bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Staining Solutions on the Color Stability of Conventional and Bulk Fill Nanohybrid Resin Composites: A Spectrophotometric Analysis
Authors: Thumu Jayaprakash , Kadiyala Anirudh , Bollu Indira Priyadarshini , Ballullaya Srinidhi Vishnu , Devalla Srihari 
Published: May 2017

ABSTRACT

Aim
This study is aimed to evaluate the effect of staining solutions on the color stability of bulk fill and conventional nanohybrid resin composites (RCs) when subjected to various immersion periods.

Materials and methods
A total of 120 cylindrical Teflon molds (4 × 4 mm) were obtained and divided into four groups of 30 each. Molds of groups I and II were filled with Tetric N Ceram Bulk Fill (Ivoclar Vivadent, Schaan, Liechtenstein) and Filtek Bulk Fill (3M ESPE, St. Paul, MN, USA). Molds of groups III and IV were filled with Tetric N Ceram (Ivoclar Vivadent) and Filtek Z250 XTE (3M ESPE) incremental fill RC. Photo-activation was performed and specimens were incubated. Spectrophotometer analysis was done according to Commission Internationale d'Eclairage Lab color scale. After taking the baseline measurements, 10 samples from each group were immersed in distilled water (control, subgroup a), tea (subgroup b), and coffee (subgroup c) respectively, for 1, 7, and 30 days. The color values of each specimen were remeasured and color change value (E*ab) was calculated after 1, 7, and 30 days. Data were analyzed by Friedman's test and Mann–Whitney U-test; p < 0.05 is considered to be statistically significant.

Results
Group III specimens showed perceptible color changes at 30-day immersion period in coffee and tea. In group I specimens, color changes were perceptible at 7- and 30-day immersion periods in coffee and only 30-day immersion period in tea. Groups II and IV specimens showed perceptible color changes after all immersion periods in coffee and after 30 days in tea.

Conclusion
It can be concluded that Tetric N Ceram has less color change than the other nanohybrid RCs investigated when immersed in coffee and tea after various immersion periods.

How to cite this article
Thumu J, Kadiyala A, Bollu IP, Ballullaya SV, Devalla S. Effect of Staining Solutions on the Color Stability of Conventional and Bulk Fill Nanohybrid Resin Composites: A Spectrophotometric Analysis. J Oper Dent Endod 2017;2(1):1-5.
“Let's go Green to get Our Globe Clean”: Green Dentistry
Authors: Padhye Leena , Sawant Priyanka H , Vimala Nilker 
Published: May 2017

ABSTRACT
Dentistry is an extremely important and foremost healing profession. In today's world, with the increasing ecological disasters, it is highly obligatory to understand the paramount importance of being eco-friendly in every facet of our lives, including in dental practice, which has a huge impact on the environment. Eco-friendly dentistry is a term legally accepted by the Eco Dentistry Association, which is an emerging concept in dentistry. It is an approach to minimize the environmental hazards of dental practice and provide dental care in an environmentally friendly way. With the widespread introduction of beryllium into the dental industry, a large number of these workers are at risk for the development of chronic beryllium disease. Proper handling of biomedical and dental waste is indispensable for the dental profession. People have become much more cognizant of potentially harmful chemicals contained in plastic products, especially, bisphenol-A. This can be achieved by reducing waste and lowering pollution. Dental offices can use reusable towels, high-efficiency machines, and paperless records. A small change can make the overall impact of the dental office less damaging to the environment.
The purpose of this review is to discuss various ways that a dentist can choose to make the dental office “Green” and conserve precious resources with all the options available today. Eco-friendly dentistry is soon becoming the standard.

How to cite this article
Sawant PH, Vimala N, Padhye L. “Let's go Green to get Our Globe Clean”: Green Dentistry. J Oper Dent Endod 2017;2(1):19-24.
Endodontic Surgery: Is it an Obsolete Clinical Procedure?
Authors: Srinivasan Manali R , Nishanthine Cruz 
Published: May 2017

ABSTRACT
Endodontic surgery has developed the perception as an unnecessary procedure, with the emergence of implants. This opinion has been based on endodontic surgery being performed using obsolete concepts and techniques that compromised the potential for clinical success, frequently resulting in the persistence of patient symptoms, periapical pathology, and, ultimately, extraction of the treated tooth. With the emerging concepts of magnification, advanced principles of soft and hard tissue management, use of tissue regenerative root-end filling materials, and enhanced principles of wound closure, surgical endodontics has emerged as a highly predictable and comparatively painless procedure. Periapical surgery should be regarded as the method of choice when orthograde endodontic therapy cannot be performed. The present study describes indications of endodontic surgery and a few cases successfully managed using endodontic surgery.

How to cite this article
Srinivasan MR, Nishanthine C. Endodontic Surgery: Is it an Obsolete Clinical Procedure? J Oper Dent Endod 2017;2(1):40-44.
Prevalence of Musculoskeletal Disorders among Dentists in Al-Madinah, Kingdom of Saudi Arabia
Authors: Al-Gunaid Talat , Abdulhai Rayan , Flemban Baha 
Published: May 2017

Abstract
Introduction: Musculoskeletal disorders (MSDs) are one of the most common occupational hazards associated with a wide range of occupations. Dental professionals have an increased risk of developing such disorders caused by repetitive, hard, or stressful gestures. Taking this issue into consideration, we felt the necessity to investigate the prevalence and distribution of musculoskeletal symptoms among dentists in Al-Madinah.
Materials and methods: A self-reported questionnaire was distributed to a random sample of 180 dentists from different parts of Al-Madinah, Kingdom of Saudi Arabia. The questionnaire was about musculoskeletal symptoms in different parts of the body.
Results: A total of 70 questionnaires were completed and returned. Of the respondents, 47 (67.1%) were males and 23 (32.9%) were females. The mean age of respondents was 36.1 ± 8.7. Majority were general dental practitioners [45 (64.2%)], with the remainder being specialists [25 (35.8%)]. Prevalence of MSD during the past 12 months was reported to be lower back pain (65.7%), neck pain (48.6%), and shoulder pain (45.7%), with the lowest prevalence pain being found in the hips and thighs (17.1%).
Conclusion: The results suggested that the prevalence of musculoskeletal symptoms among dentists in Al-Madinah, Kingdom of Saudi Arabia, is high. Continuing education for dentists and dental students about the proper and correct dental positions as well as practicing ergonomic skills and incorporating them into the curriculum would be beneficial.
Casi Víspera / Colibrí Resucitado Crónica
Authors: Chávez-Silverman Susana 
Published: May 2017

AbstractSusana Chávez-Silverman is a Califas-born U.S. Latina writer and flaneuse who (against all odds) is also an educator, although she mostly laments what’s happened to la cacademia over the last decade or so. She still finds joy and hope in being la High Priestess of SLOW to her students and former students, some of which are among her closest compinches. Of the two crónicas included in this special curated issue of cultural works in PORTAL under the theme Transitions and Dislocations, she says: ‘My writing/life took a major detour in 2016. For most of the year, I wrote nothing at all. Or rather, nothing except e-mail after email: to administrators, colleagues all over the world, attorneys, friends and relatives. I had scheduled my sabbatical in order to finish a book project, but had been derailed by a Title IX investigation and plagiarism case at my home institution, and the accompanying anxiety and anger . I returned to my book over the summer, culling and editing hundreds of pages of primary texts (letters and emails). But this book is much longer—and truer—than anything I’ve written before and takes a different kind of writing energy, uninterrupted time, and commitment. Writing from a place of anger and anxiety doesn’t serve this book. The two crónicas included in this special curated issue are not part of my book in progress, Our Ubuntu, Montenegro: del Balboa Café al Apartheid and Back. Rather, they were my way of easing back into my (he)art space. ‘Casi Víspera’ proves I did write something in 2016 after all (other than email, I mean)—I had no memory of it until early this year! ‘Black Holes’ talks about precisely this (remembering and not). I was determined not to let 2016’s plagiarism/Title IX toxic double helix continue to poison me. I wanted to begin 2017 with a bang, and wrote this for my son, for his 30th birthday.’
Parallel Lines
Authors: Worner James G. 
Published: May 2017

James Worner is an Australian-based writer and scholar currently pursuing a PhD at the University of Technology Sydney. His research seeks to expose masculinities lost in the shadow of Australia’s Anzac hegemony while exploring new opportunities for contemporary historiography. He is the recipient of the Doctoral Scholarship in Historical Consciousness at the university’s Australian Centre of Public History and will be hosted by the University of Bologna during 2017 on a doctoral research writing scholarship. ‘Parallel Lines’ is one of a collection of stories, The Shapes of Us, exploring liminal spaces of modern life: class, gender, sexuality, race, religion and education. It looks at lives, like lines, that do not meet but which travel in proximity, simultaneously attracted and repelled. James’ short stories have been published in various journals and anthologies.
Comparison of one-step and step-wise compression tests
Authors: Skuodis Šarūnas , Karaman Ahmet Habib , Dirgėlienė Neringa 
Published: May 2017

The primary purpose of this paper is to investigate the influence of loading procedure type. To reach this aim, we have chosen the Baltic Sea Klaipėda sand, due to granulometry composition and particles shape. The paper examines several key aspects of sand compression type, namely comparison between one-step (constant rate loading) and step-wise (incremental loading) oedometer compression tests. In this manuscript, we present investigation of sandy soil compression character up to maximum 400 kPa loading. This research shows the difference between two loading procedures. The main objects of research: investigation of stress jumps during one-step and step-wise soil sample loading. The analysis of the results shows that when soil was compressed by step-wise loading procedure (0.94 mm) displacements were almost twice as big as in case of one-step loading procedure (0.57 mm).
Žemaičių Naumiesčio seniūnijos kraštovaizdžio geografinė-retrospektyvinė analizė
Authors: Bučienė Angelija , Gadal Sébastien , Galinienė Jelena , Gailius Viktoras 
Published: May 2017

Tyrimui pasirinkta dabartinė Žemaičių Naumiesčio seniūnijos užimama teritorija ir jos kraštovaizdžio komponentai, apžvelgiamas pastarųjų 25–30 metų laikotarpis. Nagrinėjami santykinai natūralūs ir agrariniai-urbanistiniai kraštovaizdžio komponentai, taip pat socialiniai-demografiniai kraštovaizdžio pokyčius lemiantys veiksniai bei jų kaita bėgant laikui ir erdvėje siekiant išskirti bendriausias kaitos tendencijas. Darbe naudoti statistinės, istorinių dokumentų analizės, nuotoliniai ir GIS modeliavimo metodai. Tyrimas atskleidė, kad antroje sovietmečio pusėje tiriamoje teritorijoje vyravo agrarinis mažai urbanizuotas kraštovaizdis. XXI a. pradžioje agrarinių ir urbanizuotų (užstatytų) teritorijų sumažėjo, santykinai natūralių žemėveikslių (vandenų) plotas liko nepakitęs arba šiek tiek padidėjo (miškų), tačiau sumažėjo kaimo gyventojų skaičius, o trims kaimams gresia išnykimas.
Photoperiodic regime influences onset of lens opacities in a non-human primate
Authors: Dubicanac Marko , Strueve Julia , Mestre-Frances Nadine , Verdier Jean-Michel , Zimmermann Elke , Joly Marine 
Published: May 2017

BackgroundOpacities of the lens are typical age-related phenomena which have a high influence on photoreception and consequently circadian rhythm. In mouse lemurs, a small bodied non-human primate, a high incidence (more than 50% when >seven years) of cataracts has been previously described during aging. Previous studies showed that photoperiodically induced accelerated annual rhythms alter some of mouse lemurs’ life history traits. Whether a modification of photoperiod also affects the onset of age dependent lens opacities has not been investigated so far. The aim of this study was therefore to characterise the type of opacity and the mouse lemurs’ age at its onset in two colonies with different photoperiodic regimen.MethodsTwo of the largest mouse lemur colonies in Europe were investigated: Colony 1 having a natural annual photoperiodic regime and Colony 2 with an induced accelerated annual cycle. A slit-lamp was used to determine opacities in the lens. Furthermore, a subset of all animals which showed no opacities in the lens nucleus in the first examination but developed first changes in the following examination were further examined to estimate the age at onset of opacities. In total, 387 animals were examined and 57 represented the subset for age at onset estimation.ResultsThe first and most commonly observable opacity in the lens was nuclear sclerosis. Mouse lemurs from Colony 1 showed a delayed onset of nuclear sclerosis compared to mouse lemurs from Colony 2 (4.35 ± 1.50 yearsvs.2.75 ± 0.99 years). For colony 1, the chronological age was equivalent to the number of seasonal cycles experienced by the mouse lemurs. For colony 2, in which seasonal cycles were accelerated by a factor of 1.5, mouse lemurs had experienced 4.13 ± 1.50 seasonal cycles in 2.75 ± 0.99 chronological years.DiscussionOur study showed clear differences in age at the onset of nuclear sclerosis formation between lemurs kept under different photoperiodic regimes. Instead of measuring the chronological age, the number of seasonal cycles (N = four) experienced by a mouse lemur can be used to estimate the risk of beginning nuclear sclerosis formation. Ophthalmological examinations should be taken into account when animals older than 5–6 seasonal cycles are used for experiments in which unrestricted visual ability has to be ensured. This study is the first to assess and demonstrate the influence of annual photoperiod regime on the incidence of lens opacities in a non-human primate.
Area-Level Social Deprivation and Cytomegalovirus Seropositivity at the Time of Solid Organ Transplant
Authors: Abidi Maheen Z. , Lopez Rocio , Arrigain Susana , Weinberg Adriana , Kaplan Bruce , McAdams-DeMarco Mara , Schold Jesse D. , Erlandson Kristine M. 
Published: October 2024

ImportanceCytomegalovirus (CMV) is associated with significant morbidity and mortality in solid organ transplant (SOT) recipients. The risk factors for CMV seropositivity in SOT recipients, including area-level social deprivation in the US, have not been fully characterized.ObjectiveTo (1) evaluate CMV seroprevalence, (2) assess the recipient characteristics associated with CMV seropositivity, and (3) assess the association of area-level social deprivation index (SDI) scores with pretransplant CMV serostatus.Design, Setting, and ParticipantsThis retrospective cross-sectional analysis of the Scientific Registry of Transplant Recipients database included all adult (aged ≥18 years) SOT recipients from January 1, 2008, to May 31, 2022. Data were analyzed from April 10 to October 25, 2023.ExposureRecipient characteristics and area-level SDI.Main Outcomes and MeasuresMultivariable generalized linear models were used to evaluate the association between (1) patient characteristics and CMV and (2) social deprivation (measured by SDI scores, which were assessed in quintiles, from lowest to highest) and CMV seropositivity. In addition, differences based on patient demographics and the transplanted organ(s) were evaluated.ResultsAmong the 389 288 SOT recipients included in the analysis, mean (SD) age was 53.3 (13.0) years; 63.0% were male, 21.4% were Black, 15.2% were Hispanic White, 56.2% were non-Hispanic White, and 62.7% were CMV seropositive. The mean (SD) age was higher among CMV seropositive (54.0 [12.7] years) compared with CMV seronegative (52.0 [13.5] years) patients. Seropositivity for CMV was higher among women (69.9%) than men (58.5%) and among Black (74.8%) and Hispanic White (80.2%) patients compared with non-Hispanic White patients (50.4%). Seropositivity for CMV was highest among kidney (64.5%), liver (63.6%), and kidney and liver (66.2%) recipients. Greater SDI scores were associated with greater CMV seropositivity, ranging from 51.7% for the least deprived to 75.5% for the most deprived quintiles (P &amp;lt; .001), independent of age, sex, or race.Conclusions and RelevanceIn this cross-sectional study, an association between SDI and CMV seropositivity was observed among SOT recipients, independent of age, sex, or race and ethnicity. To optimize posttransplant outcomes in CMV seropositive recipients, efforts targeting prevention of CMV reactivation need to be prioritized in these higher-risk populations.
Multiplexed Random Access Approach to DNA Microspheres for High‐Capacity Data Storage
Authors: Zhong Wukun , Wang Saijie , Geng Chunyang , Zheng Yanlin , Bai Shiyan , Cao Xiuping , Liu Kai , Yang Yang , Lu Chunhua , Jiang Xingyu 
Published: October 2024

AbstractWith the rapid growth of modern information data, DNA has emerged as a novel medium for data storage due to its durability, replicability, sustainability, and high density. This study focuses on the compatibility, high capacity, and random access of DNA data storage systems. A calcium phosphate (CaP) mineralized fluorescent SiO2 DNA (FSD@CaP) microspheres is developed by encapsulating fluorescence‐labeled encoding DNA files onto the surface of the SiO2 microspheres that are intrinsically sized and fluorescent as addressed two‐dimensional (2D) barcodes. The various sizes of SiO2 and various fluorescence‐labeled encoding DNA files forming 2D barcodes of FSD@CaP. The 2D barcodes enhance the system's compatibility while allowing multiplexed random access to DNA files. The high‐capacity DNA storage permits effective single access to the DNA file using a minimal number of FSD@CaP microspheres, without impacting the matrix of the system. Ultimately, random access to arbitrary DNA files within a complex pool of distinct 2D barcode‐tagged FSD@CaP microspheres is demonstrated by utilizing a flow cytometer for multiplexed sorting. Consequently, the strategy of this storage system provides a scalable concept for compatibility and multiplexed random access to DNA data sets.
Electron Migratory Polarization of Interfacial Electric Fields Facilitates Efficient Microwave Absorption
Authors: Duan Lvtong , Zhou Jintang , Yan Yi , Tao Jiaqi , Liu Yijie , Lei Yiming , Zou Kexin , Wang Yucheng , Huang Hexia , Tao Xuewei , Liu Peijiang , Ma Yao , Yao Zhengjun 
Published: October 2024

AbstractHigh‐performance microwave absorption materials (MAM) are often accompanied by synergistic effects of multiple loss mechanisms, but the contribution share of various loss mechanisms has been neglected to provide a template and reference for the design of MAM. Here, a highly conductive 2D structure is designed through a functional group‐induced structure modulation strategy, composite L‐Ni@C can reach an effective absorption bandwidth of 6.45 GHz at 15% fill rate, with a maximum absorption efficiency of 99.9999%. Through the layer‐by‐layer analysis of the loss mechanism, it is found that the strong loss originates from the polarization loss at the heterogeneous interface. The movement of space charge between the two‐phase interface forms an interfacial electric field, and the in situ doping of nitrogen is cleverly achieved by the introduction of amino functional groups, which significantly enhances the rate of space charge transfer between the two‐phase interface and greatly facilitates the electron migration polarization. The space charge motion law of the interfacial electric field is also simulated using COMSOL simulation software to illustrate the electron migration polarization mechanism at heterogeneous interfaces. This work fills the gap of functional group‐induced structural modulation and presents new theories into the mechanism of space charge movement at heterogeneous interfaces.
Extremely Fast Wicking Self‐Layered Interpenetrating Network Hydrogel for Rapid All Day Collection of Atmospheric Water
Authors: He Yuxuan , Zhang Yihang , Xiang Bocheng , Fu Changhui , Zhang Huayang , Zhan Danyan , Guo Zhiguang 
Published: October 2024

AbstractHygroscopic salt hydrogel photothermal composites and related technology are a promising pathway for water harvesting. However, due to the overly cumbersome preparation process, the distribution of the surface photothermal layer is difficult to control and the photothermal efficiency is low. In this paper, a method is proposed to greatly simplify the preparation process of photothermal layer hydrogels and improve their atmospheric water harvesting performance by constructing temperature‐sensitive interpenetrating networks. Due to the decomposition of some reversible hydrated structures in the network during heating and warming, carbon nanotubes move autonomously to form a layered structure with a photothermal effect on the upper surface, which can return to its original state after cooling and remain stable at room temperature or under solar illumination. Compared with hydrogels with general layered structure or overall distribution of photothermal materials, agar/GG/PAM/CNT hydrogel has faster moisture adsorption efficiency and higher desorption efficiency, and during the 24 h continuous sorption–desorption cycle is capable of achieving high water yield of 2.57 Lwater kgsorbents−1 day−1, superior to most recent hydrogel adsorbents. Simplifying the preparation process while maintaining high efficiency, while greatly improving photothermal performance, paves the way for cost‐effective mass production applications for a wide range of hygroscopic salt‐hydrogel photothermal composites.
Immunomodulatory Biomaterials: Tailoring Surface Properties to Mitigate Foreign Body Reaction and Enhance Tissue Regeneration
Authors: Amani Hamed , Alipour Mahdieh , Shahriari Elahe , Taboas Juan M 
Published: October 2024

AbstractThe immune cells have demonstrated the ability to promote tissue repair by removing debris, breaking down the extracellular matrix, and regulating cytokine secretion profile. If the behavior of immune cells is not well directed, chronic inflammation and foreign body reaction (FBR) will lead to scar formation and loss of biomaterial functionality. The immunologic response toward tissue repair or chronic inflammation after injury and implantation can be modulated by manipulating the surface properties of biomaterials. Tailoring surface properties of biomaterials enables the regulation of immune cell fate such as adhesion, proliferation, recruitment, polarization, and cytokine secretion profile. This review begins with an overview of the role of immune cells in tissue healing and their interactions with biomaterials. It then discusses how the surface properties of biomaterials influence immune cell behavior. The core focus is reviewing surface modification methods to create innovative materials that reduce foreign body reactions and enhance tissue repair and regeneration by modulating immune cell activities. The review concludes with insights into future advancements in surface modification techniques and the associated challenges.