1,273 research outputs found
Rigenerazione guidata dei tessuti in osteointegrazione II - Siti post-estrattivi
No full textLa possibilità di inserire impianti in siti post-estrattivi immediatamente dopo l'avulsione dell'elemento dentario comporta il vantaggio di ridurre il tempo di trattamento e di eliminare il riassorbimento di osso alveolare che avviene dopo ogni avulsione. Le tecniche di rigenerazione guidata dei tessuti sono state proposte da vari Autori al fine di impedire la colonizzazione da parte dei tessuti connettivo ed epiteliale dello spazio tra impianto e pareti dell'alveolo residuo. In questo lavoro vengono descritte due tecniche chirurgiche che prevedono la prima una esposizione precoce della membrana al cavo orale, la seconda una completa copertura della membrana per tutto il periodo di guarigione. I dati ottenuti con le due tecniche sono comparati sotto il profilo biometrico e le membrane esposte vengono esaminate al SEM ed al TEM dal punto di vista microbiologico ultrastrutturale. La tecnica che prevede la completa copertura della membrana per tutto il periodo di permanenza in situ ha fornito i risultati più soddisfacenti.The possibility to introduce implants in fresh extraction sockets offers the advantage of shortening the treatment period and limiting alveolar bone resorption after extraction. Several authors suggested guided tissue regeneration to prevent connective and epithelial tissue proliferation between implant and the residual alveolar space. The present work describes two different surgical techniques. In the former the membrane is exposed soon after placement in the buccal cavity. The later on the contrary is performed with complete closure of the membrane for the whole healing period. The results obtained with both techniques are compared according to their biometrical aspect and the exposed membranes are observed at SEM and TEM with reference to their microbiological structure. The procedure with complete covering of the membrane for the whole healing period gave the most satisfactory results
Jawbone enlargement using immediate implant placement associated with a split-crest technique and guided tissue regeneration.
No full textFive patients with sufficient vertical bone height but insufficient bone width for implant placement were chosen for treatment with a split-crest technique combined with guided tissue regeneration. The surgical technique involved splitting the alveolar ridge longitudinally in two parts, provoking a greenstick fracture. A chisel was then used to make a fine cut and spread apart the two cortical plates. Implants were then placed. Implants and defects were covered with expanded polytetrafluoroethylene membranes. Biometrical examination showed a gain in bone width, varying between 1 and 4 mm; maxillary sites showed greater ridge enlargement. Histologic examination showed regeneration of bone tissue between the two portions of the split crest. This membrane technique could be effective and predictable for horizontal ridge augmentation associated with immediate implant placement
Procalcitonin levels in surgical patients at risk of candidemia.
No full textAlthough the majority of cases of sepsis in intensive care unit (ICU) patients are due to bacterial infection, fungal infections are common and their early identification is important so that appropriate treatment can be started. Biomarkers have been used to aid diagnosis of bacterial infections, but their role in fungal infections is less defined. In this study we assessed the value of procalcitonin (PCT) levels for the diagnosis of candidemia or bacteremia in septic patients.Journal ArticleSCOPUS: ar.jinfo:eu-repo/semantics/publishe
A comparative study of the effectiveness of e-PTFE membranes with and without early exposure during the healing period.
No full textThis study compared clinical, microbiologic, and morphostructural aspects of the healing process in clinical cases treated with expanded polytetrafluoroethylene membranes placed in fresh extraction sockets, which did or did not show early membrane exposure. The examination was focused particularly on morphology of the microbic population and its ability to penetrate membrane pores. Results of the study suggest that use of the membranes is effective in the treatment of fresh extraction sockets with osseointegrated implants; that the membranes are highly biocompatible with gingival tissues; and that early exposure of the membranes during healing hinders the effectiveness of guided tissue regeneration in periimplant tissues
Correction to: When terminology hinders research: the colloquialisms of transitions of control in automated driving (Cognition, Technology & Work, (2022), 10.1007/s10111-022-00705-3)
No full textIn the original article, author affiliation published with error. The correct affiliations are: Davide Maggi—Institute for Transport Studies, Leeds, UK. Richard Romano—Institute for Transport Studies, Leeds, UK. Oliver Carsten—Institute for Transport Studies, Leeds, UK. Joost C. F. De Winter—Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Delft, The Netherlands. The original article has been corrected.Human-Robot Interactio
Admiel Kosman, Siamo giunti a Dio
No full textInternational audienceSix poems from Israeli poet Admiel Kosman translated from the Hebrew into Italian. Selection of poems, presentation of the author, translation and notes by Davide Mano
Admiel Kosman, Siamo giunti a Dio
No full textInternational audienceSix poems from Israeli poet Admiel Kosman translated from the Hebrew into Italian. Selection of poems, presentation of the author, translation and notes by Davide Mano
Starchitecture: Scenes, Actors and Spectacles in Contemporary Cities
No full textHow and why do spectacular buildings get commissioned and procured? What are their visible urban effects? What can urban planners, architects, and policymakers learn in order to engage in more successful citymaking?
In recent years, media and critical attention has been lavished on famous architects, and the contributions of their designs to the branding of cities. The post-“Bilbao effect” global landscape is one where cities compete for the highest-profile skyscrapers, cultural projects, and high-profile developments designed by star architects whom even casual readers know by first name: Frank Gehry, Bjarke Ingels, Jean Nouvel, Zaha Hadid, Norman Foster, Rem Koolhaas. Far less is known about the decision-making processes behind these projects and their subsequent urban effects.
A unique combination of urban studies and photography, Starchitecture investigates projects designed by star architects in cities including Paris, New York, Abu Dhabi, Bilbao, and the architectural microcosm of the Vitra campus in Weil am Rhein, Germany. Author Davide Ponzini and photographer Michele Nastasi seek to explain and critique a growing global condition by revealing how starchitecture has been and continues to be deployed in cities around the world. The arguments they raise are vital to understanding the urban landscapes of today, and tomorrow
The “Weekday Effect” on Enhanced Recovery after Surgery Protocol for Gastrectomy
No full textIntroduction: While enhanced recovery after surgery (ERAS) protocol demonstrated to improve outcomes after gastrectomy, some papers evidenced a detrimental effect on postoperative morbidity related to the "weekday effect." We aimed to understand whether the day of gastrectomy could affect postoperative outcomes and compliance with ERAS items. Methods: We included all patients that underwent gastrectomy for cancer between January 2017 and September 2021. Cohort was divided considering the day of surgery: Early group (Monday-Wednesday) and Late group (Thursday-Friday). Compliance with protocol and postoperative outcomes were compared. Results: Two hundred twenty-seven patients were included in Early group, while 154 were in Late group. The groups were comparable in preoperative characteristics. No significant difference in pre/intraoperative and postoperative ERAS items' compliance was apparent between Early and Late groups, with most items exceeding the 70% threshold. Median length of stay was 6.5 days and 6 days in Early and Late groups (p = 0.616), respectively. Morbidity was 50% in both groups, with severe complications that occurred in 13% of Early patients and 15% of Late patients. Ninety-day mortality was 2%, and it was similar between the two groups. Conclusions: In a center with a standardized ERAS protocol, the weekday of gastrectomy has no significant impact on the success of each ERAS item and on postoperative surgical and oncological outcomes
Design and characterization of a fractal-inspired multi-frequency piezoelectric energy converter
No full textA promising harvesting technique, in terms of simplicity and efficiency, is the conversion of ambient kinetic energy through piezoelectric materials. This work aims to design and investigate a piezoelectric converter conform to a fractal-inspired, multi-frequency structure previously presented by the author. A physical prototype of the converter is built and experimentally examined, up to 120 Hz, in terms of modal response and power output. Three eigenfrequencies are registered and the power output is particularly good at the fundamental eigenfrequency. Also the effect of the resistive load applied to the converter is investigated
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