1,720,977 research outputs found
Bibliometric analysis of 50 most cited articles on odontomas
No full textObjective: To identify the citation features and review articles on odontomas using bibliometric analysis. Material and Methods: A list of studies about odontoma was obtained by searching using the Scopus database. Abstracts or full texts were read and evaluated. After then, 50 most cited articles were achieved. Studies were categorized as citation numbers, citation density, journal name, article type, the affiliation of the first author and publication year. Descriptive statistics were used to analyze the results. Results: The most frequently cited article received 358 citations, while the least frequently cited article received 42 with a mean of 94.3 citations per article. The mean citation density was 5.13. The study with the highest citation density (12.31) was published in 2006. The highest citation number was found in the 2000s following the 1990s. The 50 most cited articles were published from 1971 to 2011, with 84% (42 of 50) published after 1990. USA (n = 9) and Brazil (n = 6) were the two most contributing countries. According to article type, there were eight (16%) review articles. Conclusion: The USA found to have a strong influence on research about odontoma, followed by Brazil. All researches were reported in English, and most of them were published in good quality journals
Bibliometric Analysis of 50 Most Cited Articles on Odontomas
Get PDFObjective: To identify the citation features and review articles on odontomas using bibliometric analysis. Material and Methods: A list of studies about odontoma was obtained by searching using the Scopus database. Abstracts or full texts were read and evaluated. After then, 50 most cited articles were achieved. Studies were categorized as citation numbers, citation density, journal name, article type, the affiliation of the first author and publication year. Descriptive statistics were used to analyze the results. Results: The most frequently cited article received 358 citations, while the least frequently cited article received 42 with a mean of 94.3 citations per article. The mean citation density was 5.13. The study with the highest citation density (12.31) was published in 2006. The highest citation number was found in the 2000s following the 1990s. The 50 most cited articles were published from 1971 to 2011, with 84% (42 of 50) published after 1990. USA (n = 9) and Brazil (n = 6) were the two most contributing countries. According to article type, there were eight (16%) review articles. Conclusion: The USA found to have a strong influence on research about odontoma, followed by Brazil. All researches were reported in English, and most of them were published in good quality journals
Oral and Dental Changes of Dyskeratosis Congenita: A Case Report with Literature Review
No full textDyskeratosis congenita (DC) is an uncommon disease characterized by nail dystrophy, cutaneous hyperpigmentation, leukoplakia, pancytopenia, and malignant transformation. There can be some oral and dental changes such as oral leukoplakia, increase in tooth decay, hypodontia, thinning of enamel layer, aggressive periodontitis, intraoral brown pigmentation, missing tooth, taurodontism, and blunted roots. Most of cases belong to dermatology or pediatrics department. There are few reports about dentistry. The aim of this report is to lay emphasis on this fatal syndrome among dentists about the multisystem findings and oro-dental changes. Thus, this information may aid dentists in early diagnosis. A case of 21-year-old male diagnosed with DC is reported
Gingival Enlargement in Patients who Have Undergone Renal Transplants: A Meta-Analysis
Get PDFSevere gingival enlargement (GE) is one of the most commonly observed adverse effects in patients who have undergone renal transplants due to the use of cyclosporine A. Objectives: We aimed to gain more insight into the prevalence of GE in patients with renal transplants. Methods: We searched the PubMed and Web of Science databases for relevant studies from January 1990 to January 2018. Using random effects models, we calculated summary incidence rates and 95% confidence intervals (CIs). Results: A total of 595 patients from 10 studies were included. Patients using cyclosporine A with or without any other drugs had a 62.6% (95% CI, 41.9%–79.5%) incidence of GE. Subgroup analysis according to diagnostic criteria showed that the incidence of GE was lower when using well-defined diagnostic criteria or scoring system. The incidence of GE was 88.2% (95% CI, 80.9%–93.0%) in patients using cyclosporine A with nifedipine. Cyclosporine A without nifedipine was associated with a significantly decreased risk of GE incidence when compared with the combination of cyclosporine A and nifedipine (odds ratio: 0.198; 95% CI, 0.083–0.473; P \u3c 0.001). Conclusions: It is important for all clinicians to know the effects of the aforementioned drugs and the treatment options
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
An evaluation of the relationship between maxillary sinus anterior wall depression and maxillary sinus opacity by computed tomography and panoramic radiography
No full textObjective: Maxillary sinus anterior wall depression (AWD) has been associated with patterns such as the presence of panoramic innominate line and silent sinus syndrome. The aim of this study was to evaluate the relationship between AWD of maxillary sinus and both maxillary sinus opacity and the presence of innominate line using computed tomography (CT) and panoramic radiography (PR). Materials and methods: 250 CT and PR images (122 female, 128male) which had been taken for various reasons were randomly selected from the radiology archive of the our department. Innominate line visibility in PR is divided into three as invisible, obscure and clear. On CT images, the distance between guide line and the deepest point of the maxillary sinus anterior wall was calculated as AWD. The presence of maxillary sinus opacity and maxillary sinus AWD were evaluated on CT images. Demographic information such as age, gender and localization of the findings were noted in all measurements. Results: In 143 (57.2%) patients, the innominate line (clear and obscure patterns) was seen on the PR images. AWD was observed in 104 (41.6%) CT images. The presence of maxillary sinus opacity was observed in 117 (46.8%) images. The mean right anterior wall depth was 5.69 and 4.88 in males and females, respectively, while the mean left anterior wall depth was 5.64 and 4.94 in males and females, respectively. Right wall depth was significantly higher in males (p 0.05). Conclusions: Anterior wall depression was found to be associated with both maxillary sinus opacity and the visibility of the innominate line. Patients with AWD should be considered as susceptible to maxillary sinus diseases
Variations on the Author
Get PDF“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
Get PDFWe 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
MRI investigation of TMJ disc and articular eminence morphology in patients with disc displacement
No full textPurpose: The aim of this study was to evaluate the morphology of the temporomandibular joint (TMJ) articular eminence and disc and the relationship between morphology and inclination in patients with disc displacement. Methods: TMJ magnetic resonance images (MRI) of 30 patients with disc displacement with reduction (DDWR) on one side and disc displacement without reduction (DDWOR) on the other side were analyzed. Articular eminence morphology was subdivided as box, sigmoid, flattened and deformed. Articular disc configuration was characterized as biconcave, biplanar, biconvex, hemiconvex and folded. The articular eminence inclination was measured as the angle between the Frankfurt plane and a line drawn from the glenoid fossa roof to the lowest point of the articular eminence. Results: Regarding articular eminence shape, in both DDWR and DDWOR groups, the most frequent articular eminence shape was flattened shape. Regarding to the disc morphology, biplanar shape was the most frequently observed in both DDWR side and DDWOR side. The mean articular eminence inclination was 32.62 and 33.85 in the DDWR and DDWOR side, respectively. Conclusions: Disc and articular eminence morphology was found to have no relationship with TMJ internal derangement except the relationship between flattened type and internal derangement. The articular eminence inclination have no influence on disc reduction
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