73 research outputs found

    Excess-entropy scaling in supercooled binary mixtures

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    Supercooled liquids near the glass transition show remarkable non-Arrhenius transport phenomena, whose origin is yet to be clarified. Here, the authors use GPU molecular dynamics simulations for various binary mixtures in the supercooled regime to show the validity of a quasiuniversal excess-entropy scaling relation for viscosity and diffusion

    A peer-mediated intervention to implement work and social abilities for adolescents with ASD: Pilot study

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    The peer-mediated intervention (PMI) is a very helpful tool in which peers are empowered to act as the intervention agents, implementing instructional programmes and behavioural interventions, and facilitating social interactions. PMI interventions work basically for the ability of peer to model and reinforce appropriate social behaviors of classmates with Autism Spectrum Disorder (ASD). The Laboratory of Autonomy is a novel intervention school-based program aimed at improving work abilities and social interactions in adolescents with ASD using behavioral strategies in a peer-mediated model. Typically developing peers (N=95) were trained and paired with adolescents with ASD (N=15; the trained peers to adolescent with ASD was essentially 3:1). Social interactions, social skills, adaptive behavior and work abilities were assessed before and after 6-month treatment, using observational procedures and parental measures. Results confirm that work abilities and social interactions increased significantly over the course of treatment. The school may be a fertile ground where adolescents with ASD may experience social interactions in a positive way if structured procedures and training are provided to peers

    Immediate placement and loading of dental implants: A human histologic case report

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    Background: The possibility of immediately loading postextraction implants was proposed recently. However, histologic evidence of osteointegration in such cases is still lacking. In this case report, two implants placed into fresh extraction sites, one immediately loaded and the other one unloaded, were compared clinically and histologically. Methods: Two teeth in need of extraction and localized in two symmetric quadrants of one patient were extracted, and dental implants were placed immediately into fresh extraction sites. One of them was connected with a heating abutment (control), whereas the other one was loaded immediately (test) with a resin crown in occlusion with the antagonist teeth. Clinical examinations were made, and radiographs were taken at follow-up visits. After 6 months, control and test implants were removed, together with the peri-implant bone, and a histomorphometric analysis was made. Results: Both implants appeared radiographically osseointegrated and clinically stable at retrieval. Mineralized tissue was found at the implant interface. The percentage of bone-to-implant contact in the control and test implants was 58% +/- 4.0% and 52% +/- 3.2%, respectively. In the loaded implant, a more compact, mature, well-organized peri-implant bone was found with many areas of remodeling and some osteons, whereas the bone tissue surrounding the unloaded implant was constituted of only thin bone trabeculae. Conclusions: Immediate loading did not seem to impair osseointegration of an immediate postextraction implant compared to an unloaded postextraction one. Further studies with a larger number of samples are needed to confirm these preliminary results

    Usefulness of light and electron microscopy in the diagnosis of nonalcoholic steatohepatitis (NASH).

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    Immediately Loaded Postextraction Implants: A Human Histologic Case Report

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    Objectives: The aim of this study was to clinically and histologically compare two implants placed into fresh extraction sites: one immediately loaded and the other one unloaded. Methods: Two teeth in need of extraction and localized in two symmetric quadrants were selected. Baseline clinical and radiographic exams were performed. Teeth were extracted and dental implants immediately inserted into fresh extraction sites. One of them was connected with a healing abutment (control), while the other one was immediately loaded (test) by a resin crown. Clinical and radiographic examinations were performed at follow-up visits. After six months both control and test implants were removed, together with the peri-implant bone, and histologically examined. Results: Both implants appeared radiographically osseointegrated and clinically stable at retrieval time. Mineralized tissue was found at the implant interface. The bone-to-implant contact percentage in the control and test implants was 58 ± 4.0% and 52 ± 3.2%, respectively. In the loaded implant a more compact, mature, well-organized peri-implant bone was found, with many remodelling areas and some osteons, whereas the bone tissue surrounding the unloaded implant was constituted only by thin bone trabeculae. Conclusions: Immediate loading did not seem to impair osseointegration of an immediately loaded postextraction implant, compared to an unloaded postextraction one. Further studies, with a larger number of samples, are needed to confirm these preliminary results

    Immediately Loaded Postextraction Implants: A Controlled Human Histologic Case Report

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    Objectives: The aim of this study was to clinically and histologically compare two implants placed into fresh extraction sites: one immediately loaded and the other one unloaded. Methods: Two teeth in need of extraction and localized in two symmetric quadrants were selected. Baseline clinical and radiographic exams were performed. Teeth were extracted and dental implants immediately inserted into fresh extraction sites. One of them was connected with a healing abutment (control), while the other one was immediately loaded (test) by a resin crown. Clinical and radiographic examinations were performed at follow-up visits. After six months both control and test implants were removed, together with the peri-implant bone, and histologically examined. Results: Both implants appeared radiographically osseointegrated and clinically stable at retrieval time. Mineralized tissue was found at the implant interface. The bone-to-implant contact percentage in the control and test implants was 58 ± 4.0% and 52 ± 3.2%, respectively. In the loaded implant a more compact, mature, well-organized peri-implant bone was found, with many remodelling areas and some osteons, whereas the bone tissue surrounding the unloaded implant was constituted only by thin bone trabeculae. Conclusions: Immediate loading did not seem to impair osseointegration of an immediately loaded postextraction implant, compared to an unloaded postextraction one. Further studies, with a larger number of samples, are needed to confirm these preliminary results
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