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The finite element method (MEF) has been a methodology proposed in the laboratory evaluation of the mechanical behavior of endodontic instruments, as well as the potential of this resource for laboratory research. A review of 30 articles in the literature on the finite element method (MEF) was carried out to evaluate if the method is an advantageous alternative in the study of the mechanical behavior of endodontic files. The fracture of the endodontic instruments is linked to the geometry of the product and the finite element method allows to analyze with greater precision the distribution of tension throughout the instrument. Given the information gathered in the literature, this method allows access to information that is very difficult to obtain with other mechanical tests in the laboratory, thus being a valuable tool to assist engineering teams in important tasks in the development or adjustment of a product. [ABSTRACT FROM AUTHOR]

The Enterococcus faecalis are microorganisms frequently found in persistent endodontic infections and are probably the best species to adapt to and tolerate the poor ecological conditions in root canal obturation. In order to show which characteristics make E. faecalis so resistant and to verify its susceptibility to different antimicrobial agents, a broad literature review of the literature was performed aiming to analyze the performance of the intracanal medication on this etiologic agent. The search was based on access to the Pubmed and Bireme databases. Fifty manuscripts met the inclusion criteria and were used in this review. The results showed that E. feacalis a rapid recovery from nutritional deprivation and environmental stress, has strong factors of viirulence and is located in places difficult to reach the endodontist. When submitted to different intracanal medicinal products, E. faecalis had a higher susceptibility to those containing chlorhexidine. However, this bacterium still presents a high level of complexity in its elimination and a potential risk to endodontic failure. [ABSTRACT FROM AUTHOR]

Introduction: obtaining the anatomical model represents an important step in the diagnosis and planning of prosthesis, so it must be obtained through a correct molding technique, observing all anatomical accidents relevant to a good impression. Objective: to emphasize, through a clinical case report, that the modified molding technique can achieve success when indicated and performed correctly. Case report: This paper reports an alternative molding technique for Kennedy's Class I Removable Partial Prosthesis in patients with resorbed edges and soft tissue excesses. Final considerations: the technique of molding using an alternative technique allows the correct impression of the edentulous area to be obtained through a simple technique. [ABSTRACT FROM AUTHOR]

Introduction: a variety of studies has shown that low-power laser stimulates osteogenesis. The mechanisms proposed for the biostimulating effect of the laser involve increased ATP synthesis and formation of reactive oxygen species (ROS) by mitochondria. These EROs, including hydrogen peroxide, act on cell signaling and influence the regulation of gene expression, leading to cellular responses at hours or even days after irradiation. Peroxiredoxins (Prxs) constitute a family of abundant enzymes capable of breaking down hydrogen peroxide. Objective: a literature review was carried out on the biostimulating effects of low power laser on oxidative stress during the cicatrization process. Material and Methods: a search of the PubMed and Scielo databases was carried out in recent years, following inclusion and exclusion criteria, using as descriptors peroxirredoxin, low power laser and osteoblasts. Results: fifty full-text articles were identified that fit the inclusion and exclusion criteria. As for the types of Peroxirredoxins, Prxs I and IV were highlighted. Conclusion: In light of the information gathered in the literature, we conclude that the mechanisms of action of the laser induce the formation of EROs, and we also stress the importance of establishing safe parameters in the laser application so that the desired effects of biostimulation are achieved and that toxic effects are avoided. [ABSTRACT FROM AUTHOR]

Actuality the use of Fixed Partial Denture with Cantilever until causes many doubts, making de dentist do not indicate this treatment. To making clear the characteristics relation to this prosthesis, was done a literature review. A search was performed in the Scielo and Pubmed databases using the keywords: Fixed prosthesis, cantilever, supporting teeth. The articles within the scope of the study were selected and it can be concluded that these were an alternative excellent to reestablish the follow teeth, therefore to obtain the good results with respect long-term prosthetic appliances, special attention should be dispensed to the biomechanics principles and optimal hygiene with plaque control should be established. [ABSTRACT FROM AUTHOR]