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Expert consensus on the diagnosis and therapy of endo-periodontal lesions

International Journal of Oral Science 2024年第3期16卷 381-389页

作者： Bin Chen Yanan Zhu Minkui Lin Yangheng Zhang Yanfen Li Xiangying Ouyang Song Ge Jiang Lin Yaping Pan Yan Xu Yi Ding Shaohua Ge Faming Chen Zhongchen Song Shaoyun Jiang Jiang Sun Lijun Luo Junqi Ling Zhi Chen Lin Yue Xuedong Zhou Fuhua Yan Department of Periodontology Nanjing Stomatological HospitalAffiliated Hospital of Medical SchoolInstitute of StomatologyNanjing UniversityNanjingChina Department of Endodontics Nanjing Stomatological HospitalAffiliated Hospital of Medical SchoolInstitute of StomatologyNanjing UniversityNanjingChina Clinical Research Center for Oral Tissue Deficiency Diseases of fujian Province&fujian key laboratory of Oral Diseases&fujian provincial Engineering Research Center of Oral Biomaterial School and Hospital of StomatologyFujian Medical UniversityFuzhouChina Department of Periodontology Peking University School and Hospital of Stomatology&National Center for Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Research Center of Oral Biomaterials and Digital Medical DevicesBeijingChina School and Hospital of Stomatology Zunyi Medical UniversityZunyiChina Department of Stomatology Beijing TongRen HospitalCapital Medical UniversityBeijingChina Department of Periodontics School and Hospital of StomatologyChina Medical UniversityShenyangChina Department of Periodontology The Affiliated Stomatological Hospital of Nanjing Medical UniversityJiangsu Key Laboratory of Oral DiseasesNanjing Medical UniversityNanjingChina State key laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Periodontics West China Hospital of StomatologySichuan UniversityChengduChina Department of Periodontology School and Hospital of StomatologyShandong University&Shandong Key Laboratory of Oral Tissue Regeneration&Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration&Shandong Provincial Clinical Research Center for Oral Diseases JinanJinanChina State key laboratory of Oral&Maxillofacial Reconstruction and Regeneration National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral DiseasesDepartment of periodontologySchool of StomatologyThe Fou

Endo-periodontal lesions (EPLs) involve both the periodontium and pulp tissue and have complicated etiologies and pathogenic mechanisms,including unique anatomical and microbiological characteristics and multiple contributing *** etiological complexity leads to difficulties in determining patient prognosis,posing great challenges in clinical ***,EPL-affected teeth require multidisciplinary therapy,including periodontal therapy,endodontic therapy and others,but there is still much debate about the appropriate timing of periodontal therapy and root canal *** compiling the most recent findings on the etiology,pathogenesis,clinical characteristics,diagnosis,therapy,and prognosis of EPL-affected teeth,this consensus sought to support clinicians in making the best possible treatment decisions based on both biological and clinical evidence.

关键词： diagnosis periodontal lesions

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Mesoporous V-doped TiO_2 Nanoparticles as New Adsorbents for the Removal of Methylene Blue from Color Textile Wastewater

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Chinese Journal of Structural Chemistry 2015年第1期34卷 56-68页

作者：郑柳萍颜桂炀顾泉谢丽珊龙金林 College of Chemistry and Chemical Engineering Fujian Normal University fujian key laboratory of Polymer Materials Department of Chemistry Ningde Normal University fujian provincial key laboratory of photocatalysisstate key laboratory breeding base

V-doped TiO2 nanoparticles（NPs） as dye adsorbents are synthesized by the co-precipitation method and characterized by X-ray powder diffraction, transmission electron microscope, N2 adsorption at 77 K, and X-ray photoelectron spectroscopy. The adsorption of methylene blue（MB） on the V-doped TiO2 NPs is studied in detail by varying the calcination temperature and V doping amount of the adsorbent, adsorbate concentration, adsorbent dosage, agitation rate, reaction temperature, and p H. The comparison of dye adsorption on V-doped TiO2 and parent TiO2 demonstrates that the adsorptive activity of TiO2 can be improved by V doping. The enhanced adsorptive performance can be attributed to the tremendous changes in texture, structure, and surface morphology of adsorbent. The adsorption kinetic analysis shows that the adsorption follows the pseudo-second order kinetics. The apparent activation energy for adsorption is calculated by Arrhenius formula to be 37.6 k J·mol-1, indicating that the adsorption is controlled by both of the diffusion and interfacial adsorption steps. The adsorption data are analyzed using Langmuir and Freundlich isotherms and the results indicate that the Langmuir model provides better correlation of the experimental data. The results conclusively show that the adsorption of MB is a spontaneous behavior and endothermic reaction with the ΔH value of 17.60 k J·mol-1.

关键词： V-doped TiO2, methylene blue, adsorption, kinetics, thermodynamics

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Expert consensus on difficulty assessment of endodontic therapy

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International Journal of Oral Science 2024年第1期16卷 15-25页

作者： Dingming Huang Xiaoyan Wang Jingping Liang Junqi Ling Zhuan Bian Qing Yu Benxiang Hou Xinmei Chen Jiyao Li Ling Ye Lei Cheng Xin Xu Tao Hu Hongkun Wu Bin Guo Qin Su Zhi Chen Lihong Qiu Wenxia Chen Xi Wei Zhengwei Huang Jinhua Yu Zhengmei Lin Qi Zhang Deqin Yang Jin Zhao Shuang Pan Jian Yang Jiayuan Wu Yihuai Pan Xiaoli Xie Shuli Deng Xiaojing Huang Lan Zhang Lin Yue Xuedong Zhou State key laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Operative Dentistry and Endodontics West China Hospital of StomatologySichuan UniversityChengduChina Department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina Department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Clinical Research Center for Oral DiseasesNational Center for StomatologyShanghai Key Laboratory of StomatologyShanghaiChina Department of Operative Dentistry and Endodontics Hospital of StomatologyGuanghuaSchool of StomatologySun Yat-Sen University&Guangdong Provincial Key Laboratory of StomatologyGuangzhouChina The 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 Operative Dentistry&Endodontics School of StomatologyThe Fourth Military Medical UniversityXi’anChina Department of Endodontics Beijing Stomatological HospitalSchool of StomatologyCapital Medical UniversityBeijingChina State key laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Preventive Dentistry West China Hospital of StomatologySichuan UniversityChengduChina State key laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases&Department of Geriatric dentistry West China Hospital of Stomatology

Endodontic diseases are a kind of chronic infectious oral disease. Common endodontic treatment concepts are based on the removal of inflamed or necrotic pulp tissue and the replacement by gutta-percha. However, it is very essential for endodontic treatment to debride the root canal system and prevent the root canal system from bacterial reinfection after root canal therapy(RCT). Recent research, encompassing bacterial etiology and advanced imaging techniques, contributes to our understanding of the root canal system’s anatomy intricacies and the technique sensitivity of RCT. Success in RCT hinges on factors like patients, infection severity, root canal anatomy, and treatment techniques. Therefore, improving disease management is a key issue to combat endodontic diseases and cure periapical lesions. The clinical difficulty assessment system of RCT is established based on patient conditions, tooth conditions, root canal configuration, and root canal needing retreatment, and emphasizes pre-treatment risk assessment for optimal outcomes. The findings suggest that the presence of risk factors may correlate with the challenge of achieving the high standard required for RCT. These insights contribute not only to improve education but also aid practitioners in treatment planning and referral decision-making within the field of endodontics.

关键词： anatomy difficulty treatment

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Growth mechanism of palladium clusters on rutile TiO_2 (110) surface

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Journal of Natural Gas Chemistry 2012年第5期21卷 544-555页

作者： Weina Zhao Huaxiang Lin Yi Li Yongfan Zhang Xin Huang Wenkai Chen Department of Chemistry Fuzhou UniversityFuzhou 350116FujianChina fujian provincial key laboratory of Photocatalysis-State key laboratory breeding base Fuzhou UniversityFuzhou 350002FujianChina

Oxide-supported transition metal systems have been the subject of enormous interest due to the improvement of catalytic properties relative to the separate *** in this paper,we embark on a systematic study for Pd n （n=1-5） clusters adsorbed on TiO2 （110） surface based on DFT-GGA calculations utilizing periodic supercell models.A single Pd adatom on the defect-free surface prefers to adsorb at a hollow site bridging a protruded oxygen and a five-fold titanium atom along the [110] direction,while Pd dimer is located on the channels with the Pd-Pd bond parallel to the *** to the transition states （TSs） search,the adsorbed Pd trimer tends to triangular growth mode,rather than linear mode,while the Pd4 and Pd5 clusters prefer three-dimensional （3D） ***,the oxygen vacancy has almost no influence on the promotion of Pd n cluster ***,of particular significance is that the Pd-TiO2 interaction is the main driving force at the beginning of Pd nucleation,whereas the Pd-Pd interaction gets down to control the growth process of Pd cluster as the cluster gets *** is hoped that our theoretical study would shed light on further designing high-performance TiO2 supported Pd-based catalysts.

关键词： density functional theory TiO2 (110) surface palladium cluster adsorption

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Photocatalytic Denitrogenation over Modified Waste FCC Catalyst

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China Petroleum Processing & Petrochemical Technology 2013年第3期15卷 33-37页

作者： Zheng Liuping Lin Mei Huang Yingying Yan Guiyang Zheng Binquan Li Ling Chemistry and Materials Science Fujian Normal University Ningde Teachers College fujian provincial key laboratory of Photocatalysis–State key laboratory breeding base

The strontium modified waste FCC catalyst was prepared by magnetic stirring method and characterized by Xray diffractometry(XRD),UV-Vis diffuse reflectance spectrometry(DRS),X-ray photoelectron spectroscopy(XPS)and scanning electron microscopy(SEM).Meanwhile,its photocatalytic denitrogenation performance was evaluated in terms of its ability to degrade the N-containing simulation oil under visible light.A mixture of strontium nitrate solution(with a concentration of 0.5 mol/L)and waste FCC catalyst was calcined at 400℃for 5 h prior to taking part in the photocatalytic denitrogenation *** test results showed that the photocatalytic degradation rate of pyridine contained in simulation oil in the presence of the strontium modified FCC catalyst could reach 92.0% under visible light irradiation for 2.5 h.

关键词： waste FCC catalyst photocatalysis denitrogenation

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Bonding of Hydroxyl and Epoxy Groups on Graphene:Insights from Density Functional Calculations

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Chinese Journal of Structural Chemistry 2013年第10期32卷 1475-1484页

作者：贾田田孙宝珍林华香李奕陈文凯 Department of Chemistry Fuzhou University School of Chemistry & Chemical Engineering Guangxi University fujian provincial key laboratory of Photocatalysis-state key laboratory breeding base Fuzhou University

Density functional theory and GGA-PW91 exchange correlation function were performed to simulate the bonding behavior of hydroxyl and epoxy groups on the graphene surface. We compared the different binding energies for two epoxy groups, as well as one hydroxyl group and one epoxy group on all possible positions within a 6-fold ring, respectively. The calculated results suggest that two oxygen-containing groups always tend to bind with the neighboring carbon atoms at the opposite sides. Moreover, two hydroxyl groups on the meta position are unstable, and one of the hydroxyl groups easily migrates to the para position. In contrast to the disperse arrangement, the aggregation of multiply hydroxyl groups largely enhances the binding energy of every hydroxyl group. It is worth noting that the binding sites and hydrogen bonds play an important role in stability. Our work further points out the number of oxygen-containing groups and the location of oxide region largely influence the electronic properties of graphene oxide.

关键词： density functional theory graphene hydroxyl epoxy bonding

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Adsorption of Co_2B_2 and Ni_2B_2 Clusters on the TiO_2 (110) Surface: a Density Functional Study

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Chinese Journal of Structural Chemistry 2013年第3期32卷 341-348页

作者：曾庆松孙宝珍赵伟娜林华香李奕陈文凯 Department of Chemistry Fuzhou University School of Chemistry & Chemical Engineering Guangxi University fujian provincial key laboratory of Photocatalysis-State key laboratory breeding base Fuzhou University

based on density functional theory and generalized gradient approximation calculations, the adsorption of Co2B2 and Ni2B2 clusters on the rutile TiO2 （110） surface has been investigated utilizing periodic supercell models. Unambiguously, the results demonstrate that the hollow site turns out to be preferable for Co2B2 cluster while Ti2 site is for Ni2B2 cluster to adsorb. Orbital population analysis indicates a strong interaction between Co2B2 and O atom of TiO2 surface, which can be attributed to the overlap of Co 3d and surface O 2p orbital. Similarly, for Ni2B2 , the bonding interaction occurs mostly through the interaction of Ni 3d/4s and O 2p orbitals. Note that, there is also an interaction within the Co2B2 clusters （Ni2B2） through B 2s/2p and Co 3d orbitals （Ni 3d/4s）. Moreover, orbital analysis results shows that the strong bonding between Ni2B2 and Ti2 site is due to the overlap of HOMO of Ni2B2 and d-orbital of five-coordinated titanium atoms.

关键词： TiO2 Ni2B2 Co2B2 adsorption density functional theory

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Synthesis and properties of a novel squaraine dye modified by ferrocene

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Chinese Chemical Letters 2011年第11期22卷 1301-1304页

作者： Yang Wei Huang Nan Yan Fu fujian provincial key laboratory of Photocatalysis-State key laboratory and breeding base Co-developed by Province and Ministry College of Chemistry and Chemical Engineering Fuzhou University Fuzhou 350002 China

A novel squaraine dye（SQ） modified by ferrocene has been synthesized through（E）-dodecyl-2-ferrocenyl vinyl-1H-pyrrole and squaric *** molecular structure of SQ was characterized by ~1H NMR,^（13）C NMR,MS and elemental *** is high soluble in common *** maximum absorptions of SQ in different solvents are in the range of 708-734 nm,exhibiting positive solvatochromism with increasing solvent *** optical and electrical properties of SQ indicate that it is a promising electron donor material for bulk-heterojunction organic solar cell.

关键词： Squaraine dye Ferrocene Bulk-heterojunction organic solar cell

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Characterizations and Photocatalytic Activities of Nanocrystalline MTiO_3 (M=Sr, Pb, Co) Prepared via a General Self-propagating Combustion Method

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Chinese Journal of Structural Chemistry 2012年第12期31卷 1852-1860页

作者：朱兰瑾薛珲肖荔人陈庆华 College of Chemistry and Chemical Engineering Fujian Normal University College of Environmental Science and Engineering Fujian Normal University fujian provincial key laboratory of Photocatalysis-State key laboratory breeding base Fuzhou University College of Materials Science and Engineering Fujian Normal University

Nanocrystalline MTiO3 （M = St, Pb, Co） were prepared by a general self-pro- pagating combustion method. The samples were characterized by X-ray diffraction （XRD） analysis, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, N2 adsorption and UV-vis diffuse reflectance spectra （DRS）. The photocatalytic activity of MTiO3 （M = Sr, Pb, Co） was evaluated by the photocatalytic degradation of methyl orange （MO）. MTiO3 （M = Sr, Pb, Co） having the same core element showed distinctly different photocatalytic activity due to the different coordinating atoms. Factors affecting the photocatalytic activity of MTiO3 （M = Sr, Pb, Co） were discussed. It was suggested that the structures of TiO6 octahedra and the electronic property were the predominant factors of the photocatalytic behavior for MTiO3 （M = Sr, Pb, Co）.

关键词： MTiO3 (M = Sr Pb Co) photocatalytic self-propagating combustion

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Density Functional Theory Studies on the Adsorption of CO_2 on Different CaO Surfaces

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Chinese Journal of Structural Chemistry 2013年第11期32卷 1715-1723页

作者：张莹胡建明曹全贞邱美李奕黄昕章永凡 College of Chemistry and Chemical Engineering Fuzhou University Fuzhou Command Academy The Chinese People’s Armed Police Force fujian provincial key laboratory of Photocatalysis-State key laboratory breeding base Fuzhou University

Carbon dioxide adsorbed on different kinds of CaO surfaces has been investigated with the help of the first principle density functional theory plane wave calculations. Various possible configurations have been considered and the calculated results showed that CO2 was strongly adsorbed by C atom bonded with the CaO （001） and （110） surfaces with adsorption energies of 1.38 and 3.22 eV, respectively. The adsorption of CO2 molecule on defect surfaces is complicated compared with that on the pristine surfaces. The adsorption energy of CO2 absorbed on the CaO（110） surface is larger than that of CaO（001） surface when the type of defect surface is the same.

关键词： carbon dioxide CaO surface DFT surface defects

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