1,720,958 research outputs found
Treatment optimisation of odontogenic maxillary sinusitis
No full textClinical study was performed in LUHS Kaunas Clinics department of oral and maxillofacial surgery. Total of participants – 93. The aim of the study is to evaluate the effectiveness of treatment of odontogenic maxillary sinusitis, performing only etiological tooth extraction
The influence of synthetic bone graft material on alveolar dimensions after immediate implant placement: 3D CBCT analysis
No full textRelevance of the problem and aim of the work: immediate implantation is one of the most popular treatments. During this surgery implant is placed immediately after tooth extraction. If bone tissue defects have been identified, this implantation is usually performed using a variety of bone substitutes. However when there are intact alveolar ridge and appropriate dimensions of hard tissues, the need of these materials is questionable. Therefore, the aim of this work is to investigate the significance of the use of synthetic bone substitute for the dimensions of alveolar ridge after immediate implant placement in intact bone. Material and the methods: this study was performed in LUHS Kaunas Clinics department of oral and maxillofacial surgery. Total of participants – 20. They all required implantation in the upper jaw premolars area. Patients were divided into two groups: no synthetic bone substitute was used in the control group and the gap between the buccal wall and the implant was filled with biphasic calcium phosphate (BCF) in the study group. Two CBCT scans were taken of each patient: immediately after implant placement and 3 months later. The horizontal width of the alveolar ridge in the buccolingual direction at the level of implant was evaluated. The change in bone parameters was analyzed in each group individually and the difference was compared between groups. Results: in the control group, without the use of synthetic bone substitute, the buccolingual dimensions of the alveolar ridge showed significant differences during the 3-month period after surgery (p=0,009). In the study group, the differences in buccolingual dimensions of the alveolar ridge were not statistically significant (p=0,059). No significant difference was found of the change in bone parameters between the two groups (p=0.074). Conclusions: no significant effect of the use of synthetic bone substitute on alveolar bone parameters in the buccolingual direction with presecne of intact bone was observed
Chronic odontogenic rhinosinusitis: optimization of diagnostics and sinus surgical treatment indications
No full textChronic rhinosinusitis is the inflammation of the mucosal lining of the paranasal sinuses caused mostly by allergies or respiratory infections. The cause of this disease is mainly rhinogenic, but close proximity of the maxillary roots to the sinus floor makes also dental disease a probable cause of chronic rhinosinusitis. This infection may get through the apex of the root, deep periodontal pocket, oroantral fistula, during endodontic treatment or implant surgery. Clinical symptomatology of chronic odontogenic rhinosinusitis is similar to chronic non-odontogenic sinusitis, therefore it is often confused with the latter and treated improperly, what can cause serious complications. Aim of the study To establish most accurate diagnostical radiological method for patients with chronic odontogenic rhinosinusitis, to explore the impact of clinical symptomatology and life quality in chronic odontogenic rhinosinusitis diagnostics, to form clear indications for surgical sinus treatment. Study objectives 1. To explore the clinical efficacy of main radiological methods (CT, OPG, PR) for patients with chronic odontogenic rhinosinusitis. 2. To define the most common clinical symptoms of chronic odonto-genic rhinosinusitis in comparison with chronic non-odontogenic rhinosinusitis. 3. To explore health related life quality in patients with chronic chronic odontogenic rhinosinusitis and to compare it with chronic non-odontogenic rhinosinusitis. 4. To explore the radiological (CT) indications for maxillary sinus surgery in patients with chronic odontogenic rhinosinusitis 5. To explore the changes in clinical symptomatology in patients with chronic odontogenic rhinosinusitis after elimination of dental infection. 6. To form indications for surgical maxillary sinus treatment in patients with chronic odontogenic rhinosinusitis. Novelity of the study Correct identification of dental pathology in CORS is a crucial point in its successful treatment. The properties of main radiological methods that are used for this porpose are widely explored and described in literature [19–21, 35]. On the other hand, another important point is the evaluator of these radiological views, whose work speciality, experience and competence can differ and could have a high impact on the correct diagnosis. In this study, the impact of radiological evaluator for CORS diagnosis is explored for the first time. There is a duobtful difference in clinical symptomatology between CORS and CNRS [22, 25]. On the other hand, the is a lack of studies explor-ing the frequency, severity and impact on HRQL. In thi
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe 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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