根据ISO6872牙科陶瓷标准制备KAVO氧化锆陶瓷-Vita VM9饰面瓷的双层瓷复合结构的三点弯曲强度样品,氧化锆与饰面瓷的厚度比为1∶ 1, 研究多次烧结对牙科氧化锆陶瓷-饰面瓷双层瓷结构的力学性能的影响,观察样品双层瓷结合界面,分析断裂模式.结果表明:随烧结次数的增加,弯曲强度未明显改变,强度约996～1020 MPa.应力位移曲线显示氧化锆和饰面瓷同时发生碎裂.扫描电镜观察发现多次烧结后界面致密结合,无明显缺陷.
参考文献
| [1] | 张钊,陈树国,董福生,李雅娟,郭长军,孟令强.烧结次数对金属烤瓷冠强度的影响[J].口腔颌面修复学杂志,2004(04):240-242. |
| [2] | 张钊,陈树国,李雅娟,董福生,郭长军,孟令强.烧结次数对金瓷冠微观结构的影响[J].现代口腔医学杂志,2004(04):317-319. |
| [3] | Mackert J R;Williams A L .Microcracks in dental porcelain and their behavior during multiple firing[J].Journal of Dental Research,1996,75(07):1484-1490. |
| [4] | Nielsen J P;Tuccillo J J .Calculation of interfacial stress in dental porcelain bonded to gold alloy substrate[J].Journal of Dental Research,1972,51:1043-1047. |
| [5] | Steiner P J;Kelly R J;Giuseppetti A A .Compatibility of ceramic-ceramic system for fixed prosthodontics[J].International Journal of Prosthodontics,1997,10:375-380. |
| [6] | S. Warren Twiggs;J. Rodway Mackert Jr;Amalia L. Oxford;Janet W. Ergle;Petra E. Lockwood .Isothermal phase transformations of a dental porcelain[J].Dental materials,2005(6):580-585. |
| [7] | Mackert JR Jr;Twiggs SW;Russell CM;Williams AL .Evidence of a critical leucite particle size for microcracking in dental porcelains.[J].Journal of Dental Research: Official Publication of the International Association for Dental Research,2001(6):1574-1579. |
| [8] | Giuseppe Isgro;Cornelis J. Kleverlaan;Hang Wang;Albert J. Feilzer .The influence of multiple firing on thermal contraction of ceramic materials used for the fabrication of layered all-ceramic dental restorations[J].Dental materials,2005(6):557-564. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%