不同时间低温等离子体处理对氧化锆粘接强度影响  

The effects of nonthermal plasma treatment of different duration on the bonding strength of zirconia

作　　者：张研楠 刘敏[1] 孟凡豪 高瑞 陈剑锋[1] ZHANG Yannan;LIU Min;MENG Fanhao;GAO Rui;CHEN Jianfeng(Department of Stomatology,The First Affiliated Hospital of Dalian Medical University,Liaoning Province,116011,China)

机构地区：[1]大连医科大学附属第一医院口腔科,116000

出　　处：《实用口腔医学杂志》2025年第2期222-226,共5页Journal of Practical Stomatology

基　　金：辽宁省教育厅科学研究经费项目(编号:LZ2020034);辽宁省自然科学基金项目(编号:2022-MS-315);大连市科技创新基金计划(编号:2022JJ12GX040);大医附-大连化物所医工联合创新基金项目(编号:DMU-1&DICPUN202208)。

摘　　要：目的:探讨不同时间的低温等离子体处理对氧化锆粘接强度的影响。方法:将氧化锆制作成两种规格的试件,Ⅰ类试件50枚(10 mm×10 mm×2 mm),Ⅱ类试件50枚(3 mm×3 mm×2 mm),随机分为5组(n=10),A组:空白组;B组:喷砂组;C-E组:氩气低温等离子体分别处理60、90、120 s。Ⅰ类试件用于检测氧化锆的表面形貌、粗糙度、表面元素及接触角变化。Ⅱ类试件与离体牙粘接后进行剪切强度测试和断裂模式观察。结果:低温等离子体处理不会改变氧化锆的表面形貌及粗糙度;经不同时间的氩气低温等离子体处理后氧化锆的表面元素及接触角均发生明显变化,其中D组表面元素及接触角变化幅度最大,并获得最大剪切强度值(25.74±1.25)MPa。结论:90 s氩气低温等离子体处理氧化锆效果最佳。Objective:To study the surface characterization and bonding strength of zirconia ceramic following nonthermal argon plasma(NTAP)treatment for different times.Methods:Zirconia ceramics were cut into 2 sizes of specimens(Ⅰ:10 mm×10 mm×2 mm,Ⅱ:3 mm×3 mm×2 mm),which were respectively subdivided into 5 groups:blank control group(A),sandblasting group(B)and NTAP treatment for 60,90 and 120 s groups(C,D and E respectively).The changes in surface morphology,roughness,C and O elements and contact angle of the sample surfaces were tested with Type I specimens.TypeⅡspecimens were applied to the uniform surface treatments and were cemented to isolated teeth using the RelyX U200 cement,the samples were submitted to a shear bond strength(SBS)test.Results:SEM and AFM show that NTAP treatment does not alter the surface morphology and roughness of zirconia ceramics.C element decreased and O element increased,and the contact angle became smaller after NTAP treatment.Among the 5 groups,group D showed the most extensive changes.And the result of SBS was as follows of NTAP treatment time:0 s<60 s<90 s=120 s(among 0,60 and 90 s groups,P<0.05).Conclusion:NTAP treatment can improve the bond strength of zirconia ceramic by increasing its surface energy and wettability,and NTAP treatment for 90 s may be a suitable surface treatment method for zirconia ceramics.

关 键 词：氧化锆 低温等离子体 剪切粘接强度 

分 类 号：R783.1[医药卫生—口腔医学]