临床口腔医学杂志2018，Vol.34Issue(3)：134-137,4.DOI:10.3969/j.issn.1003-1634.2018.03.002
两种非金属材料对颌牙釉质磨损性能的体外研究
Study of wear of the antagonistic enamel opposed to two metal-free materials in vitro
何姗丹 1许力强 1宋国俊 1郑雨燕1
作者信息
- 1. 暨南大学附属第二临床医院深圳市人民医院口腔中心 广东 深圳 518020
- 折叠
摘要
Abstract
Objective:The purpose of this study was to investigate and compare the wear of the antagonistic enamel when the inlays fabricated with ceramage and IPS e.max Press.Methods:Twenty class I cavities were prepared in approximal flattened extracted human maxillary first molars,and divided randomly into two groups and then restored with Ceramage and IPS e.max Press inlays respectively.Inlays were prepared and cemented with Varolink N.Normal enamel outside the inlay was defined as the controlled group.Non-wear extracted maxillary third molars were used as antagonistic enamel cusps after standardized prepared.After the self-made wear-testing device concluded 200,000 cycles under a load of 20 N,the wear depth of antagonistic enamel cusps compared with normal enamel was assessed by Kavo PREPassistant.Results:The depths of wear in Ceramage group antagonistic enamel wear was(189.10 ± 22.16)μm,while normal enamel was(206.60 ±49.17)μm.In IPS e.max Press group,the wear of the antagonistic enamel wear was(438.70 ± 56.47)μm,while normal enamel was(217.00 ± 25.10)μm.Considering the wear of the antagonistic enamel,in Ceramage group the antagonistic en-amel had the similar wear with normal enamel(P>0.05),while in IPS e.max Press group it showed much more wear than normal enamel(P<0.05).Conclusion:Ceramage shows lower wear of the antagonistic enamel,while IPS e.max Press may lead to over abrasive of the antagonistic enamel.关键词
牙修复磨损/牙瓷料/瓷聚体/E.max Press/对颌牙釉质磨损Key words
Dental restoration wear/Dental porcelain/Ceromer/E.max Press/Antagonistic enamel wear分类
医药卫生引用本文复制引用
何姗丹,许力强,宋国俊,郑雨燕..两种非金属材料对颌牙釉质磨损性能的体外研究[J].临床口腔医学杂志,2018,34(3):134-137,4.
