Dental Implant Failure Rate and Marginal Bone Loss in Smokers Compared to Non-Smokers: A Systematic Review and Meta-Analysis

Background:Although dental implant therapy is considered a predictable treatment modality with reported high survival and success rates, biological complications do occur, and a number of risk factors have been involved. Tobacco smoking is related to many health risks affecting general & oral health. Objectives: The aim of this systematic review and meta-analysis is to test the null hypothesis of no difference in dental implant failure rates and marginal bone loss between smokers and non-smokers with regards to follow-up time. Search methods: An extensive electronic search was performed in PubMed, Scopus and EBSCOhost Dentistry and Oral Sciences source to identify relevant articles published up to June 2019. The eligibility criteria included randomized and non-randomized clinical trials & prospective & retrospective observational studies. After a thorough selection process, 23 papers were included. The meta-analysis was expressed in terms of the odds ratio (OR) or standardized mean difference (SMD) with a confidence interval (CI) of 95% and the level of statistical significance was set at P \u3c 0.05. Results: There was a statistically significant difference in marginal bone loss favoring the non-smoking group with a SMD of 1.07 (95% CI 0.67–1.48), demonstrating a statistically significant difference in favor of non-smokers (P Author’s conclusion: Based on the results of this review, the null hypothesis is rejected, and that is in agreement with other reports in the literature. Therefore, the clinical recommendation for a period of abstinence from smoking that at least covers the pre-surgical evaluation & initial therapy, definite implant treatment & immediate post-op phases remains to be very relevant

Update on the Scientific Status of the Plasma Focus

This paper is a sequel to the 1998 review paper “Scientific status of the Dense Plasma Focus” with 16 authors belonging to 16 nations, whose initiative led to the establishment of the International Center for Dense Magnetized Plasmas (ICDMP) in the year 2000. Its focus is on understanding the principal defining characteristic features of the plasma focus in the light of the developments that have taken place in the last 20 years, in terms of new facilities, diagnostics, models, and insights. Although it is too soon to proclaim with certainty what the plasma focus phenomenon is, the results available to date conclusively indicate what it is demonstrably not. The review looks at the experimental data, cross-correlated across multiple diagnostics and multiple devices, to delineate the contours of an emerging narrative that is fascinatingly different from the standard narrative, which has guided the consensus in the plasma focus community for several decades, without invalidating it. It raises a question mark over the Fundamental Premise of Controlled Fusion Research, namely, that any fusion reaction having the character of a beam-target process must necessarily be more inefficient than a thermonuclear process with a confined thermal plasma at a suitably high temperature. Open questions that need attention of researchers are highlighted. A future course of action is suggested that individual plasma focus laboratories could adopt in order to positively influence the future growth of research in this field, to the general benefit of not only the controlled fusion research community but also the world at large

Body appreciation around the world: Measurement invariance of the Body Appreciation Scale-2 (BAS-2) across 65 nations, 40 languages, gender identities, and age

The Body Appreciation Scale-2 (BAS-2) is a widely used measure of a core facet of the positive body image construct. However, extant research concerning measurement invariance of the BAS-2 across a large number of nations remains limited. Here, we utilised the Body Image in Nature (BINS) dataset - with data collected between 2020 and 2022 - to assess measurement invariance of the BAS-2 across 65 nations, 40 languages, gender identities, and age groups. Multi-group confirmatory factor analysis indicated that full scalar invariance was upheld across all nations, languages, gender identities, and age groups, suggesting that the unidimensional BAS-2 model has widespread applicability. There were large differences across nations and languages in latent body appreciation, while differences across gender identities and age groups were negligible-to-small. Additionally, greater body appreciation was significantly associated with higher life satisfaction, being single (versus being married or in a committed relationship), and greater rurality (versus urbanicity). Across a subset of nations where nation-level data were available, greater body appreciation was also significantly associated with greater cultural distance from the United States and greater relative income inequality. These findings suggest that the BAS-2 likely captures a near-universal conceptualisation of the body appreciation construct, which should facilitate further cross-cultural research

Exposure and Connectedness to Natural Environments: An Examination of the Measurement Invariance of the Nature Exposure Scale (NES) and Connectedness to Nature Scale (CNS) Across 65 Nations, 40 Languages, Gender Identities, and Age Groups

International audienceDetachment from nature is contributing to the environmental crisis and reversing this trend requires detailed monitoring and targeted interventions to reconnect people to nature. Most tools measuring nature exposure and attachment were developed in high-income countries and little is known about their robustness across national and linguistic groups. Therefore, we used data from the Body Image in Nature Survey to assess measurement invariance of the Nature Exposure Scale (NES) and the Connectedness to Nature Scale (CNS) across 65 nations, 40 languages, gender identities, and age groups (N = 56,968). While multi-group confirmatory factor analysis (MG-CFA) of the NES supported full scalar invariance across gender identities and age groups, only partial scalar invariance was supported across national and linguistic groups. MG-CFA of the CNS also supported full scalar invariance across gender identities and age groups, but only partial scalar invariance of a 7-item version of the CNS across national and linguistic groups. Nation-level associations between NES and CNS scores were negligible, likely reflecting a lack of conceptual clarity over what the NES is measuring. Individual-level associations between both measures and sociodemographic variables were weak. Findings suggest that the CNS-7 may be a useful tool to measure nature connectedness globally, but measures other than the NES may be needed to capture nature exposure cross-culturally