1,720,974 research outputs found
Le réflexe nauséeux en prothèse amovible complète
No full textMONTROUGE-BUFR Odontol.PARIS5 (920492101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF
Etude comparative des empreintes sous pression digitale et sous pression occlusale dans les réfections de base en prothèse amovible complète
No full textLe but de cette étude est d'analyser et de comparer deux techniques d'empreinte de réfection de base en prothèse amovible complète, l'une utilise la pression digitale de l'opérateur et l'autre sollicite la pression occlusale du patient afin de déterminer laquelle entraîne le moins de déplacements à l'interface surface d'appui-prothèse. Matériels et méthodes. Cette étude porte sur 10 patients totalement édentés appareillés. Pour chaque sujet sont obtenus trois modèles maxillaires et trois modèles mandibulaires : (1) un modèle de référence issu de l'intrados et des bords de la prothèse existante, (2) un modèle issu de la technique d'empreinte de réfection employant la pression occlusale du patient, (3) un modèle issu de la technique d'empreinte de réfection utilisant la pression digitale du praticien. Une analyse géométrique tridimensionnelle des modèles dans un repère commun a été entreprise avec un capteur optique 3D. Pour chaque modèle, les coordonnées des points barycentres et des points hauts ont été déterminés. Les différences entre les coordonnées des points barycentres des trois modèles de chaque patient ont été calculées et comparées 2-à-2. Le même calcul a été entrepris pour les coordonnées des points hauts. Afin de déterminer si ces déplacements étaient statistiquement significatifs, un test non paramétrique de Wilcoxon a été utilisé (p<0,05). Des cartographies comparatives des écarts entre les modèles d'un même patient ont également été effectuées. Résultats. Au maxillaire, le déplacement de l'ensemble surface d'appui-prothèse était, essentiellement vertical et plus important avec l'empreinte sous pression digitale que sous pression occlusale. Par contre, à la mandibule, le déplacement de l'ensemble surface d'appui-prothèse était très modéré pour les deux techniques d'empreintes. Conclusion. L'empreinte de réfection sous pression digitale est recommandée à la mandibule alors que l'empreinte sous pression occlusale doit être préférée au maxillaire.The purpose of this study is to analyze and compare two complete denture reline technique, one occluding and one digital, to determine which resulted in less displacement of tissue-complete denture base interface during impression making. Materials and methods. The experiment included 10 completely edentulous subjects. For each subject, three mandibular casts were obtained : (1) a reference cast of existing denture base, (2) a cast made with an occluding reline impression technique, and (3) a cast made with a digital reline impression technique. With the use of an optical 3-dimensional measurement system, the corresponding casts in a common coordinate system were analyzed geometrically. For each cast, the coordinates of the barycentric point and high point were determined. For the same subject, the difference between the coordinates of the barycentric points of the three casts were calculated 2-by-2. The same calculation was performed for the high points. To determine whether these differences, which represent the displacements of the barycentric points and high points, were statistically significant, the Wilcoxon signed-rank test for paired group comparisons was applied (P<0,05). Cartographic differences among the casts from the same subjects also were compared. Results. In the maxillary , the analysis of the displacement of the tissue-denture base interface was mainly vertical and more important under digital impression technique than under occluding impression technique. In contrast, in the mandibular arch, the displacement of the tissue-denture base interface was roughly of the same magnitude regardless of the impression technique used. Conclusion. The digital reline impression technique is recommended at the mandible while the occluding impression technique has to be prefered at the maxillary.MONTROUGE-BUFR Odontol.PARIS5 (920492101) / SudocORSAY-PARIS 11-BU Sciences (914712101) / SudocSudocFranceF
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
Forces de rétention et usure des attachements en prothèse amovible complète supra-implantaire (données de la littérature)
No full textMONTROUGE-BUFR Odontol.PARIS5 (920492101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF
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
Intérêt de la kinésithérapie maxillo-faciale dans le traitement des dysfonctions temporo-mandibulaires
No full textMONTROUGE-BUFR Odontol.PARIS5 (920492101) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF
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