1,720,958 research outputs found

    Prenvention of traumatic dental lesions: cognitive research on the role of mouthguards during sport activities in paediatric age

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    ABSTRACT. Aim This study reports a personal contribution and the analysis of the most recent literature on prevention of dentoalveolar traumas, and the lack of knowledge and use of protective oral devices in adolescent subjects (7-12 years old) practicing sports. Different oral protection devices will be illustrated, and among them the types more suitable for the investigated age group. Materials and methods Recently we conducted a survey on a sample of 300 children between 8 and 11 years of age practicing basketball, to assess the frequency of oral traumas, correlated predisposing factors, level of knowledge of mouthguards and possible frequency of use of such devices. Results From the survey it emerged that only 30 subjects knew about mouthguards (15 of them received the information from their dentist) and none of them received information from the coach or within the sport club. Furthermore, only 3 subjects (1% of the sample) wore a mouthguard during practice. Our study and other literature contributions highlight the total lack of information of the practitioners, especially the young ones, and the unconcern for these problems by the organisations (clubs) where sports are practiced. A cycle of 2 brief conferences about orofacial trauma prevention and use of mouthguard was administered. Regarding the type of mouthguard more suitable to adolescent athletes, the semi-individual types of new generation seem to be the best choice, since they can be refitted multiple times in order to adapt to the dental and skeletal growth. Conclusion We can conclude reasserting the absolute need of providing information about the risks of orofacial trauma related with basketball and other contact sport activities, and to promote the use of mouthguards as a primary protective measure among athletes, which will considerably reduce the social costs associated with such trauma occurence

    Therapeutic approach to intrusive luxation injuries in primary dentition: a clinical follow up study

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    Aim This paper reports the results of a fifteen-years study carried out at the Dentoalveolar trauma study Centre of the University of Cagliari Dental Department, on treatment modes utilised for the recovery of periodontal injuries in primary dentition .Materials and Methods The data referred to dental injuries were collected and recovered according to Andreasen's dental trauma Classification: clinical Signs and symptoms, patient's age and gender, lesion site.The Authors focused their attention on intrusive luxation in pimary dentition, which are a very frequent trauma in children between 1-4 years of age. Results This careful conservative approach allowed the repositioning of about 60% of the 85 intruded teeth examined.It substantially reduced the number and severity of undesiderable sequelae, both local( enamel-hypoplasia) and occlusal(tooth retention), so that only in 25 % of the followed-up cases damages of the successor tooth were found in the permanent dentition.Conclusion The author conclude their study emphasizing that all those involved in paediatric Dentistry must be familiar with periodontal injuries and trained in their treatment, particularly as regard intrusive luxation in primary dentition

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Appropriate Similarity Measures for Author Cocitation Analysis

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    We provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis

    Dispelling the Myths Behind First-author Citation Counts

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    We conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more sophisticated methods

    Author Index

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    koamabayili/VECTRON-author-checklist: VECTRON author checklist

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    We have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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