中国组织工程研究与临床康复2011，Vol.15Issue(8)：1421-1424,4.DOI:10.3969/j.issn.1673-8225.2011.08.022
烧结温度对氧化锆基台材料机械性能的影响
Effect of sintering temperature on mechanical properties of zirconia ceramic abutment materials
摘要
Abstract
BACKGROUND: Different sintering temperatures and methods greatly affect the mechanical properties of zirconia materials.There are many reports about the sintering temperatures and methods of zirconia, the key to ensure good mechanical properties is to select proper sintering method and temperature.OBJECTIVE: To study the effects of sintering temperature and methods on mechanical properties of zirconia ceramic abutment materials.METHODS: Nano-side zirconia powder was used in the test to prepare specimens by dry press method and cold isostatic press method. The specimens were pre-sintered at 1080 ℃ , then were turned and processed. The temperatures of second-sintering were 1350 ℃ and 1450 ℃ respectively. These two groups of specimens were measured on flexural strength, Vicker's hardness and fractu re toughness. All the results were compared and analyzed.RESULTS AND CONCLUSION: All mechanical properties of specimens in 1080 ℃/1450 ℃ sintering groups were higher than that of 1080 ℃/1 350 ℃ groups. When the second-time sintering temperature was 1450 ℃ , the three-point bending strength,Vicker's hardness and fracture toughness were (858.74±94.94) MPa, (16.00±0.42) GPa and (6.96±0.55) MPa·m1/2 respectively.Zirconia specimens sintered at 1080 ℃/1450 ℃ have good enough mechanical properties to fit the requirement of all-ceramic abutment materials.关键词
氧化锆/牙种植全瓷基台/烧结温度/机械性能/口腔生物材料分类
医药卫生引用本文复制引用
张慧敏,杨建军,林映辉,王永亮,杨凤丽,王大山,吴品林..烧结温度对氧化锆基台材料机械性能的影响[J].中国组织工程研究与临床康复,2011,15(8):1421-1424,4.基金项目
青岛市科技计划项目的部分研究内容(08-2-1-5-nsh) （08-2-1-5-nsh）
