Tumor odontogênico queratocístico: revisão de literatura

The odontogenic keratocyst is called keratocyst odontogenic tumor (TOQ), due to its features compatible with neoplasms, such as its high recurrence rate and mechanism of growth. Although its etiology has unknown, the origin seems to be connected with dental lamina remaining. This entity is generally benign, with slow progression, asymptomatic, and among the odontogenic tumors, its prevalence is high. It affects mainly males, with predilection for the posterior mandible, while in most cases associated with an impacted tooth. Radiographically, this lesion is unilocular. Histological features are stratified epithelial basal cells with hyperchromatic paraqueratinizado. Treatment ranges from conservative to radical interventions. As a result of the controversy as TOQ tumor entity, the present work is a literature review of current findings, emphasizing its intrinsic features to contribute to developments in the study of this new entity.

A importância da geometria dos implantes para o planejamento em reabilitação oral: revisão de literatura

The design of implant structure is still a questioning to the professionals, while their variations can to influence of stress distribution favorably to bone. Therefore, the aim of study was to review addressing the topic of osseointegrated implants design establishing answers for the patient oral rehabilitation, according variations existing on the market. It was conducted a detailed search strategy by the PubMed/ Medline and Bireme, it was used as descriptors: “dental implants cylinder”; “dental implants thread”; “dental implants geometry”, until May 2014. From 798 articles, after review were selected 18 articles and 1 specific area book. The results were divided to compare design of implant and threads for further discussion and conclusions. Thus, conclude that the threads implants are best used because of its advantages with respect to the stress distribution and stability primary. The variations of the differents types of threads, have influence for stress distribution.

O tratamento da apneia obstrutiva do sono e a utilização de implantes osseointegráveis: revisão da literatura

The obstructive sleep apnea syndrome affects millions of people around the world. The mandibular repositioning devices have been indicated in cases of mild/moderate syndrome; however in edentulous patients its use is deficient since there is no retention. Therefore the objective of this study was to conduct a review on the use of this treatment method combined to osseointegrated implants. A search on the theme: Dental implant and sleep apnea syndromewas performed in the Medline/PubMed, ISI, Cochrane, Dentistry Oral Science, Clinical Trials, Controlled Trials, and Bireme-BvS, databases, and 22 articles were found. After anevaluation 2 studies were selected and the review was complemented with an analysis of randomized controlled trials in the previous seven bases using the key-words: Sleep apnea syndrome, Oral appliance and Randomized controlled trial. The search returned 37 articles, and after they were submitted to inclusion criteria 17 studies were selected. There are a small number of studies presenting the use of dental implants as a mean to assist the stabilization of the mandibular repositioning appliances; those that are available are case reports that focusing on the effectiveness of the technique. Studies examining the effect these appliances in dentate patients indicate improvement in the levels of apnea and snoring. The use of mandibular repositioning appliances in dentate patients is an effective technique in treatment of patients with obstructive sleep apnea syndrome mild/moderate. Randomized controlled trialsare required in order to enable an analysis of the use of mandibular repositioning devices with the aid of dental implants .

Implantes Platform Switching: longevidade e preservação óssea: revisão crítica da literatura

The concept of switching platform is the use of an implant by platform wider than the abutment. Recently, researches have shown that this type of dental implant design tends to offer a higher preservation of crestal bone when compared to the traditional pattern of bone loss. The present study aims to perform a critical review on the switching platform concept establishing possible advantages of the technique. A search was performed on Medline/Pubmed about the topic “dental implant” and “platform switching”, and after applying inclusion criteria 40 studies were selected. The literature on longevity present prospective studies that show less bone loss, studies in biomechanics exhibit better or similar stress distribution around the bone crest, however, is not yet defined the role of the biological width. Thus, studies of longevity, and randomized prospective studies are of a great relevance to be performed in order to confirm the benefits of this technique and to establish a protocol indication. It is possible, based on this literature review, to conclude that longitudinal and randomized studies show that the platform switching implants have longevity and less bone loss. Biomechanically, the technique is possible.

Reações alérgicas aos implantes osseointegráveis de titânio: uma revisão de literatura

Titanium dental implants have been common practice in the dental office, which can increases the number of allergic reactions to this material. Objectives: to alert dental surgeons and specialists of this possible phenomenon through a literature review. Material and methods: an electronic search at PubMed was performed with the keywords “dental implants”, “titanium”, and “allergy” from January 1990 to May 2013. Only articles published in the English language were included. Letters to editor were excluded. Results: from the 22 initially retrieved articles, only 7 were included, being 4 clinical case reports and 3 experimental studies. For clinical cases, the reactions included edema, erythema, exfoliative cheilitis, and eczema. Regarding experimental studies, skin rash and dermatitis were reported. A patch test was not used in two clinical reports. Only one study used histological analysis to attest the lack of allergic reactions. Conclusion: within the limits of the available literature, allergic reactions to titanium dental implants are extremely rare and seem to be related to the female gender. More controlled clinical studies are necessary to elucidate this question.

Ocorrência de reabsorção radicular no tratamento ortodôntico: revisão crítica da literatura

The root resorption is one of the possible sequels of greater complexity to the orthodontist, the difficulty of detection and be asymptomatic. The presence, during the orthodontic treatment, is linked to a multifactorial origin, a complex combination of biological activities, anatomical, physiological, genetic variables and mechanical forces. Thus, the aim of this study was perform to critical literature review related to root resorption in orthodontic movement. Were included articles published between 2004 to 2014, indexed in the PUBMED database. Used descriptors contained in the Mesh, being adopted as inclusion criteria: clinical trials in humans, only articles that had clear ideas and objective, articles with English language. The search strategy used resulted in 24 articles and after applied the inclusion and exclusion criteria, 11 articles remained. Based on the results of this study it was concluded that heavy forces of intrusion, inclination and torque leads to a greater degree of root resorption; its etiology is multifactorial, the periodic radiographic control during treatment is needed and further studies are suggested to identify more specifically the causes and risk factors for root resorption.

Fatores envolvidos no comportamento em higiene bucal e hábitos alimentares de crianças: revisão de literatura

The family is primarily responsible for shaping behavior in oral hygiene and nutrition of children, and cultural and psychosocial factors can influence this process. Thus, we carried out this study with the aim of presenting evidence from the literature on the subject. We reviewed the databases Bireme, Pubmed and Medline without restriction of year of publication. Used as descriptors "education," "care," "behavior," "oral health" and "food habits". We emphasize the responsibility of the family practices, values and beliefs of oral health and nutrition as well as the importance of shared care between family and professionals.

Circunferência da cintura ou abdominal? uma revisão crítica dos referenciais metodológicos

Embora haja consenso sobre a validade e facilidade do uso da antropometria na classificação da obesidade abdominal, ainda não existe consenso sobre a nomenclatura da medida e os sítios anatômicos para sua obtenção. Desta forma, o objetivo deste estudo foi analisar de forma crítica o uso da circunferência da cintura ou abdominal em adultos para aferição da obesidade abdominal. Foi realizada uma revisão sistemática a partir de busca em bases de dados indexadas MEDLINE (PubMed) e Scientific Eletronic Library Online (SciELO). Foram revisados artigos publicados no período compreendido entre 2003 e 2009. Quanto à nomenclatura, apesar dos National Institutes Health tratarem circunferência da cintura e abdominal como sinônimos, os pesquisadores internacionais, tem preferido o uso do termo circunferência da cintura. Quanto ao sítio anatômico para a medida, falta ainda consenso entre os pesquisadores e orientação da International Diabetes Federation (IDF). Considerando que os atuais pontos de corte para as populações de origem européia foram elaborados a partir dos sítios anatômicos estabelecidos pela OMS 1989, torna-se razoável a adoção desta referência. Sobre os pontos de corte, a proposta da IDF representa resultado de um consenso internacional e avalizado pela Sociedade Brasileira de Cardiologia.

Estudo de segurança de cosméticos: presente e futuro

Cosmetics have been used since ancient times and, recently, their consumption has increased greatly in many countries, including brazil, which is the third largest consumer market in the world. Thus, concern for the safety and efficacy of these products should be heightened, even though these products are rarely related to adverse reactions that damage the health. Brazilian law requires manufacturers to subject their products to safety testing, to assess the possible reactions that could be caused by them (irritation, sensitization, systemic effects). To this end, in general, animals have been used as the experimental model, but this practice is being increasingly controlled, so that the scientific community is looking for alternative tests that do not require experimental in vivo models. Thus, this review aims to describe the main biological assays used to assess the safety of cosmetics, as well as in vitro assays that can replace them.

Enxerto ósseo em odontologia: revisão de literatura

Bone is a specialized connective tissue, vascular and dynamic changes over the life of the organism. When injured, has a unique ability to regenerate and repair without the presence of scars, but in some situations due to the size of the defect, the bone tissue does not regenerate so completely, it is necessary to carry out bone grafting procedures. Considering there are various types of grafts and various donor sites. Thus, the aim of this study was to review the literature to some type of graft most commonly used in dentistry. Given the importance of bone reconstruction in oral and maxillofacial surgery, it is necessary to know the viability and influence of biomaterials, or not associated with autogenous grafts in bone repair. Even this, with many qualities, but further studies should be done to achieve each day, a synthetic material compatible with bone tissue lost in adequate amounts without requiring extra-oral surgeries that are considered to be devoted to higher morbidity.

Parada cardíaca perioperatória e relacionada à anestesia: revisão sistemática com meta-análise proporcional e análise de metarregressão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Forças manuais e o design de produtos: uma revisão

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

Utilizando estudo de caso(s) como estratégia de pesquisa qualitativa: boas práticas e sugestões

Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq)

Estudo da viabilidade econômica da implantação de incineradores de RSU na Região de Bauru

A principal preocupação relacionada à produção de resíduos tem sido o manejo e a gestão integrada, procedimentos que passaram a fazer parte das políticas de gestão com o objetivo de evitar problemas irreversíveis ao meio ambiente e aos seres humanos. Neste trabalho estuda-se a possibilidade da incineração dos Resíduos Sólidos Urbanos (RSU) como solução para o problema relacionado com a destinação dos resíduos gerados na Região de Bauru. Estimar os custos de capital e a viabilidade econômica para o projeto de incineradores de larga escala é uma tarefa prioritária para auxiliar o processo de tomada de decisão. Este trabalho revê a situação dos resíduos sólidos na região de Bauru e realiza revisão dos processos empregados e existentes no tratamento dos RSU com o objetivo de analisar a viabilidade da implantação de uma usina de incineração com geração de energia elétrica para o tratamento dos resíduos sólidos coletados na Região de Bauru. O estudo apresenta um retorno interessante ao passo que as simulações apresentam indicadores favoráveis a sua implantação.

Inovação tecnológica em projetos de novos produtos: um estudo exploratório sobre relações gerenciais de integração entre unidades de uma multinacional

Although thetopic of integrationin product development is widely debated in the literature, there are few studies that address the participation by subsidiaries of multinational and R & D centers around the world in development projects of new products. Focusing on the perception of the Brazilian unit, this paper aims to present and analyze integration practices among subsidiaries, headquarters and R&D centers in product development projects in amultinational high tech company. For this purpose, was conducted an exploratory and qualitative researched operationalized by case study. Among the main results, it was noted collaboration betweenlocals marketing and engineering with the R & D centers, important role of senior management in the Brazilian unit to communicate outcomes of the strategic planning of products andtechnologies established by the headquarters to the subsidiary, the adoption of technological and information mechanisms and the application of methods such as technology roadmap.