1,720,964 research outputs found
FORAME E CANALE RETROMOLARE : CASE REPORT
No full textIl canale retromolare (RMC) e il forame (RMF) rappresentano rare variazioni anatomiche localizzate nella zona retromolare del
mandibola, dietro il terzo dente molare. Questo caso clinico evidenzia l'importanza clinica di queste strutture a causa di
il loro coinvolgimento in diverse procedure chirurgiche come quelle inferiori estrazioni dei terzi molari
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Management of facial subcutaneous emphysema during third molar surgery: a case report
Full text linkAim and objective: Aim of this case report is to illustrate a rare subcutaneous emphysema during third molar extraction. Background: Third molar extraction is a common procedure in oral surgery. Common complications that may occur after the surgical procedure include bleeding, pain, swelling, and trismus. Subcutaneous emphysema in an unusual complication during dental extraction and it could lead to life-threatening situations. Case description: In this report, a 26-year-old female patient experienced a facial subcutaneous emphysema, occurred in a few seconds during the surgical extraction of an impacted lower left third molar performed by the use of a high-speed turbine. The patient showed a normal mouth opening but an impossibility to fully open the left eye; there was no pain or breathing difficulties. A manual reduction of the emphysematous zone was performed. Amoxicillin 875 mg with clavulanic acid 125 mg in tablets every 12 h for 6 days was prescribed; 4 mg of intramuscular betamethasone (Bentelan, Defiante Farm Unipessoal LDA, Funchal, Portugal) were injected locally at the intervention site, and 80 mg of ketoprofen every 8 hours in case of pain, were administered after surgery; the patient was observed for 4 hours then allowed to leave the hospital. Follow-up visits were scheduled at 1, 3, and 6 days after surgery. The healing was obtained in 6 days. Conclusion: The prevention of subcutaneous emphysema requires minimal invasive surgery avoiding the use of high-speed air-turbine and flaps should be minimal elevated and properly retracted by an expert operator. Even if subcutaneous emphysema is self-limiting and usually heals in 7–10 days, its prevention and early and accurate diagnosis are essential to avoid complications or life-threatening conditions. Clinical significance: The procedures described in this case report may be of clinical significance in the knowledge, prevention, and treatment of subcutaneous emphysema, a potentially life-threatening condition
Lingual flap protection during third molar surgery: a literature review
Full text linkThe purpose of this review was to analyze how the retraction and protection of lingual flap (LF+) could influence the incidence of lingual nerve injury (LNI) during third molar extraction, as compared with protocols that do not involve handling of lingual tissue (LF). A literature review was performed from the Medline and Scopus medical databases, using the keywords lingual nerve and third molar surgery. From the selected articles, the mean values for transitory and permanent LNI's incidence were elaborated, taking into account the group treated with LF+ technique and the group treated with LF technique. Of 480 articles, 11 studies were included in the review. The LF+ group counted 3,866 surgeries and it resulted in a transitory LNI's mean incidence of 2.98 ± 0.03% and a mean incidence of 0.1 ± 0.003% for permanent LNI. The LF group counted 5,938 surgeries with, respectively, 1.92 ± 0.02 and 0.49 ± 0.006% of transitory and permanent LNI's incidence mean values. The results of this study suggest that the application of LF+ techniques reduces the risk of damage and injuries of lingual nerve
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