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Chinese Journal of Polymer Science 2015年第8期33卷 1125-1132页

作者： Qi Wu Wei Huang Hai-jiang Wang Li-li Pan Chao-liang Zhang 刘习奎 college of Polymer Science and Engineering Sichuan University West China Hospital of stomatology Sichuan University

A series of microporous polyimide networks with porphyrin units （Pr-MPIs） were facilely synthesized through a one-step solution polymerization process. Of particular interest is that Pr-MPI-1 containing distorted spirobisindane unit revealed the highest BET surface area （953 m^2/g）, total pore volume （0.75 cma/g）, and extreme hysteresis between the N2 adsorption and desorption isotherm. Further study revealed the prepared Pr-MPI-1 exhibited a synergistic structural effect on exceptional uptake of volatile organic compounds （VOCs） due to the high porosity and highly distorted spirobisindane structure enabled large interface and the swellability. This new approach would open up a facile approach toward the preparation of highly swellable high performance polymeric microporous materials, which are deeply wanted for environment-related applications such as VOCs adsorption and oil/water separation.

关键词： Microporous polyimides Spirobisindane Swellability Adsorption.

Properties of a New Dental Photocurable Resin based on the Expanding Monomer and Threecomponent Photoinitiator System

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Journal of Wuhan University of Technology(Materials Science) 2014年第2期29卷 384-390页

作者：付静 LIU Wenjia LIU Xiaoqing Sapna laxmi tuladhar WAN Qianbing 王航 State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Department of Prosthodontics West China College of Stomatology Sichuan University

The purpose of this study was to use. a three-component photoinitiation system comprising 1wt% CQ （camphorquinone）, 2wt% DMAEMA （2-（dimethylamino） ethyl meth acrylate） and 2wt% ph^2I^＋PF6^- （diphenyliodonium hexafluorophosphate） to initiate the copolymerization of the matrix resins which combine bisphenol-S-bis （3-methacrylate-2-hydroxy propyl） ether （BisS-GMA） with the expanding monomer unsaturated spiro orthoesters 2-methylene-l,4,6-tdspiro[4,4] nonane （MTOSN）, for minimizing the volumetric shrinkage that generally occurs during polymerization. It was hypothesized that MTOSN would expand volumetrically during polymerization under the three-component photoinitiator system and further reductions in volumetric shrinkage would be obtained. The performance study which consists of degree of conversion and condition of the ring-opening reactions of MTOSN, volumetric shrinkage and mechanical properties including tensile bond strength, compressive strength and Vicker＇s hardness were carried out respectively by Fourier transfer infrared, the dilatometer and the universal testing machine. The results supported that the dental composites based on the expanding monomer and three-component photoinitiator system engendered a greater decrease of volumetric shrinkage and better mechanieal properties.

关键词： 2-methylene-1, 4, 6-trispiro [4, 4] nonane light-curing dental matrix resin volumetric shrinkage mechanical properties

Synthesis, characteristics, and antibacterial activity of a rare-earth samarium/silver/titanium dioxide inorganic nanomaterials

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Journal of Rare Earths 2014年第8期32卷 727-732页

作者：吴江张国梁刘杰高蕻冰宋春香杜浩然张丽巩忠萍吕玉光 School of stomatology Jiamusi University Department of Prosthodontics The Affiliated Hospital of Medical College Qingdao University college of Pharmacy Jiamusi University

An inorganic nanomaterials combination of Sm, Ag, and TiO2 was synthesized using supercritical fluid drying （SCFD） combined with solgel techniques. The structure, photocatalysis and bacteriostatic activity of the materials were characterized by X-ray diffraction （XRD）, transmission electron microscopy （TEM）, X-ray photoelectron spectroscopy （XRPS）, photocatalytic performance, and antibacterial activity experiments. The XRD results showed that the average particle diameter of Sm/Ag/TiO2 was 14.62 nm and Ag and Sm ions were dispersed on the surface of TiO2 in a highly dispersed, amorphous form. The TEM image showed that the size of the particle was 12 nm using the scherer formula. The XPS result showed that the element Sm was doped and Ag was loaded inorganic nanomaterials successfully. Sm/Ag/TiO2 exhibited optimal photocatalytic properties at 600 oC, the photocatalytic optimal proportion of Sm/Ag/TiO2 was 2：2：100. When the molar ratio was 2：2：100, the bacteriostatic circle diameter was 16 mm for Staphylococcus aureus, the minimum bacteriostatic concentration was 200μg/mL for white beads coccus, and the minimum bactericidal concentration was 2×10^4μg/mL for white beads coccus. The SEM results showed that the antibacterial material attached to the candida albicans cell surface, cells appeared fold deformation. Therefore the inorganic nanomaterials Sm/Ag/TiO2 had high temperature resistance, good photocatalytic and antibacterial characteristics in visible light.

关键词： inorganic nanomaterials samarium/silver/titanium dioxide photocatalytic antibacterial activities rare earths

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

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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(p<0.05).The BSM containing resins can resist protein and bacteria adhesion(***)because it has increased hydrophobicity and a lower free energy surface(p<0.05).However,there were no statistically significant differences in cytotoxicity,surface roughness,and double bond conversion ***,the results indicate that changes in a material’s properties are not strictly proportional to its *** silicone resin 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

Dental stem cell-derived extracellular vesicles transfer miR-330-5p to treat traumatic brain injury by regulating microglia polarization

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International Journal of Oral Science 2022年第4期14卷 461-469页

作者： Ye Li Meng Sun Xinxin Wang Xiaoyu Cao Na Li Dandan Pei Ang Li Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research College of StomatologyXian Jiaotong UniversityXianChina State Key Laboratory Breeding Base of Basic Science of stomatology(Hubei-MOST)&Key Laboratory of Oral Biomedicine Ministry of Education School and Hospital of StomatologyWuhan UniversityWuhanChina Department of Periodontology College of StomatologyXi'an Jiaotong UniversityXi'anChina

Traumatic brain injury(TBI)contributes to the key causative elements of neurological ***,no effective therapeutics have been developed *** our previous work,extracellular vesicles(EVs)secreted by stem cells from human exfoliated deciduous teeth(SHED)offered new insights as potential strategies for functional recovery of *** current study aims to elucidate the mechanism of action,providing novel therapeutic targets for future clinical *** the mi RNA array performed and Real-time PCR validated,we revealed the crucial function of mi R-330-5p transferred by SHED-derived EVs(SHED-EVs)in regulating microglia,the critical immune modulator in central nervous *** R-330-5p targeted Ehmt2 and mediated the transcription of CXCL14 to promote M2 microglia polarization and inhibit M1 *** in our in vivo data,SHED-EVs and their effector mi R-330-5p alleviated the secretion of inflammatory cytokines and resumed the motor functional recovery of TBI *** summary,by transferring mi R-330-5p,SHED-EVs favored anti-inflammatory microglia polarization through Ehmt2 mediated CXCL14transcription in treating traumatic brain injury.

关键词： injury transferred resume

Properties of a New Dental Photocurable Matrix Resin with Low Shrinkage

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Journal of Wuhan University of Technology(Materials Science) 2011年第2期26卷 236-241页

作者：付静 State Key Laboratory of Oral Diseases West China College of StomatologySichuan University

In order to reduce the amount of volumetric shrinkage that occurs in dental composites as a result of curing,a new kind of dental matrix resin combining bisphenol-S-bis（3-meth acry late-2-hydroxy propyl）ether（BisS-GMA） with the expanding monomer unsaturated spiro orthoesters 2-methylene-1,4,6-trispiro[4,4] nonane （SOE） was prepared,with triethylene glycol dimethacrylate （TEGDMA） as *** （camphorquinone） of 1wt% and DMAEMA （2-（dimethylamino） ethyl meth acrylate） of 2wt% were used as photoinitiation system to initiate the copolymerization of the matrix *** performance including volumetric shrinkage,degree of conversion and condition of the ring-opening reaction of SOE,as well as curing time and the tensile bond strength were investigated respectively by the dilatometer,Fourier transfer infrared,the universal testing machine,and so *** ring-opening polymerization of SOE ***,the obtain copolymers were *** matrix resin containing BisS-GMA and SOE showed a reduced amount of volumetric shrinkage at 1.52%,which is a promising strategy for obtaining a polymer with a low amount of volumetric ***,the other properties were not compromised.

关键词： unsaturated spiro orthoester dental matrix resin volumetric shrinkage bisphenol-S-bis (3-methacrylato-2-hydroxy propyl) ether

The Influence of Type and Thickness of Sol-gel Derived Coatings on the in vitro Osteoblasts Behavior

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Journal of Wuhan University of Technology(Materials Science) 2005年第B12期20卷 114-117页

作者：贺刚陈治清 West China college of stomatology Sichuan UniversityChengdu 610041China

To evaluate the cellular response to the most commonly studied coatings fabricated by the sol-gel route, the influence of the coating thickness on the cellular response was studied. 1, 3, 5 layers of hydroxyapatite （ HA ）, fluorohydroxyapatite （ FHA ） and titania （ TiO2 ） were coated on the surface of commercially pure titanium （ cpTi ） discs respectively by the sol- gel route. CpTi discs were taken as control. XRD and SEM were employed to characterize the type and thickness of these coatings. In vitro osteoblasts behavior on the coatings was studied by the culture of MG63 cell line. The experimental results show all groups have good biocompatibilhy to osteoblasts . However, the type and thickness of the coatings influence the osteoblast response. The optimal type and thickness of sol-gel derived biocoatings were concluded.

关键词： sol-gel coating osteoblasts

CHARACTERISTICS OF LIP-MOUTH REGION IN SMILING POSITION FROM 80 PERSONS WITH ACCEPTABLE FACES AND INDIVIDUAL NORMAL OCCLUSIONS

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Chinese Medical Sciences Journal 2002年第3期17卷 189-192页

作者：张江恒陈扬熙周秀坤 Department of stomatology Peking Union Medical College Hospital Beijing 100730 college of stomatology West China University of Medical Science Chengdu 610041

OBJECTIVE: The characteristics of lip-mouth region including the soft and hard tissues in smiling position with frontal fixed position photographic computer-aided analysis were studied. METHODS: The subjects were 80 persons (40 male and 40 females, age range: 17 to approximately 25 years) with acceptable faces and individual normal occlusions. The subjects were asked to take maximum smiling position to accept photographic measurement with computer-aided analysis. RESULTS: The maximum smile line could be divided into 3 categories: low smile line (16.25%), average smile line (68.75%), and high smile line (15%). CONCLUSION: The method adopting maximum smiling position to study the lip-month region is reproducible and comparable. This study would be helpful to provide a quantitative reference for clinical investigation, diagnosis, treatment and efficacy appraisal.

关键词： person lip smilingObjective. The characteristics of lip mouth region including the soft and hard tissues in smiling position with frontal fixed position photographic computer aided analysis were studied. Methods. The subjects were 80 person

The Bisphosphonate Clodronate Modifying Hydroxyapatite Bioceramics for Bone Scaffold

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Journal of Wuhan University of Technology(Materials Science) 2005年第B12期20卷 98-101页

作者：罗恩胡静 West China college of stomatology Sichuan University Chengdu 610044 China

To investigate the efficiency of clodronate modifying HA bioceramics,and to evaluate the effect of clodronate modifying HA bioceramics on the cells in vitro,clodronate modified the porous HA bioceramics for bone scaffold by chelation .The outermost layer of the specimens was analyzd by XPS and FI-IR ,The depth profile was investigated by the argon-ion sputtering *** cell culture test was conducted using MC3T3-E1 osteoblastic cells,The cells were inoculated and cultured on the *** observation of the cells,MTT test and ALP activity test evaluated the cell attachment ,proliferation and activity on the *** cell culture test in cell quantity and morphology indicated active proliferation of the cells on the *** ALP activity of the cells cultured for 3d and 7d on clodronate-HA bioceramics was slightly higher than that on HA bioceramics ,but the difference was not signifcant,This result indicated that clodronate-HA bioeramics had favorable cytocompatibility to be used as bone scaffold with potential ability to improve asteogensis.

关键词： bisphosphonate hydroxyapatite bioceramics surface modification

Effect of microRNA-101 on apoptosis of rabbit condylar cartilage cells by inhibiting target gene SOX9

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Asian Pacific Journal of Tropical Medicine 2015年第6期8卷 501-504页

作者： Xin Li Zi-Xin Wang Zi-Sheng Wang Quan-Fang Li Repair Department of stomatology School of StomatologyLanzhou University Department of stomatology Gansu Provincial Maternity and Child-care Hospital Polymeric Chemistry and Physics College of Chemistry and Chemical EngineeringLanzhou University

Objective:To explore the effect of microRNA-101 on apoptosis of condylar cartilage cells and the specific mechanism of molecular ***:IL-1 was used to stimulate and establish the model of apoptosis of condylar cartilage *** expression change of miR-101 in control group was compared with that in IL-1 stimulation group by *** and down-regulation models of miR-101 were established by transfecting Mimics and Inhibitor and verified by *** cytometry was used to detect the effect of miR-101 overexpression and down-regulation on *** gene of miR-101 was analyzed and calculated through *** blot and Luciferase report assay were used to detect ***9 could become the target gene of ***:qRTPCR results showed that IL-1 stimulation could cause the increase of miR-101 *** the transfection of rabbit condylar cartilage cells by Mimics and Inhibitor,qRT-PCR results confirmed the significant effect of miR-101 overexpression and *** was confirmed by flow cytometry that overexpression of miR-101 could promote the apoptosis of condylar cartilage cells,and down-regulation of miR-101 could reduce the *** was confirmed by Western blot and Luciferase report assay that Sox9 was the target gene of *** miR-101 inhibited SOX9 expression through complementary pairing with 3'UTR of Sox9 ***:miR-101 can promote the apoptosis of condylar cartilage cells through inhibiting the protein level of target gene S0X9.

关键词： miR-101 SOX9 Condyle cartilage Apoptosis