15 research outputs found

    Survival Rate of CAD–CAM Endocrowns Performed by Undergraduate Students

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    International audienceSUMMARY Objectives: This study aimed to evaluate the success of computer-aided design–computer-aided manufacturing (CAD–CAM) endocrown restorations of endodontically treated teeth (ETT) performed by supervised undergraduate students. The study also intended to identify possible factors that may lead to failures. Methods and Materials: This observational open cohort study was based on clinical data from endocrown restorations performed by residents and undergraduate students in their 4th, 5th, and 6th year from July 2011 to May 2018. The presence of a tooth with an endocrown on the arch was the main criteria used to calculate the survival rate of restored teeth. The quality of the remaining endocrowns was evaluated referring to the FDI criteria. The cases of failure were categorized into either favorable or unfavorable. Results: A total of 343 ETT were restored with endocrowns in 315 patients. Among them, 199 patients encompassing 225 endocrowns were followed during a 56 ± 26 month period. The survival rate of restored teeth was found to be 81.8%, the estimated Kaplan–Meier survival rate being 71.8% at 9 years. Among the 41 failed cases, 32 were favorable (debonding and/or ceramic fractures) and 9 were unfavorable. Conclusion: Endocrown restorations of posterior ETT using CAD–CAM technologies could be carried out by undergraduates with a low risk of failure. Teacher supervision could be reinforced, covering all steps of each endocrown procedure in order to avoid failures due to insufficient thickness or loss of retention

    Diversité de l'élevage en Auvergne : un levier de durabilité pour la transition agroécologique

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    Projet de recherche du programme PSDR Auvergne 2015-2020National audienceAlors que de nombreuses rĂ©gions françaises se sont fortement spĂ©cialisĂ©es, l’Auvergne a partiellement rĂ©sistĂ© Ă  cette Ă©volution et se caractĂ©rise par une diversitĂ© encore importante de ses systĂšmes d’élevage d’herbivores. Cette diversitĂ© tend nĂ©anmoins Ă  s’éroder, et cela alors mĂȘme que la prĂ©servation et la valorisation de la diversitĂ© est mise en avant dans le cadre de la transition agroĂ©cologique. Les professionnels de l’élevage et les Ă©lus rĂ©gionaux sont dĂ©jĂ  sensibilisĂ©s Ă  la diversitĂ© de l’élevage et Ă  son intĂ©rĂȘt pour l’avenir du secteur. Les fonctions, intĂ©rĂȘts et dynamiques de cette diversitĂ© restent cependant peu connus, et la sensibilisation des filiĂšres avals et de certains acteurs des territoires est rĂ©cente
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