检索结果-南通市图书馆

Influence of surface roughness on the color of dental-resin composites

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第7期12卷 552-562页

作者： Razvan GHINEA Laura UGARTE-ALVAN Ana YEBRA Oscar E.PECHO Rade D.PARAVINA Maria del Mar PEREZ Department of Optics Faculty of ScienceUniversity of Granada Department of Stomatology Faculty of OdontologyUniversity of Granada Houston Center for Biomaterials and Biomimetics & Department of Restorative Dentistry and Biomaterials University of Texas Dental Branch at Houston

This study deals with the influence of surface roughness on the color of resin *** resin composites (microfilled,hybrid,and microhybrid) were each polished with 500-grit,1 200-grit,2 000-grit,and 4 000-grit SiC *** roughness parameter (Ra) was measured using a Plμ confocal microscope,and field-emission scanning electron microscope (Fe-SEM) images were used to investigate filler *** was measured using a spectroradiometer and a D65 standard illuminant (geometry diffuse/0° specular component excluded (SCE) mode).Surface roughness decreased with grit number and was not influenced by filler size or size distribution.A significant influence of Ra on lightness (L*) was *** increased with decreases in roughness,except for specimens that underwent polishing procedure 4 (PP4;500-grit,1 200-grit,2 000-grit,and 4 000-grit SiC papers consecutively).Generally,it was found that surface roughness influenced the color of resin *** composites that underwent PP1 (500-grit SiC paper) exhibited significant differences in chroma (C*),hue (h°),and lightness (L*) compared to composites that underwent PP3 (500-grit,1 200-grit,and 2 000-grit SiC papers consecutively) and *** difference (E*) between the polishing procedures was within acceptability thresholds in dentistry.

关键词： Color measurement dental resin composites Roughness

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

A General Strategy for Efficiently Constructing Multifunctional Cluster Fillers Using a Three-Fluid Nozzle Spray Drying Technique for dental Restoration

引用

Engineering 2022年第1期8卷 138-147页

作者： Dan-Lei Yang Dan Wang Hao Niu Rui-Li Wang Mei Liu Fei-Min Zhang Jie-Xin Wang Mei-Fang Zhu State Key Laboratory of Organic–Inorganic composites Beijing University of Chemical TechnologyBeijing 100029China Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Jiangsu Key Laboratory of Oral Diseases Department of ProsthodonticsAffiliated Hospital of StomatologyNanjing Medical UniversityNanjing 210029China

Multifunctional fillers are greatly required for dental resin composites(DRCs).In this work,a spray dryer with a three-fluid nozzle was applied for the first time to construct high-performance complex nanoparticle clusters(CNCs)consisting of different functional nanofillers for dental *** application of a three-fluid nozzle can effectively avoid the aggregation of different nanoparticles with opposite zeta potentials before the spray drying process in order to construct regularly shaped *** a SiO_(2)–ZrO_(2) binary system,the SiO_(2)–ZrO_(2) CNCs constructed using a three-fluid nozzle maintained their excellent mechanical properties((133.3±4.7)MPa,(8.8±0.5)GPa,(371.1±13.3)MPa,and(64.5±0.7)HV for flexural strength,flexural modulus,compressive strength,and hardness of DRCs,respectively),despite the introduction of ZrO_(2) nanoparticles,whereas their counterparts constructed using a two-fluid nozzle showed significantly decreased mechanical ***,heat treatment of the SiO_(2)-ZrO_(2) CNCs significantly improved the mechanical properties and radiopacity of the *** DRCs containing over 10%mass fraction ZrO_(2) nanoparticles can meet the requirement for radiopaque *** importantly,this method can be expanded to ternary or quaternary *** filled with SiO_(2)-ZrO_(2)-ZnO CNCs with a ratio of 56:10:4 displayed high antibacterial activity(antibacterial ratio>99%)in addition to excellent mechanical properties and ***,the three-fluid nozzle spray drying technique holds great potential for the efficient construction of multifunctional cluster fillers for DRCs.

关键词： Multifunctional cluster fillers Three-fluid nozzle spray drying Mechanical properties Antibacterial activity Radiopacity dental resin composites

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

Mechanical Properties, Biocompatibility and Anti-Bacterial Adhesion Property Evaluation of Silicone-Containing resin Composite with Different Formulae

引用

Journal of Renewable Materials 2022年第12期10卷 3201-3215页

作者： Muzi Liao Hui Tong Xiangya Huang Fang Liu Jingwei He Sui Mai Hospital of Stomatology Guanghua School of StomatologySun Yat-sen UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Stomatology GuangzhouChina College of Materials Science and Engineering South China University of TechnologyGuangzhouChina

Novel branched silicone methacrylate was *** mechanical and biological properties of the resin system were investigated to select the formula proportion with the best overall *** novel silicone-containing monomers were combined with an incremental sequence of glass filler concentrations in commonly used Bis-GMA/TEGDMA(50/50,wt./wt.)dental resin *** properties,surface properties,antibacterial adhesion effect,anti-biofilm effect,protein adsorption,and cytotoxicity were *** results showed that BSMs did not affect the double bond conversion of dental resin,but could reduce volumetric shrinkage(presins can resist protein and bacteria adhesion(***)because it has increased hydrophobicity and a lower free energy surface(presin methacrylate can reduce the polymerization shrinkage,have low surface energy and anti-adhesion *** composite resin containing 70%matrix has the best comprehensive *** silicone methacrylate composite represents an innovative method to improve the properties and reducing secondary caries.

关键词： dental resin composites silicone hydrophobicity anti-biofilm physicochemical property

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

Synthesis of dental resins using diatomite and nano-sized SiO2 and TiO2

引用

Progress in Natural Science:Materials International 2012年第2期22卷 94-99页

作者： Xiaoli Miao a,Meifang Zhu a,Yaogang Li b,Qinghong Zhang b,Hongzhi Wang a a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620,China b Engineering Research Center of Advanced Glasses Manufacturing Technology,MOE,Donghua University,Shanghai 201620,China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua University Shanghai 201620 China Engineering Research Center of Advanced Glasses Manufacturing Technology MOE Donghua University Shanghai 201620 China

The mechanical properties of dental composites were improved by porous diatomite and nano-sized silica(OX-50)used as *** resin composites,filled with silanized OX-50 and silanized diatomite(40:60 wt/wt),presented the best flexural strength(133.1 MPa),elastic modulus(9.5 GPa)and Vickers microhardness(104.0 HV).Besides these,TiO2 nanoparticles were introduced to tune the dental resin composites colours which were valued by the CIE-Lab *** colour parameters(L*,a*,b*)showed that the colour changes of resin composites could be perceived obviously,when 300-400 nm TiO2 particles were introduced as *** resin composite,filled with 0.5 wt%TiO2,exhibited both clear discolouration(DE * =3.22)and high mechanical *** scanning electron microscope(SEM)equipped with an energy dispersive X-ray(EDX),the titanium elemental mapping results indicated that the TiO2 particles were distributed evenly in the prepared dental composites.

关键词： dental resin composites TiO2 Diatomite Colour change Optical properties

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

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

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

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：