华西口腔医学杂志2017，Vol.35Issue(2)：150-154,5.DOI:10.7518/hxkq.2017.02.008
微波烧结与常规烧结对牙科用氧化锆摩擦磨损性能的影响
Study on friction and wear properties of dental zirconia ceramics processed by microwave and conventional sintering methods
胡国新 1杨瑛 2江月梅 3夏文静2
作者信息
- 1. 南昌大学抚州医学院,抚州 344000
- 2. 南昌大学附属口腔医院修复一科,南昌 330006
- 3. 九江学院附属口腔医院修复科,九江 332000
- 折叠
摘要
Abstract
Objective This study evaluated the wear of an antagonist and friction and wear properties of dental zirconia ceramic that was subjected to microwave and conventional sintering methods.Methods Ten specimens were fabricated from Lava brand zirconia and randomly assigned to microwave and conventional sintering groups. A profile tester for surface rough-ness was used to measure roughness of the specimens. Wear test was performed, and steatite ceramic was used as antagonist. Friction coefficient curves were recorded, and wear volume were calculated. Finally, optical microscope was used to observe the surface morphology of zirconia and steatite ceramics. Field emission scanning electron microscopy was used to observe the microstructure of zirconia.Results Wear volumes of microwave and conventionally sintered zirconia were (6.940±1.382)× 10-2, (7.952±1.815) ×10-2 mm3, respectively. Moreover, wear volumes of antagonist after sintering by the considered methods were (14.189±4.745)×10-2, (15.813±3.481)×10-2 mm3, correspondingly. Statistically significant difference was not observed in the wear resistance of zirconia and wear volume ofsteatite ceramic upon exposure to two kinds of sintering methods. Optical microscopy showed that ploughed surfaces were apparent in zirconia. The wear surface of steatite ceramic against had craze, accompanied by plough. Scanning electron microscopy showed that zirconia was sintered compactly when subjected to both conventional sintering and microwave methods, whereas grains of zirconia sintered by microwave alone were smaller and more uniform.Conclusion Two kinds of sintering methods are successfully used to produce dental zirconia ceramics with similar friction and wear properties.关键词
氧化锆/磨损/微波烧结/常规烧结Key words
zirconia/wear/microwave sintering/conventional sintering分类
医药卫生引用本文复制引用
胡国新,杨瑛,江月梅,夏文静..微波烧结与常规烧结对牙科用氧化锆摩擦磨损性能的影响[J].华西口腔医学杂志,2017,35(2):150-154,5.
