conclusion: Based on the literary findings, it was shown that the FRP is favorable for bone formation processes for dental implants, especially when combined with xenografts

Osseointegrated Implants in the Scenario of Osteonecrosis Occurrence with the use of Bisphosphonates: A Descriptive Review of Clinical Studies

The most common bone disorder found by implant dentists is osteoporosis, which is a systemic skeletal disorder associated with aging, which is characterized by loss of bone mass, making bones fragile and more susceptible to fractures. The World Health Organization has defined osteoporosis as a bone mineral density level greater than 2.5 standard deviations below the mean of young normal women. After 60 years of age, a third of the population have this disorder, it occurs twice as often in women than in men. It is estimated that 1.3 million fractures and 133,000 all hip fractures occur every year as a result of osteoporosis. The aim of this study was to discuss aspects of the pharmacological action of Bisphosphonates (BP) and their influence on the bone tissue when associated with treatment with dental implants. There are several types of treatments which prevent or prevent the progression of osteoporosis. So, BP, such as alendronate, are inhibitors of bone resorption. Act as controlling the development of osteoporosis by increasing the process of bone density and decrease its reabsorption, often acting as supporting the process of osseointegration of dental implants

Effect of a bonding resin layer associated with a self-etching adhesive system on the bond strength of indirect restorations

The aim of this study was to evaluate the influence of a low-viscosity bonding resin applied over a self-etching adhesive system on the microtensile bond strength (µTBS) of indirect restorations. Comparisons were made using One Up Bond F (OB) self-etching adhesive system, Single Bond (SB) one-bottle adhesive system and Scotchbond Multi Purpose Plus (SMP) bonding component. Thirty bovine incisors were extracted and decoronated at the cementoenamel junction. The labial surfaces were ground so that superficial dentin and deep dentin were exposed. The specimens were randomized to three groups (n=10): G1- OB; G2- OB + SMP; G3- SB. In G2, a layer of the SMP bonding was applied over the OB adhesive system. Indirect composite restorations were bonded using dual-cure cement under 500 g load for 5 min. The specimens were serially sectioned with a bonding area of ± 1.0 mm² in 3 regions: enamel (E), superficial dentin (SD) and deep dentin (DD). The sticks were fixed with cyanoacrylate adhesive and submitted to µTBS test at a crosshead speed of 0.5 mm/min in a mechanical testing machine (EMIC DL 2000). The fractured specimens were examined under scanning electron microscopy to determine the failure mode. Data were analyzed by one-way ANOVA followed by Tukey's test (

Resistance of Brazilian diamondback moth populations to insecticides

Plutella xylostella is a recurring pest on cruciferous crops around the world. In Brazil, it typically requires large number of insecticide sprays, which may lead to fast evolution of resistance. The aim of this study was to assess the susceptibility of Brazilian diamondback moth populations to the insecticides abamectin, deltamethrin, and spinosad. Leaf dip bioassays were used to determine mortality data obtained after 48 h of exposure to insecticides and subjected to Probit analysis. The population from Bonito, state of Pernambuco, Brazil, had the highest toxicity ratio (20.2 - fold) to abamectin compared to the reference population. The LC50 values for deltamethrin ranged from 85.2 to 360.1 mg L-1, demonstrating a high survival of populations in relation to this insecticide field dose rate (7.5 mg L-1). The toxicity ratios of the estimated LC50s, however, were very low (varying from 2.2 - to 4.2 - fold). Most populations exhibited toxicity ratios for spinosad, ranging from 2.3 - to 5.1 - fold, while both the LC50 and LC95 values reflected a high susceptibility to the spinosad field dosage (120 mg L-1). Only the Bonito - PE population resisted to abamectin, while all P. xylostella populations were resistant to deltamethrin, but particularly susceptible to spinosad because of the absence of selection pressure with it in these areas.Plutella xylostella é uma praga recorrente em brássicas de todo o mundo. No Brasil, normalmente exige grande número de pulverizações de inseticidas, que pode levar à rápida evolução da resistência. Avaliou-se a suscetibilidade de populações brasileiras da traça das crucíferas aos inseticidas abamectina, deltametrina e espinosade. Bioensaios de imersão de folhas foram utilizados para determinar a mortalidade, sendo os dados obtidos após 48 h de exposição aos inseticidas e submetidos à análise de Probit. A população de Bonito-PE apresentou a maior razão de toxicidade (20,2 vezes) para abamectina em relação à população de referência. Os valores de CL50s para deltametrina variaram entre 85,2 - 360,1 mg L-1, demonstrando alta sobrevivência das populações a este inseticida com relação à dose de campo (7,5 mg L-1). Entretanto, as razões de toxicidade das CL50 estimadas foram muito baixas (variando de 2,2 a 4,2 vezes). A maioria das populações apresentou razões de toxicidade para espinosade, variando de 2,3 para 5,1 vezes, embora os valores de CL demonstram alta suscetibilidade delas à dose de campo para espinosade (120 mg L-1). Apenas a população de Bonito PE apresentou resistência a abamectina, enquanto todas as populações de P. xylostella estão resistentes a deltametrina, mas suscetíveis ao espinosade particularmente devido à ausência de pressão de seleção com este nestas áreas