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Infl uences of Iodonium Salts on the Properties of a Hybrid Composite Resin Containing Bis S-GMA and Expanding Monomer Modifi ed Epoxy

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Journal of Wuhan University of Technology(Materials Science) 2015年第6期30卷 1184-1190页

作者：刘文佳 FU Jing WU Xiangnan MA Yuanyuan LIU Xiaoqing liao yunmao 王航 Department of Prosthodontics West China Hospital of Stomatology Sichuan University State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Department of Prosthodontics Affi liated Hospital of Qingdao University Guanghua School of Stomatology Hospital of Stomatology Sun YatSen University Guangdong Provincial Key Laboratory of Stomatology

In order to reduce shrinkage and improve the mechanical properties of dental composite resins, we designed a hybrid resin formulation containing a novel matrix resin, Bis S-GMA [bisphenol-Sbis（3-methacrylato-2-hydroxypropyl）ether], and epoxy modifi ed by a spiro-orthocarbonate（SOC） expanding monomer. Then, we tested the effects of an iodonium salt, diphenyliodonium hexafl uorphosphate（DPIHFP）, on the properties of the hybrid resin with seven different concentrations. The hybrid resin was polymerized by a ternary photo-initiator system. The volumetric shrinkage（VS）, degree of conversion（DC） and compressive strength（CS） were assessed using Acu Vol^TM, FTIR and a universal testing machine, respectively. The VS, DC and CS were improved with increasing DPIHFP concentration, but a high concentration of DPIHFP had a negative infl uence on the mechanical properties of the hybrid resin and offered no added improvement in the VS and DC. The best performance of a composite resin containing Bis S-GMA and SOC-modifi ed epoxy was achieved with 2wt% DPIHFP. The results also indicated that the resin containing Bis S-GMA was superior to that containing Bis-GMA in terms of VS, DC and CS.

关键词： Bis S-GMA diphenyliodonium hexafluorphosphate SOC volume shrinkage degree of conversion compressive strength

Low Temperature Degradation of Alumina-toughened Zirconia in Artificial Saliva

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Journal of Wuhan University of Technology(Materials Science) 2013年第4期28卷 844-848页

作者：赵永旗 JIANG Li liao yunmao WANG Chuanyong LU Junjun ZHANG Jingchao 李伟 Department of Stomatology College of Medicine Zhejiang University State Key Laboratory of Oral Diseases Sichuan University Hainan Stomatological Hospital

The long-term aging behavior of an alumina-toughened zirconia （ATZ） ceramic in artificial saliva hydrothermal atmosphere was determined and compared with that of tetragonal zirconia polycrystals doped with 3mo1% Y203 （3Y-TZP）. The specimens of 3Y-TZP and ATZ were aged in distilled water and artificial salivary respectively at 134 ~C. Monoclinic phase content was evaluated by X-ray diffraction （XRD） analysis. Specimen strength was determined by a biaxial bending test. Surface screening was done using an atomic force microscope （AFM）. No statistically significant influence of any treatment on strength was demonstrated for either material. However, XRD measurements revealed ATZ＇s anti-aging properties were much better than TZP after the aging treatment. Therefore, ATZ can be applied to the field of dentistry. Artificial saliva in ceramic surface sediments may be useful for stren^heninl ceramics.

关键词： zirconia alumina aging artificial saliva LTD

The Effect of Alumina Content on Fracture Property of All-ceramics Zirconia

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Journal of Wuhan University of Technology(Materials Science) 2013年第1期28卷 73-78页

作者：张东姣 liao yunmao LI Aijie1 XU Zujie SONG Dawei WANG Qi 陈新民 Prosthodontics West China College of Stomatology Sichuan University State Key Laboratory of Oral Diseases West China College of Stomatology Sichuan University

The purpose of the present study was to evaluate the effect ofA1203 content on the fracture property of all-ceramics ZrO2. To improve the all-ceramics ZrO2 restoration mechanics properity ,96 samples containing 0,5,10 and 15 wt% of A1203 particles were prepared by cold isostatic pressing （200 MPa） and 1 550 ℃ sintered .The phase was analyzed by X-ray diffraction analysis and the bulk densities of the samples were made using Archimedes principle. Samples were randomly divided into four groups. In each group, 24 specimens were prepared so that the angle between notch and specimen＇s long axis is 90° and 60°. Notch depths were 1 mm for all samples. Samples were loaded with three-point bending method. 90° cut samples were used to measure fracture toughness while 60°cut samples were used to observe fracture curve by taking points on the fracture extension path under microscope, plotting points on coordinates, generating fitting curve by software ＂Origin＂, and analyzing the microstructure of the specimen fracture surfaces by scanning electron microscopy （SEM）.The results show that the increment ofA1203 has insignificant effect on the densification of all-ceramic *** analysis shows that the specimen is comprised of t-ZrO2 and a- A1203 before fracture while fracture surface is m-ZrO2, t-ZrO2 and a-A1203. ZrO2 containing 10% A1203 has the optimum mechanical properties and unconspicuous crack propagation and distribution. The observations may provide a reference for the materials selection, shaoe design, and production orocess of all-ceramic crown and bridge.

关键词： ZrO2 A1203 all-ceramics notch fracture load fracture curve microstructure

Influence of Alumina Addition on the Optical Property of Zirconia/Alumina Composite Dental Ceramics

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Journal of Wuhan University of Technology(Materials Science) 2011年第4期26卷 690-695页

作者：蒋丽李伟 State Key Laboratory of Oral Diseases Sichuan University

The influence of various alumina additions on the optical property of zirconia/alumina composite ceramics was investigated. The relative sintered densities, transmittances, color and the microstructure of the composite ceramics were studied. The experimental results showed that the relative sintered densities and transmittances decreased with alumina addition. The lightness increased obviously but the chroma change was small. Pure zirconia nanopowders sintered densely could obtain the relatively high transmittance, while the transmittance and the lightness of slight addition changed significantly. The zirconia/alumina composite ceramics with alumina addition less than 7.5wt% could achieve the relatively stable and reliable optical properties.

关键词： alumina addition zirconia/alumina ceramics transmittance color optical properties

自制IPS-Empress2铸瓷快速包埋材料的膨胀特性研究

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生物医学工程学杂志 2006年第1期23卷 117-120页

作者：贺刚廖运茂岑远坤四川大学华西口腔医学院成都610041

IPS-Em press2铸瓷是国内外广泛应用的全瓷修复系统。为取代昂贵的进口专用包埋材料,国内已自制出与之相配套的快速包埋材料,本文研究的是其最关键的膨胀特性。采用千分尺位移计和热机械分析仪,分别测量了进口专用快速包埋材料和自制快... 详细信息

IPS-Em press2铸瓷是国内外广泛应用的全瓷修复系统。为取代昂贵的进口专用包埋材料,国内已自制出与之相配套的快速包埋材料,本文研究的是其最关键的膨胀特性。采用千分尺位移计和热机械分析仪,分别测量了进口专用快速包埋材料和自制快速包埋材料的凝固膨胀及热膨胀性能,进行了统计分析和比较。结果显示,进口专用快速包埋材料的凝固膨胀率、热膨胀率和总膨胀率分别为0.858%、1.11%和1.17%;自制包埋材料的上述指标分别为0.798%、1.09%和1.16%,三项指标均无统计学差异,表明自制快速包埋材料的膨胀性能指标接近IPS-Em press2专用快速包埋材料,能满足IPS-Em press2铸瓷精密铸造的要求。

关键词：铸造陶瓷快速包埋材料凝固膨胀热膨胀

一种新型复相Ca-P支架材料的制备及生物学行为

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稀有金属材料与工程 2007年第A2期36卷 75-78页

作者：黄炎鲜苏琴王诗美王婷婷廖运茂四川大学口腔生物医学工程教育部重点实验室四川成都610041

采用溶胶-凝胶法制备纯羟基磷灰石支架,并在其表面构造双相钙磷陶瓷膜层。并用SEM,FTIR,XRD对其进行表征,结果表明该法制得的材料为孔隙彼此贯通的多孔结构,孔径约为300～600μm,涂膜厚度约为20～50μm,孔壁上分布大量纳米级微孔。与对... 详细信息

采用溶胶-凝胶法制备纯羟基磷灰石支架,并在其表面构造双相钙磷陶瓷膜层。并用SEM,FTIR,XRD对其进行表征,结果表明该法制得的材料为孔隙彼此贯通的多孔结构,孔径约为300～600μm,涂膜厚度约为20～50μm,孔壁上分布大量纳米级微孔。与对照材料HA相比,成骨细胞在4天后可以更多的粘附到该材料表面增殖分化(P<0.05):体内埋植实验表明,经12周该材料具有更早的成骨效应和更多的成骨量(P<0.05)新型复相Ca-P支架材料有利于骨组织修复。

关键词：钙磷陶瓷溶胶-凝胶法支架生物相容性

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可切削渗透陶瓷(MIC)渗透玻璃的研究

生物医学工程学杂志 2000年第1期17卷 33-36页

作者：廖运茂杨禾鲜苏琴薛玉萍柴枫华西医科大学口腔医学院成都610041 上海静安区牙防所

讨论可切削渗透陶瓷 (MIC)渗透玻璃的制备技术及性能表征。采用氧化铝坩埚于 145 0℃熔融成玻璃 ,筛选玻璃生成范围 ,采用热分析仪测定玻璃的热学性能 ,对晶化后的微晶玻璃采用 X射线衍射分析进行物相鉴别 ,用三点弯曲法测定力学性能。... 详细信息

讨论可切削渗透陶瓷 (MIC)渗透玻璃的制备技术及性能表征。采用氧化铝坩埚于 145 0℃熔融成玻璃 ,筛选玻璃生成范围 ,采用热分析仪测定玻璃的热学性能 ,对晶化后的微晶玻璃采用 X射线衍射分析进行物相鉴别 ,用三点弯曲法测定力学性能。确立了母体玻璃的化学组成 ,对传统氟金云母玻璃进行了改进 ,增加了 B2 O3的用量 ,并添加了 L a2 O3及 L i2 O,生成了具有较低熔点的玻璃 ,晶化后析出氟金云母晶相。氟金云母玻璃可按性能要求进行组分调整。本实验证实改进后的

关键词：渗透玻璃氟金云母牙科材料 MIC

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GⅠ-Ⅱ型镧系、铈系玻璃料的研制

实用口腔医学杂志 1999年第3期15卷 207-209页

作者：孟玉坤巢永烈廖运茂成都华西医科大学口腔医学院

目的：介绍ＧⅠ－Ⅱ型玻璃的制作方法及配方，并对其热特性、高温浸润性进行测试，为临床应用提供理论参考。方法：自制ＧⅠ－Ⅱ型镧系、ＧⅠ－Ⅱ型铈系玻璃，用石英比较法测定其热膨胀曲线，作图法求出热特性参数。比较ＧⅠ－Ⅱ型、Ｇ... 详细信息

目的：介绍ＧⅠ－Ⅱ型玻璃的制作方法及配方，并对其热特性、高温浸润性进行测试，为临床应用提供理论参考。方法：自制ＧⅠ－Ⅱ型镧系、ＧⅠ－Ⅱ型铈系玻璃，用石英比较法测定其热膨胀曲线，作图法求出热特性参数。比较ＧⅠ－Ⅱ型、ＧⅠ－Ⅱ型镧系、ＧⅠ－Ⅱ型铈系、ＶｉｔａＩｎ－ｃｅｒａｍ玻璃料在１１００℃对致密氧化铝片的浸润性能。结果：ＧⅠ－Ⅱ型镧系、ＧⅠ－Ⅱ型铈系玻璃具有比氧化铝稍低的热膨胀系数。以５ｗｔ％的ＣｅＯ２取代Ｌａ２Ｏ３后，热膨胀曲线与玻璃的典型曲线明显不同，有析晶趋势。４种玻璃对致密氧化铝表面的浸润性相近（Ｐ＞０．０５）。结论：ＧⅠ－Ⅱ型铈系玻璃中可有晶体析出，实质上是一种微晶玻璃。４种玻璃对氧化铝均有良好的浸润性。

关键词：玻璃料热特性浸润性牙科材料

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钛合金粉浆涂塑冠桥材料的生物安全性评价

华西医科大学学报 2001年第2期32卷 257-259,263页

作者：柴枫梁星巢永烈廖运茂韩晓莉华西医科大学附属口腔医院修复科成都610041

目的　评价钛合金粉浆涂塑冠桥材料的生物安全性。方法　采用该材料分别对仓鼠、NIH纯系小鼠和豚鼠进行急性毒性、细胞毒性、致敏性、口腔粘膜刺激性、溶血及微核等项动物试验。结果　钛合金粉浆涂塑冠桥材料的溶血率为 2 .2 1% ,低于 5... 详细信息

目的　评价钛合金粉浆涂塑冠桥材料的生物安全性。方法　采用该材料分别对仓鼠、NIH纯系小鼠和豚鼠进行急性毒性、细胞毒性、致敏性、口腔粘膜刺激性、溶血及微核等项动物试验。结果　钛合金粉浆涂塑冠桥材料的溶血率为 2 .2 1% ,低于 5 % ,说明其有良好的血液相容性。而且 ,该材料无明显的细胞毒性作用 ,也未见任何急性毒性反应 ,对口腔粘膜无刺激性 ,无致敏性 ,微核试验未见潜在致突变性。结论　钛合金粉浆涂塑冠桥材料用于临床具有可靠的生物安全性。

关键词：冠桥材料生物安全性毒理试验粉浆涂塑钛合金