1,720,963 research outputs found
Cross-tongue: a clinical answer to long-standing lingual anaesthesia
No full textLingual nerve (LN) lesions may occur during several oral and maxillo-facial procedures. Prompt surgical nerve repair is mandatory in case of certain LN damage, since the sooner the repair procedure, the better the functional recovery. Furthermore, there is no literature consensus for surgical repairs taking place after 18 months or more, due to extremely variable results. Since employing a motor nerve source other than the proximal stump has proven effective for nerve regeneration in other clinical situations, the Authors proposed using the contralateral healthy LN to add a strong axonal sprouting source to treat 3 patients affected by long standing LN lesion. 30% of the contralateral LN fibres were co-opted by surgical side-to-end neurorrhaphy. Axonal regeneration was achieved on the pathological side of the tongue by a reverse sural nerve graft (cross-tongue procedure). Distal end-to-end neurorrhaphy was accomplished in the free half of the distal stump of the pathological LN.During the postoperative period the sensitivity of the hemi-tongue on the repaired side increased progressively, almost equating normal side levels, as evidenced by sensory and pain-potential registration results. Sensitivity restoration was demonstrated by sensory threshold testing, while improved taste, temperature and static/dynamic two-point discrimination also emphasized good recovery
La placca sovraplatismatica: una nuova soluzione nel trattamento delle fratture mandibolari da difosfonati
No full textLa necrosi dei mascellari in seguito a trattamento con difosfonati è oramai divenuta una situazione clinica di frequente riscontro. Spesso i pazienti affetti presentano scadenti condizioni generali e pertanto il loro trattamento è di tipo conservativo, che nelle prime fasi è limitato alla rimozione del sequestro osseo. Negli stadi avanzati della malattia la necrosi può portare alla formazione di fistole cutanee ed alla frattura mandibolare, con conseguente deterioramento delle condizioni di vita dei pazienti. Presentiamo un’utile soluzione tecnica per la stabilizzazione delle fratture mandibolari causate dalla necrosi ossea nei pazienti che assumono difosfonati ,al fine di ridurre il dolore e consentire la ripresa dell’alimentazione. Previa cervicotomia, su un piano superficiale al muscolo platisma, una placca mandibolare ricostruttiva autobloccante dello spessore di 2,4 mm viene modellata e successivamente posizionata, con l’impiego di viti corticali posizionate lontano dalla frattura. Il sito di frattura è invece approcciato per via endorale, e la chirurgia è limitata al courettage, con la rimozione di un eventuale sequestro osseo presente ed al lavaggio abbondante con soluzione fisiologica. I vantaggi di lavorare su un piano extraplatismatico sono molteplici. Si tratta di un piano sicuro nei confronti del n. marginalis mandibulae che si trova profondamente. Non essendoci interruzione del periostio, l’apporto ematico ai monconi residui della mandibola non viene compromesso. Inoltre questa tecnica consente di evitare il contatto diretto tra il sito di frattura spesso infetto e la placca ricostruttiva. Sebbene la guarigione della frattura non venga ottenuta , la fissazione della placca con questa tecnica è stabile nel tempo, i pazienti non hanno più dolore e possono riprendere ad alimentarsi, con un conseguente grande miglioramento della loro qualità di vita. Riteniamo che questa tecnica sia veloce, semplice ed efficace, in grado di offrire ai pazienti un lungo periodo libero da malattia
Aneurysmal bone cyst: effective nonsurgical treatment based on embolization, percutaneous alcoholization and injection of liquid hydroxyapatite
No full textAneurysmal bone cysts (ABCs) are rare and poorly understood bony lesions. ABCs are intensely vascularized by both high flow vessels and low flow “vascular lakes”.Owing to this features treating an ABC can often be difficult and perilous since abrupt hemorrhages can occur. Besides, enucleation or courettage are frequently blemished by local recurrence.Resection with reconstruction (often after previous embolization) is an option that yields higher cure rate but at the price of disfigurement or donor site morbidity.Here we report a preliminary analysis of a new technique that consist on endovascular embolization followed by percutaneous alcoholization and obliteration by injecting liquid hydroxylapathite into the vascular chambers. Two patients, who were previously treated with conservative surgical removal of mandibular ABC, presented with vast recurrences.Under general anesthesia an endovascular procedure was undertaken. Here facial and inferior alveolar arteries were closed by means of
cyanoacrilic glue. Then by percutaneous direct puncture the remaining “vascular lakes” were injected with absolute alcohol. Ten minutes after, when a fluoroscopic examination demonstrated no contrast leakage, liquid hydroxylapathite was injected into the chambers.No perioperative complications were recorded.Six months after the procedure no disease relapse was detectable.5 more patients with ABC outside the facial skeleton were treated with the same technique.Endovascular treatment followed by percutaneous injection of calcium hydroxylapathite seems to be a valid alternative to safely and conservatively manage ABCs.However longer follow up and higher number of treated patients are needed to deem this approach superior to the “standard” resection
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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