检索结果-南通市图书馆

Antimicrobial properties of dental cements modified with zein-coated magnesium oxide nanoparticles

Bioactive Materials 2022年第2期7卷 49-56页

作者： Ghada H.Naguib Hani M.Nassar Mohamed T.Hamed department of Restorative Dentistry Faculty of DentistryKing Abdulaziz UniversityJeddahSaudi Arabia department of Oral Biology Faculty of DentistryCairo UniversityCairoEgypt department of Oral and Maxillofacial prosthodontics King Abdulaziz UniversityFaculty of DentistryJeddahSaudi Arabia department of Fixed prosthodontics Faculty of DentistryCairo UniversityCairoEgypt

The aim of this study was to test the antimicrobial properties of dental cements modified with magnesium oxide(MgO)***-modified MgO nanoparticles(zMgO)in concentrations(0.0,0.3,0.5,and 1.0%)were mixed with dental cements(Fuji II,Rely X Temp E,Ionoglass Cem,Es Temp NE,and System P link).Eight discs were fabricated from each zMgO-cement pair for a total of 32 specimens for each *** of the dental cements incorporating zMgO was done by X-ray Diffraction(XRD)and Field Emission Scanning Electron Microscopy(FESEM).The antimicrobial properties of the mixtures were tested using direct contact and agar diffusion assays against Streptococcus mutans,Staphylococcus aureus,Enterococcus faecalis,and Candida *** was analyzed using two-way analysis of variance and LSD post hoc test at 0.05 significance *** spectra showed sharp peaks of zMgO indicating its high crystalline nature,while the amorphous dental cements with zMgO had broad *** analysis showed a uniform distribution of the zMgO nanoparticles in the *** were significant inhibition zone values associated with all concentrations of zMgO-cement mixtures tested compared to controls(p<0.001)with a dose-response recorded only with Fuji *** density values were significantly lower in zMgO groups compared to controls for all *** effect was most prominent with Rely X against *** and *** cements containing zMgO showed significant antimicrobial properties that were dependent on the specific initial cement substrate.

关键词： Magnesium oxide nanoparticles Antimicrobial biomaterials Dental cement Nanocoatings

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

New paradigms in regenerative engineering:Emerging role of extracellular vesicles paired with instructive biomaterials

引用

BIOCELL 2022年第6期46卷 1445-1451页

作者： W.BENTON SWANSON YUJI MISHINA department of Biologic and Materials Science&prosthodontics School of DentistryUniversity of MichiganAnn ArborMI48109USA

Mesenchymal stem cells(MSCs)have long been regarded as critical components of regenerative medicine strategies,given their multipotency and persistence in a variety of ***,the specific role of MSCs in mediating regenerative outcomes has been attributed(in part)to secreted factors from transplanted cells,namely extracellular *** viewpoint manuscript highlights the promise of cell-derived extracellular vesicles as agents of regeneration,enhanced by synergy with appropriate biomaterials *** vesicles are a potentially interesting regenerative tool to enhance the synergy between MSCs and *** a result,we believe these technologies will improve patient outcomes through efficient therapeutic strategies resulting in predictable patient outcomes.

关键词： Biomaterials Extracellular vesicles Mesenchymal stem cells Regenerative medicine Tissue engineering

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Non-Thermal Atmospheric Plasma:Can it Be Taken as a Common Solution for the Surface Treatment of Dental Materials?

引用

Plasma Science and Technology 2016年第4期18卷 417-423页

作者： Emre SEKER Mehmet Ali KILICARSLAN Serdar POLAT Emre OZKIR Suat PAT department of prosthodontics Faculty of DentistryEskisehir Osmangazi University department of prosthodontics Faculty of DentistryAnkara University department of prosthodontics Faculty of DentistryGazi University department of prosthodontics Faculty of DentistryAfyon Kocatepe University Faculty of Art and Science Eskisehir Osmangazi University

This study aimed to evaluate the surface roughness and wetting properties of various dental prosthetic materials after different durations of non-thermal atmospheric plasma（NTAP）*** hundred and sixty discs of titanium（Ti）（n：40）,cobalt chromium（Co-Cr）（n：40）,yttrium stabilized tetragonal zirconia polycrystals（Y-TZP）（n：40）and polymethylmethacrylate（PMMA）（n：40）materials were machined and smoothed with silicon carbide *** surface roughness was evaluated in a control group and in groups with different plasma exposure times [1-3-5 s].The average surface roughness（Ra）and contact angle（CA）measurements were recorded via an atomic force microscope（AFM）and tensiometer,*** changes were examined with a scanning electron microscope（SEM）.Data were analyzed with two-way analysis of variance（ANOVA）and the Tukey HSD test α=0.05）.According to the results,the NTAP surface treatment significantly affected the roughness and wettability properties（P 〈 0.05）.SEM images reveal that more grooves were present in the NTAP *** an increase in the NTAP application time,an apparent increment was observed for Ra,except in the PMMA group,and a remarkable reduction in CA was observed in all *** is concluded that the NTAP technology could enhance the roughening and wetting performance of various dental materials.

关键词： dental material atmospheric plasma surface treatment roughness contact angle

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effects of short-term adaptation to new complete dentures on perception thresholds for interocclusal thickness in experienced and non-experienced denture wearers

引用

Chinese Medical Journal 2004年第5期117卷 738-741页

作者： A.Dilek Nalbant department of prosthodontics

Background The ability of patients to discriminate thickness can change with time after the insertion of new complete dentures, and this adaptation may differ according to the experiences of the patients If so, an education program to reinforce the oral functions may be needed This study was to evaluate patients' ability to discriminate thickness by comparing experienced and non-experienced denture wearers after the insertion of new complete dentures Methods Forty edentulous patients with a skeletal Class Ⅰ jaw relationship without any temporomandibular disturbances were in the study After insertion of new complete dentures, all patients were tested for discrimination threshold for interocclusal thickness The thickness perception test was repeated on days 1, 7, and 30 after the insertion of new dentures The discriminatory ability was assessed with steel and aluminium foils placed between the upper and lower central incisor teeth The records included the duration of wearing dentures The data were subjected to statistical analysis of two-way ANOVA, multiple comparison test and Student's t test Results Discrimination of tactile ability significantly increased over 30 days in experienced denture wearers as compared with non-experienced patients ( P <0 001) The difference in thickness perception threshold was statistically significant between the two groups ( P <0 001) Conclusion Adaptation and denture experience can affect thickness discrimination of complete denture wearers

关键词： complete denture wearer tactile sensibility thickness perception

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reflections on the importance of built heritage inventory as a tool for preservation in Karachi-a case study of Wadhumal Odharam(Jail)Quarter in Karachi,Sindh,Pakistan

引用

Built Heritage 2024年第1期8卷 29-45页

作者： Tania Ali Soomro department of Architecture and Urban Studies Politecnico Di MilanoMilanoItaly

The cultural heritage inventory is an alternate tool to document historic buildings to establish a protected enlistment *** the importance of inventories for developing knowledge of historical and cultural patterns,multiple attempts are being made to record Karachi's historic buildings in the form of inventory *** research investigates the various approaches used for inventorying Karachi's cultural heritage and their potential impact on the survival of the city's historical *** literature,this research provides a brief overview of Karachi's architectural development before and after its annexation to the British Raj(Term used by scholars to represent the British crown in *** term'The Raj'is also sometimes used.)(1843-1947),which is now considered the historic core of the city of Karachi,together with the systems of inventorying the built heritage over *** Odharam(Jail)Quarter is shortlisted as a case study for this research,which will be examined from the perspective of inventory making in relation to its specific physical and sociocultural context as documented through the inventorying *** Quarter is also referred to as'Jail Quarter'because of the presence of the Jail building within the Quarter precinct,which was demolished during the British era;it is discussed in further detail later in this *** research approach follows a survey of the quarter conducted between August and September 2022,followed by a mapping of the historic *** inventory mapping of the Quarter is performed by using an available database(Database of various historic Quarters of Karachi by Heritage Cell-DAPNED).The data for inventory also helps provide an understanding of the history and development of the *** other aspects of the research methodology include intreating questions and collecting data about various aspects of the Quarter,such as the building information,photographic documentation of the properties,an

关键词： inventorying inventory making heritage conservation commercialisation pressure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Antibacterial activity and mechanism of newly developed Zr-30Ta and Zr-25Ta-5Ti alloys against implant-associated infection

引用

Rare Metals 2022年第12期41卷 4176-4187页

作者： Hai-Lin Yang Akram Nasser Juaim Ling Zou Meng-Zhen Zhu Xiao-Na Chen Chen-Xu Ma Xiong-Wen Zhou State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangsha 410008China department of prosthodontics Center of StomatologyXiangya HospitalCentral South UniversityChangsha 410008China department of prosthodontics Faculty of DentistryThamar UniversityDharmarYemen department of Oral Implantology Xiangya Stomatological Hospital and School of StomatologyCentral South UniversityChangsha 410008China

Infection is a common problem after implantation,and the currently used Ti-based implants have insufficient antibacterial *** newly developed Zr-30Ta and Zr-25Ta-5Ti alloys exhibited good mechanical properties,low elastic moduli,and high corrosion *** this work,their antibacterial activities and antibacterial mechanisms were *** surface roughness,wettability,and charge of the alloys were evaluated using a profilometer,drop shape analyzer,and electrokinetic analyzer,*** antibacterial activity against Streptococcus mutans and Porphyromonas gingivalis was investigated using the inhibition zone assay,plate count assay,live/dead staining,and scanning electron microscopy(SEM).The reactive oxygen species release(ROS)was evaluated using the 2’7’-dichlorodihydrofluorescein diacetate(DCFH-DA)*** results demonstrated that Zr-30Ta and Zr-25Ta-5Ti alloys had favorable smooth,hydrophilic,negatively charged surfaces that decreased bacteria adhesion and prevented biofilm ***-30Ta and Zr-25Ta-5Ti alloys also exhibited a time-dependent decrease in the bacteria adhesion and ***-30Ta and Zr-25Ta-5Ti alloys were also found to induce direct membrane damage and increase ROS production,resulting in significantly better antibacterial activities than ***-30Ta and Zr-25Ta-5Ti alloys exhibited comparable antibacterial *** work suggests that the newly developed Zr-30Ta and Zr-25Ta-5Ti alloys have good antibacterial activity against Streptococcus mutans and Porphyromonas gingivalis and are promising candidate materials for dental and orthopedic implants.

关键词： Zirconium-tantalum Dental implant Antibacterial Peri-implant infection Biofilm

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Recent advances in 3D printed electrode materials for electrochemical energy storage devices

引用

Journal of Energy Chemistry 2023年第6期81卷 272-312,I0008页

作者： Suhail Mubarak Duraisami Dhamodharan Hun-Soo Byun department of Chemical and Biomolecular Engineering Chonnam National UniversityYeosuJeonnam 59626Republic of Korea Greenlab Department of prosthodonticsSaveetha Dental College and HospitalsSaveetha Institute of Medical and Technical SciencesChennaiTamil Nadu 600077India

Electrochemical energy storage(EES)systems like batteries and supercapacitors are becoming the key power sources for attempts to change the energy dependency from inadequate fossil fuels to sustainable and renewable *** energy storage devices(EESDs)operate efficiently as a result of the construction and assemblage of electrodes and electrolytes with appropriate structures and effective *** manufacturing procedures have restrictions on regulating the morphology and architecture of the electrodes,which would influence the performance of the devices.3D printing(3DP)is an advanced manufacturing technology combining computer-aided design and has been recognised as an artistic method of fabricating different fragments of energy storage devices with its ability to precisely control the geometry,porosity,and morphology with improved specific energy and power *** capacity to create mathematically challenging shape or configuration designs and high-aspect-ratio 3D architectures makes 3D printing technology unique in its ***,the control settings,interactive manufacturing processes,and protracted post-treatments will affect the reproducibility of the printed *** intelligent software,sophisticated control systems,high-grade industrial equipment,and post-treatment-free methods are necessary to develop.3D printed(3DPd)EESDs necessitate dynamic printable materials and composites that are influenced by performance criteria and fundamental ***,we review the recent advances in 3DPd electrodes for EES *** emphasis is on printable material synthesis,3DP techniques,and the electrochemical performance of printed *** the fabrication of electrodes,we concentrate on major 3DP technologies such as direct ink writing(DIW),inkjet printing(IJP),fused deposition modelling(FDM),and stereolithography3DP(SLA).The benefits and drawbacks of each 3DP technology are extensively di

关键词： 3D printing 3D printed electrodes Electrochemical energy storage Lithium-ion battery Zinc-ion battery Supercapacitor

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MOFs and bone: Application of MOFs in bone tissue engineering and bone diseases

引用

Chinese Chemical Letters 2023年第7期34卷 23-37页

作者： Xiang Li Xingyue Shu Yixin Shi Haolin Li Xibo Pei department of prosthodontics State Key Laboratory of Oral DiseasesNational Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuanUniversityChengdu610041China

Metal-organic frameworks(MOFs), a class of hybrid materials, consist of organic linkers and bridging metal ions or clusters. Their tunable pore sizes, large surface area, good biocompatibility, structural variability in combination with materials and chemicals, and osteogenic effects provide potential approaches for bone tissue engineering and bone diseases. And there are more and more research on MOFs in the field of osteogenesis in recent years. This review presents an overall summary of the application in the bone tissue engineering and bone diseases of MOFs and their composites, starting with the synthesis of MOFs, which discusses the advantages and disadvantages of different syntheses. Then, the biological functions of MOFs are discussed, which are the basics of MOFs applied in the organism. Importantly,mechanisms and abundant applications of MOFs are detailed in the bone tissue engineering and bone diseases. Finally, some prospects of MOFs are discussed, for instance, exploring whether MOFs can be used to treat other bone diseases.

关键词： Metal-organic frameworks(MOFs) Osteogenesis Drug delivery Bone tissue engineering Bone disease

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Topographical biointerface regulating cellular functions for bone tissue engineering

引用

Biosurface and Biotribology 2022年第3期8卷 165-187页

作者： Mingyu Zhu Rui Zhang Zhixiang Mao Ju Fang Fuzeng Ren department of Materials Science and Engineering Southern University of Science and TechnologyShenzhenGuangdongChina department of prosthodontics Stomatology CenterPeking University Shenzhen HospitalShenzhenGuangdongChina

The physiochemical properties of the implant interface significantly influence cell growth,differentiation,cellular matrix deposition,and mineralisation,and eventually,determine the bone regeneration *** directly sense and respond to the physical,chemical,and mechanical cues of the implant surface,and it is increasingly recognized that surface topography can evoke specific cellular responses,conferring biological functions on substrate materials and regulating tissue *** progress towards the fundamental understanding of the interplay between the cell and topographical surface has been made by combined advance in fabrication technologies and cell ***,the precise fabrication and control of nano/microscale topographies can provide the fundamental knowledge of the mechanotransduction process that governs the cellular response as well as the knowledge of how the specific features drive cells towards a defined differentiation *** this review,we first introduce common techniques and substrate materials for designing and fabricating micro/nanotopographical surfaces for bone *** then illustrate the intrinsic relationship of topological cues,cellular signal transduction,and cell functions and fates in osteogenic ***,we discuss the challenges and the future of using topological cues as a cell therapy to direct bone tissue regeneration.

关键词： interface eventually surface

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Interfacial engineering through lead binding using crown ethers in perovskite solar cells

引用

Journal of Energy Chemistry 2024年第5期92卷 263-270页

作者： Sun-Ju Kim YeonJu Kim Ramesh Kumar Chitumalla Gayoung Ham Thanh-Danh Nguyen Joonkyung Jang Hyojung Cha Jovana Milić Jun-Ho Yum Kevin Sivula Ji-Youn Seo department of Nano Fusion Technology Pusan National UniversityBusan 46241Republic of Korea Laboratory for Molecular Engineering of Optoelectronic Nanomaterials Institute of Chemical Sciences and EngineeringÉcole Polytechnique Fédérale de Lausanne(EPFL)1015 LausanneSwitzerland department of Energy Convergence and Climate Change Kyungpook National UniversityDaegu 41566Republic of Korea department of Hydrogen and Renewable Energy Kyungpook National UniversityDaegu 41566Republic of Korea Adolphe Merkle Institute University of FribourgCH-1700 FribourgSwitzerland

In the domain of perovskite solar cells(PSCs),the imperative to reconcile impressive photovoltaic performance with lead-related issue and environmental stability has driven innovative *** study pioneers an approach that not only rectifies lead leakage but also places paramount importance on the attainment of rigorous interfacial *** ethers,notably benzo-18-crown-6-ether(B18C6),were strategically integrated at the perovskite-hole transport material *** ethers exhibit a dual role:efficiently sequestering and immobilizing Pb^(2+)ions through host-guest complexation and simultaneously establishing a robust interfacial passivation *** crown ether candidates,guided by density functional theory(DFT)calculations,demonstrated proficiency in binding Pb2+ions and optimizing interfacial *** devices incorporating these materials achieved exceptional power conversion efficiency(PCE),notably 21.7%for B18C6,underscoring their efficacy in lead binding and interfacial *** techniques,including time-of-flight secondary ion mass spectrometry(ToF-SIMS),ultraviolet photoelectron spectroscopy(UPS),time-resolved photoluminescence(TRPL),and transient absorption spectroscopy(TAS),unequivocally affirmed Pb^(2+)ion capture and suppression of non-radiative ***,these PSCs maintained efficiency even after enduring 300 h of exposure to 85%relative *** research underscores the transformative potential of crown ethers,simultaneously addressing lead binding and stringent interfacial passivation for sustainable PSCs poised to commercialize and advance renewable energy applications.

关键词： Perovskite solar cells Interfacial passivation crown ether materials Stability

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：