Background: Repair of defective composite resins restorations is being increasingly recognized as a viable alternative to replacement. there is however no consensus yet on the treatment protocol.
Objective: To determine the views and practice of specialists in Conservative Dentistry in Nigeria as regard to repair procedure of defective composite resin restorations.
Methods: A cross sectional study was conducted among conservative dentists in Nigeria using anonymous structured and open-ended questionnaire as instrument for data collection, the data collected were: socio demographic variables; views and practice of the respondents as regards the indications, benefits and longevity of composite resins repair treatment option and type of surface preparation usually employed, summary statistics was performed.
Results: The respondents comprise 9 (37.5%) males and 15 (62.5%) females. Marginal defect (91.7%) was the strongest indication and preservation of tooth structure (95.8%) was regarded as the topmost benefit, majority of the respondents (75.0%) considered repair procedure as a definitive treatment and etching with phosphoric acid was the most utilized surface preparation (87.5%).
Conclusion: The views and practice of the respondents is in the literature.
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Nano Lett
January 2025
National Innovation Center for Industry-Education Integration of Energy Storage Technology, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
Rechargeable magnesium ion batteries (RMBs) have drawn extensive attention due to their high theoretical volumetric capacity and low safety hazards. However, divalent Mg ions suffer sluggish mobility in cathodes owing to the high charge density and slow insertion/extraction kinetics. Herein, it is shown that an ultrafast nonequilibrium high-temperature shock (HTS) method with a high heating/quenching rate can instantly introduce oxygen vacancies into the olivine-structured MgFeSiO cathode (MgFeSiO-HTS) in seconds.
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December 2024
Wake Forest University School of Medicine, Winston-Salem, NC, USA.
Background: Vascular-based dementia risk scores (VDRS) which reliably predict risk of Alzheimer's disease and related dementias (ADRDs), may be useful to identify at-risk individuals for secondary prevention trials. Dementia risk scores have typically focused on predicting ADRD-associated symptoms, with fewer studies assessing capacity for detecting individuals with underlying brain pathologies. We compare the predictive value of two vascular-based risk scores (CAIDE and Reitz VDRSs) for discriminating AD-related histopathological and structural abnormalities, further considering race and gender differences.
View Article and Find Full Text PDFInorg Chem
January 2025
Institute of Low Temperature and Structure Research, PAS, Okolna 2, 50-422 Wroclaw, Poland.
This paper discusses the origin of emission quenching in yttrium orthovanadate codoped with Eu and Sb ions. Highly crystalline yttrium orthovanadate nanoparticles with chemical composition YEuSbVO ( = 0-5.4 mol %, = 0-2.
View Article and Find Full Text PDFHeliyon
November 2024
School of Finance - Accounting, Industrial University of Ho Chi Minh City, Hochiminh City, Viet Nam.
This study aims to evaluate the impact of factors representing the Board of Directors (BOD) and Audit Committee (AC) on financial information transparency (FIT) in a frontier market. FIT is measured through three indicators that reflect financial non-transparency: earnings aggressiveness (EA), earnings smoothing (ES) and loss avoidance (LA). Research data was collected from 338 companies listed on the Vietnam Stock Exchange (HOSE and HNX) from 2012 to 2022.
View Article and Find Full Text PDFACS Nano
January 2025
NanoScience Technology Center, Department of Materials Science and Engineering, Department of Chemistry, Renewable Energy and Chemical Transformation Cluster, The Stephen W. Hawking Center for Microgravity Research and Education, University of Central Florida, Orlando, Florida 32826, United States.
Advanced electromagnetic interference (EMI) shielding materials are in great demand because of the severe electromagnetic population problem caused by the explosive growth of advanced electronics. Besides superior EMI shielding properties, the mechanical strength of the shielding materials is also critical for some specific application scenarios (e.g.
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