Osteogenic distraction to treat solitary median maxillary central incisor syndrome: a case report

A síndrome do incisivo central superior médio solitário (SICSMS) é uma doença de desenvolvimento rara caracterizada por um único incisivo central superior simétrico. A literatura tem relatado poucos casos com tratamento dentário abrangente. Nenhum tratamento cirúrgico foi proposto até o momento. Relatamos o caso de uma menina de oito anos de idade inicialmente tratada com expansão rápida da maxila. Após o fracasso de duas expansões rápidas da maxila, a paciente foi tratada com sucesso com distração osteogénica aos 12 anos de idade. A distracção, associada a um tratamento ortodôntico fixo multi-brackeado, criou espaço suficiente para colocar um incisivo central protético sem extracções dentárias. A distracção osteogénica é uma opção interessante para tratar pacientes com SICSMS.Solitary median maxillary central incisor syndrome (SMMCI) is a rare developmental disorder characterized by a single symmetrical maxillary central incisor. The literature has reported few cases with comprehensive dental treatment. No surgical treatment has been proposed before. We report the case of an eight-year-old girl initially treated with rapid maxillary expansion. After the failure of two rapid maxillary expansions, the patient was successfully treated with osteogenic distraction at the age of 12 years old. The distraction, associated with ultibracketed fixed orthodontic treatment, created enough space to place a prosthetic central incisor without dental extractions. Osteogenic distraction is an interesting option to treat patients with SMMCI

Jacobi Structures in R3\mathbb{R}^3

The most general Jacobi brackets in $\mathbb{R}^3$ are constructed after solving the equations imposed by the Jacobi identity. Two classes of Jacobi brackets were identified, according to the rank of the Jacobi structures. The associated Hamiltonian vector fields are also constructed

A Generalization of Poisson-Nijenhuis Structures

We generalize Poisson-Nijenhuis structures. We prove that on a manifold endowed with a Nijenhuis tensor and a Jacobi structure which are compatible, there is a hierarchy of pairwise compatible Jacobi structures. Furthermore, we study the homogeneous Poisson-Nijenhuis structures and their relations with Jacobi structures.Comment: 21 pages, Late

Manufacturing complexity evaluation at the design stage for both machining and layered manufacturing

International audienceIn this paper, a methodology to estimate manufacturing complexity for both machining and layered manufacturing is proposed in order to realize tools (dies or molds) by a combination of a subtractive and an additive process. Manufacturability indexes are calculated at the tool design stage, these indexes provide an accurate view of which areas of the tool will advantageously be machined or manufactured by an additive process. In this case, tools are not seen as single pieces but as 3-D puzzles with modules, manufactured aside by the best process and further assembled

100 minutes pour convaincre : l'éthos en action de Nicolas Sarkozy

International audienceCet article revisite la notion d'éthos dans une perspective interactive et polysémiotique, et l'applique au personnage de N. Sarkozy en analysant un extrait de débat politique télévisé de l'émission "100 minutes pour convaincre"

Diagnostic prénatal et diagnostic pré-implantatoire : arbre décisionnel, nouvelles pratiques ?

Le diagnostic pré-implantatoire (DPI) a pour objectif l’étude des caractéristiques génétiques d’un embryon âgé de trois jours. Il offre ainsi à des couples ayant un risque élevé de transmettre une maladie héréditaire une alternative au diagnostic prénatal (DPN). Si, au début de son application, les pathologies et les couples pris en charge ainsi que le cadre réglementaire du DPI étaient très proches de ceux du DPN, des indications propres au DPI émergent peu à peu. Les pathologies prises en charge, notamment, se diversifient, en particulier dans les pays où l’absence de réglementation autorise toutes les pratiques. Certaines de ces applications ne sont d’ailleurs pas sans poser de sérieux problèmes éthiques. Même en France, où cette activité est particulièrement encadrée, la récente modification de la loi reflète cette évolution.Preimplantation genetic diagnosis (PGD) purpose is to assess the genetic status of 3 day-old embryos. PGD offers thus to couples « at-risk » of a genetic disorder an earlier option to prenatal diagnosis (PND). At the beginning, PGD’s indications, patients and law were very closed to PND, but PGD specificities are gradually raising. Particularly, indications vary considerably in countries where the absence of law authorizes all the practices. Some of these applications are moreover raising serious ethical issues. Even in France, where this activity is particularly supervised, the recent modification to the law marks this evolution

Environmental performance modeling for additive manufacturing processes

International audienceSustainability means considering economic, social and environmental aspects. In the mechanical product design field, sustainability means thinking about eco-design and life cycle analysis, when the whole life cycle of the product (from raw material extraction to end of life) is concerned with environmental impacts. Nowadays, most of the manufacturing methods are driven only by money, and the environmental and social aspects are not taken into account. The goal of this paper is to propose an environmental assessment methodology of the manufacturing processes. In this methodology, all flows consumed and produced (material, fluids, electricity) are considered. A predictive model of flow consumption is defined from the CAD model of the product and the manufacturing program. The aim is to be able to minimize the environmental impacts of the manufacturing during the design stage. In this paper, the focus is put on additive manufacturing

Raphaël Micheli, L’émotion argumentée. L’abolition de la peine de mort dans le débat parlementaire français

Cet ouvrage de près de 500 pages se présente comme une défense et illustration de l’idée selon laquelle « les émotions contiennent une dimension intrinsèquement argumentable, qu’il est possible d’observer dans la matérialité du discours ». Plus généralement, « la capacité des émotions à générer des désaccords et leur propension à être argumentées par les locuteurs » constitueraient même « un aspect essentiel au fonctionnement des débats de société ». Cette thèse est elle-même très solidement ..