Background: Color matching and stability are the essential considerations in restorative dentistry, as they contribute to the longevity and esthetic appeal of the restorations. Composites with nanoparticles and more filler content are anticipated to be more color-stable.
Aim: The aim of the study was to assess and contrast the color stability of esthetic restoration materials following exposure to various antioxidant beverages.
Materials And Methods: A Class V cavity was prepared on the buccal surface of 40 maxillary premolars. The specimens were divided into two groups: microhybrid (MH) and nanohybrid (NH) composite. The baseline color of each tooth sample was measured and then, the samples were categorized into four subgroups based on the immersion solution (pomegranate juice, beetroot juice, black plum juice, and distilled water) and evaluated on day 1, day 7, day 14, and day 21 using a spectrophotometer-based on CIE L*a*b* color scale. For spectrophotometer analysis, CIE XYZ data were obtained and converted to CIELAB. The samples mean difference in ΔE values before and after being immersed in various beverages.
Statistical Analysis: The data were statistically analyzed using an independent -test and one-way analysis of variance.
Results: MH and NH composite materials showed color change after being exposed to the test beverages.
Conclusion: MH composite causes more color change than NH composite at all-time intervals. Black plum showed the greatest discoloration in both composites.
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http://dx.doi.org/10.4103/JCDE.JCDE_55_24 | DOI Listing |
Clin Neuropsychol
December 2024
Center for Language and Brain, HSE University, Moscow, Russia.
The Rey Auditory Verbal Learning Test (RAVLT) is a classic test used to assess episodic verbal memory in research and clinical practice. We aimed to adapt the RAVLT materials into Russian, provide performance norms across the adult lifespan for the Russian adaptation, and develop a mobile application for automated RAVLT administration across languages. We created three psycholinguistically matched alternative versions of the RAVLT materials in Russian and incorporated them into a new tablet application.
View Article and Find Full Text PDFAllergy Asthma Proc
January 2025
2nd Respiratory Department, Attikon University Hospital, National and Kapodistrian University of Athens Medical School, Athens, Greece.
Remission of asthma can occur as part of the natural history of the disease; however, the use of biologics can result in disease remission in some patients. In this post hoc analysis of the RELIght study, we aimed to evaluate clinical remission in real life among patients treated with mepolizumab, to detect possible differences between "remitters" and "nonremitters," and to evaluate possible predictors of remission. Clinical remission was defined as the absence of asthma exacerbations, discontinuation of oral corticosteroids (OCS), achievement of asthma control (Asthma Control Test [ACT] ≥ 20), and stable or improved lung function.
View Article and Find Full Text PDFAllergy Asthma Proc
January 2025
Division of Pediatric Medicine, Naval Medical Center Portsmouth, Portsmouth, Virginia.
Unconfirmed penicillin allergies over time lead to poor health outcomes and increased health-care cost. Health disparities (HD) can create barriers in optimizing penicillin allergy care. The objective was to characterize HDs in our primary care-led amoxicillin challenge (PLAC) delabeling pathway within a universal coverage health care system.
View Article and Find Full Text PDFBMC Psychol
December 2024
Department of Psychosocial Science, University of Bergen, Christies gate 12. 5015, P.O. Box 7807, Bergen, NO-5020, Norway.
Background: Bicycle messengers in the online food delivery sector typically work on an on-demand basis, have digitally mediated relationships with their employer, and have very limited labor rights. In this study, we explore how bicycle messengers themselves experience their workday and how platform work influences their identity and wellbeing.
Method: We conducted qualitative interviews with ten bicycle messengers working for Foodora and Wolt in Bergen and Oslo, Norway.
Breast Cancer Res
December 2024
Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, 22908, USA.
Background: Primary luminal breast cancer cells lose their identity rapidly in standard tissue culture, which is problematic for testing hormone interventions and molecular pathways specific to the luminal subtype. Breast cancer organoids are thought to retain tumor characteristics better, but long-term viability of luminal-subtype cases is a persistent challenge. Our goal was to adapt short-term organoids of luminal breast cancer for parallel testing of genetic and pharmacologic perturbations.
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