Self-glazed zirconia reducing the wear to tooth enamel

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• 作者：Yihong Liu^a ; ; Yong Wang^b ; Dianzheng Wang^c ; Jing Ma^c ; Leifeng Liu^d ; Zhijian Shen^d ; ^{shen@mmk.su.se" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Ceramics ; Zirconia ; Dental restorations ; Wear ; Surface ; Enamel
• 刊名：Journal of the European Ceramic Society
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：36
• 期：12
• 页码：2889-2894
• 全文大小：2075 K

文摘

The wear behaviors of a newly developed grade of self-glazed zirconia against the enamel of freshly extracted teeth were investigated under simulated oral stresses and chemical environment. It was revealed that an inherently formed enamel-like surface on self-glazed zirconia that is very smooth on micrometer scale yet with nanoscale roughness has almost the same frictional coefficient against tooth enamel as the well-polished zirconia surface. The wear scars observed on the worn surface of enamel against self-glazed zirconia and well-polished zirconia surface revealed that in both cases fatigue wear is the dominating wear mechanism. It was concluded that the friction and wear performances of both the well-polished and self-glazed zirconia ceramics against natural enamel were very similar, which bears a very strong implication for the clinical safe use of the full contour zirconia restorations, yet the self-glazed zirconia provides sufficiently improved aesthetic appearance that ensures its potential for direct clinical uses.