An in vitro study on wear properties of zirconia ceramic
RUAN Jian-yong
ZHANG Shao-feng
ZHANG Zhen-zhen
WU Wei-liang
YE Xiao-ang
Abstract：AIM:To investigate the wear characteristics of zirconia ceramic paired with bovine enamel,hot-pressed ceramic and veneering porcelain respectively.METHODS:Cylindrical chairside zirconia ceramic specimens (6 mm in length,3 mm in diameter) were randomly divided into 3 groups,bovine enamel specimens,lithium disilicate glass-ceramic specimens and feldspathic porcelain specimens were served as the antagonists (n =6) respectively.The specimens were then loaded in a wear simulator with 10 N,100,000 cycles,in artificial saliva,at the speed of 100 r/min,turning radius of 2.5 mm and in an uniform circular motion condition.Height loss,volume loss and surface roughness of the specimens were respectively measured with a 3 D profilometer.SEM was applied to investigate the worn surfaces.RESULTS:Height loss and volume loss of bovine enamel wear were the lowest and veneering porcelain were the highest (P ＜ 0.05).Zirconia ceramic of the bovine enamel group also showed lower wear loss than hot-pressed ceramic,the veneering porcelain group showed the highest wear loss (P ＜ 0.05).SEM observation demonstrated that the bovine enamel group displayed relatively smooth surface;the wear surface of the hot-pressed ceramic group was broad furrow-like wear tracks;the veneering porcelain group showed intensive furrow-like wear tracks.CONCLUSION:The bovine enamel has stronger antiabradability,followed by the hot-pressed ceramic and the veneering porcelain.
Keywords：zirconia ceramiclithiumdisilicate hot-pressed ceramicfeldspathic veneering porcelainwearmicromorphologybovine tooth enamel
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 516-520 )