Optimism and resilience among university students

University life is full of stressful stimuli that can contribute to psychological distress and lower performance levels. Despite academic demands, university students also face new stressors, such as different social networks, financial changes, and adaptation to new family and social roles that may have a negative impact on their mental health (Pidgeon y Pickett, 2017). In this sense, resilience literature has gained acceptance explaining how some students successfully adapt to university life while others find great challenges. Since resilience has been defined as the ability to successfully adapt in the face of stress and adversity, it is important to determine what psychological factors contribute enhancing this resilience levels. One of the factors related to life adaptation is optimism, understood as the general expectancy of obtaining positive outcomes in the future (Scheier y Carver, 1985). Hence, the aim of this study is to study the relationship between optimism and resilience among a sample of university students in Spain.The sample was comprised of 132 students from the University of Cádiz (Spain). Participants were selected by quota sampling from first to last year of studies. The majority of students (72.5%) were female and average age was 21.71 (range = 18–48, SD = 3.75). Participants completed the Wagnild and Young Resilience Scale (Spanish version adapted by Novella, 2002) and Life Orientation Test (LOT-R Spanish version adapted by Ferrando, Chico y Tous).We performed hierarchical multiple regression analysis and obtained that optimism explained 25% of resilience among university students (R2 = .25, â = .49). No gender and age differences were observed. Thus, identifying the factors that influence students’ adjustment to university life can improve the targeting of interventions to improve university academic performance. Moreover, this research could contribute helping students to successfully face this life transition, increasing their well-being and life satisfaction levels and decreasing university absenteeism

Effect of Fabrication Technique on the Microgap of CAD/CAM Cobalt-Chrome and Zirconia Abutments on a Conical Connection Implant: An In Vitro Study.

The aim of this in vitro study was to investigate the microgaps at the implant-abutment interface when zirconia (Zr) and CAD/CAM or cast Co-Cr abutments were used. METHODS Sixty-four conical connection implants and their abutments were divided into four groups (Co-Cr (milled, laser-sintered and castable) and Zirconia (milled)). After chewing simulation (300,000 cycles, under 200 N loads at 2 Hz at a 30° angle) and thermocycling (10,000 cycles, 5 to 50 °C, dwelling time 55 s), the implant-abutment microgap was measured 14 times at each of the four anatomical aspects on each specimen by using a scanning electron microscope (SEM). Kruskal-Wallis and pair-wise comparison were used to analyze the data (α = 0.05). RESULTS The SEM analysis revealed smaller microgaps with Co-Cr milled abutments (0.69-8.39 μm) followed by Zr abutments (0.12-6.57 μm), Co-Cr sintered (7.31-25.7 μm) and cast Co-Cr (1.68-85.97 μm). Statistically significant differences were found between milled and cast Co-Cr, milled and laser-sintered Co-Cr, and between Zr and cast and laser-sintered Co-Cr (p < 0.05). CONCLUSIONS The material and the abutment fabrication technique affected the implant-abutment microgap magnitude. The Zr and the milled Co-Cr presented smaller microgaps. Although the CAD/CAM abutments presented the most favorable values, all tested groups had microgaps within a range of 10 to 150 μm

Preliminary Study on the Assessment of the Marginal Fit of Three-Dimensional Methacrylate Oligomer Phosphine Oxide Provisional Fixed Dental Prostheses Made by Digital Light Processing

This article aimed to assess the marginal fit of methacrylate-oligomer-phosphine-oxide curable-resin provisional-fixed dental prostheses made by digital-light-processing (DLP) three-dimensional (3D) printing. A stainless-steel master model with two abutments was scanned, and five three-unit provisional bridges were designed and printed in VITA shade A3.5 curable resin in 50 µm-thick layers. The marginal fit of each abutment was measured at six points using a profile projector. A descriptive data analysis of the fit measurements was performed by descriptive and explorative processes with the SPSS software. The curable-resin provisional restorations made by DLP 3D printing reached values of 46.37 µm (SD: 29.58 µm), which were considered clinically acceptable, with values similar to polyethylene-methacrylate and polyether-ether-ketone provisional restorations