Techniques d'anesthésies locales et loco-régionales en odontologie (méthode pédagogique sur CD-ROM)

Le souci de prévenir et d apaiser les douleurs dentaires est au cœur de l exercice quotidien du chirurgien dentiste. La maîtrise de l acte anesthésique est la clé pour permettre au chirurgien dentiste de pratiquer son art en toute quiétude. Après des rappels anatomiques, physiologiques et pharmacologiques, nous étudions les différentes techniques d anesthésies locales et loco-régionales couramment utilisées en odontologie. Les complications rencontrées, ainsi que les pathologies à prendre en compte sont ensuite détaillées. Un CD-ROM pédagogique, comprenant des illustrations, des animations et des vidéos nécessaires à la bonne compréhension de l anatomie et des techniques, regroupe les éléments essentiels de cet exposé.NANTES-BU Médecine pharmacie (441092101) / SudocPARIS-BIUM (751062103) / SudocLILLE2-UFR Odontologie (593502202) / SudocNANTES-Bib.Odontologie (441092219) / SudocSudocFranceF

A parametric study assessing Implicit Solver limits for a generic FEM Simulation of PTA without stent deployment

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Influence of plaque geometry and composition on numerically simulated balloon angioplasty outcomes

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Endosymbiont diversity among sibling weevil species competing for the same resource

International audienceBACKGROUND: Whereas the impact of endosymbionts on the ecology of their hosts is well known in some insect species, the question of whether host communities are influenced by endosymbionts remains largely unanswered. Notably, the coexistence of host species competing with each other, which is expected to be stabilized by their ecological differences, could be facilitated by differences in their endosymbionts. Yet, the composition of endosymbiotic communities housed by natural communities of competing host species is still almost unknown. In this study, we started filling this gap by describing and comparing the bacterial endosymbiotic communities of four sibling weevil species (Curculio spp.) that compete with each other to lay eggs into oak acorns (Quercus spp.) and exhibit marked ecological differences. RESULTS: All four species housed the primary endosymbiont Candidatus Curculioniphilus buchneri, yet each of these had a clearly distinct community of secondary endosymbionts, including Rickettsia, Spiroplasma, and two Wolbachia strains. Notably, three weevil species harbored their own predominant facultative endosymbiont and possessed the remaining symbionts at a residual infection level. CONCLUSIONS: The four competing species clearly harbor distinct endosymbiotic communities. We discuss how such endosymbiotic communities could spread and keep distinct in the four insect species, and how these symbionts might affect the organization and species richness of host communities

Experimental protocol to evaluate lung parenchyma properties under inflation

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Towards a patient-specific simulation of the balloon angioplasty treatment technique

International audienceThis work addresses the issue of patient specific (PS) simulation of balloon angioplasty (BA). As a further step towards an ideal BA simulation scenario, this study focuses on two main issues: material modeling using plastic constitutive law to imitate the plaque permanent deformation and segmentation of the CT images to extract PS 3D geometry of the stenosed artery

Développement d'une simulation numérique élastoplastique de la dilatation d'une artère sténosée

International audienceL'athérosclérose est l'une des pathologies artérielles les plus fréquentes. L'Angioplastie Transluminale Percutanée (ATP) permet de restaurer au mieux la lumière artérielle en induisant une déformation résiduelle de la plaque lors du gonflement d'un ballon dans l'artère sténosée. Notre objectif est de simuler par éléments finis cette déformation résiduelle en considérant une loi de comportement plastique pour la plaque. Le gain radial de la lumière est évalué en fonction de la nature de la plaque (lipidique ou calcifiée) et de sa géométrie (axisymétrique ou non-axisymétrique)

Finite element simulation of the insertion of guidewires during an EVAR procedure: example of a complex patient case, a first step toward patient-specific parameterized models

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