Abdulelah M Binmahfooz, Ghadeer I Basunbul, Aws S ArRejaie
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引用次数: 0
摘要
背景:与传统陶瓷相比，Y-TZP陶瓷化学成分的主要差异促使研究人员开发出与氧化锆表面持久结合的替代解决方案。目的:研究辉光放电处理对水泥与氧化锆粘结的影响。方法:以zz - 3ysb - e (Tosoh-Zirconia)和zz - tzp粉为原料，采用自动混合法制备氧化锆环和棒，考察其辉光放电和热循环性能。使用定向聚四氟乙烯模具将每个棒集中到氧化锆环中，并在胶结过程中辅助作为胶结夹具。结果:RelyX Ultimate主要观察到内聚失败(2/3或更多的luting剂留在氧化锆表面)，而Ketac-Cem主要观察到粘附失败(少于1/3的luting剂留在氧化锆表面)。在Rely X Unicem 2、Multilink Auto-mix和Ceramir三种试样中均观察到混合破坏。结论:辉光放电表面处理工艺对氧化锆的结合强度有重要影响。
Evaluation of the Effect of Glow Discharge Plasma Surface Treatment on Bonding Cements to Zirconia.
Background: The major difference in the chemical composition of Y-TZP ceramics, as compared with conventional porcelain, led researchers to develop alternative solutions for achieving durable and long term bonding with the zirconia surface.
Objective: The study aims to evaluate the effects of glow discharge treatment on the bonding between cement and zirconia.
Methods: The zirconia rings and rods were prepared with the Zirconia Y-TZP powder and TZ-3YSB-E (Tosoh-Zirconia) through auto-mix to investigate the glow discharge and thermo-cycling. An orientation Teflon mold was used to centralize each rod into the zirconia ring, and aided as a cementation jig during the cementation procedure.
Results: Cohesive failure (2/3 or more of luting agent remained on the zirconia surface) has been majorly observed with RelyX Ultimate, while adhesion failure (less than 1/3 of the luting agent remained on the zirconia surface) has been primarily observed in Ketac-Cem. Mixed failure was observed among the three specimen including Rely X Unicem 2, Multilink Auto-mix and Ceramir.
Conclusion: The glow discharge surface treatment procedure had a major impact on bond strength to zirconia.
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