中国实用口腔科杂志 ›› 2026, Vol. 19 ›› Issue (5): 590-595.DOI: 10.19538/j.kq.2026.05.010

• 论著 • 上一篇    下一篇

二硅酸锂涂层表面微结构调控对氧化锆粘接强度的影响研究

童新文,李素卿,江    磊,陈    润,于    皓   

  1. 福建医科大学口腔医学院·附属口腔医院口腔修复科,福建省口腔组织缺损性疾病临床医学研究中心,福建省口腔疾病研究重点实验室,福建省口腔生物材料工程技术研究中心,福建省高校口腔医学重点实验室,福建医科大学口腔稳态医学研究院,福建医科大学口腔生物力学及美学研究中心,福建 福州 350002
  • 出版日期:2026-09-30 发布日期:2026-09-30
  • 通讯作者: 于皓
  • 基金资助:
    福建省教育厅中青年教师教育科研项目(科技类)(JAT220087)

  • Online:2026-09-30 Published:2026-09-30

摘要: 目的    探讨二硅酸锂涂层不同表面处理方式对氧化锆粘接性能的影响。方法    研究于2025年3—10月在福建省口腔疾病研究重点实验室进行。制备45个氧化锆试样(直径10 mm、厚1.5 mm),并将其随机分为3组(每组15个),根据粘接面处理方法不同分为A组(50 μm氧化铝喷砂处理)、B组(二硅酸锂涂层+ 5%氢氟酸酸蚀处理)和C组(二硅酸锂涂层后50 μm氧化铝喷砂+ 5%氢氟酸酸蚀处理)。采用接触角测量仪检测各组表面接触角,并通过原子力显微镜(atomic force microscope,AFM)、扫描电子显微镜(scanning electron microscope,SEM)对试样表面特征进行分析。制作粘接试件,使用万能材料试验机以1 mm/min的恒定加载速度施加平行于界面的剪切力直至试样破坏,测定剪切粘接强度(shear bond strength,SBS),并在体视显微镜下观察其失效模式。结果    接触角测量仪测量结果显示,A组的接触角为(69.24 ± 1.21)°,B组的接触角为(37.46 ± 0.46)°,C组的接触角为(27.26 ± 0.31)°。AFM分析结果显示,A组的算术平均粗糙度(Ra)为56.9 nm、均方根粗糙度(Rq)为78.1 nm,B组的Ra为91.3 nm、Rq为111.0 nm,C组的Ra为299.0 nm、Rq为374.0 nm。SEM观察结果显示,A组表面未见明显孔隙,B组表面出现针状晶体结构暴露并伴有细微的晶间间隙,C组表面出现深凹坑并广泛暴露出晶体结构。SBS测试结果显示,C组的SBS[(9.16 ± 1.24)MPa]显著高于A组[(4.47 ± 1.08)MPa]和B组[(5.59 ± 1.17)MPa],差异有统计学意义(q值分别为10.830、8.226,均P < 0.001);A组与B组比较,差异无统计学意义(q = 2.604,P = 0.175)。失效模式分析显示,A组全部表现为界面破坏,B组以界面破坏为主[70%(7/10)],C组以混合性破坏为主[90%(9/10)]。结论    二硅酸锂涂层联合喷砂和酸蚀处理可形成粗糙化的表面,显著提高氧化锆与树脂水门汀之间的粘接强度,并改善粘接界面的失效模式。

关键词: 二硅酸锂涂层, 喷砂, 表面改性, 粘接强度, 氧化锆

Abstract: Objective    To investigate the effects of different surface treatments for lithium disilicate coatings on the bonding performance of zirconia. Methods    This study was conducted at the Fujian Key Laboratory of Oral Diseases from March to October 2025. Totally forty-five zirconia specimens(10 mm in diameter and 1.5 mm in thickness)were prepared and randomly divided into three groups(15 in each group)according to the bonding surface treatment method:Group A,treated with 50 μm aluminum oxide air abrasion;Group B,treated with a lithium disilicate coating followed by 5% hydrofluoric acid(HF)etching;Group C,treated with a lithium disilicate coating followed by 50 μm aluminum oxide air abrasion and 5% HF etching. The surface contact angles of the specimens in each group were measured using a contact angle goniometer,and the surface characteristics were analyzed by atomic force microscopy(AFM)and scanning electron microscopy(SEM). Bonded specimens were fabricated,and shear forces parallel to the bonding interface were applied using a universal testing machine at a constant crosshead speed of 1 mm/min until the specimens were broken. The shear bond strength(SBS)was measured,and the failure modes were examined using a stereomicroscope. Results    The contact angle measurements showed that the contact angles were(69.24 ± 1.21)° in Group A,(37.46 ± 0.46)°in Group B,and(27.26 ± 0.31)° in Group C. AFM analysis showed that the arithmetic mean roughness(Ra)and root mean square roughness(Rq)were 56.9 nm and 78.1 nm in Group A,91.3 nm and 111.0 nm in Group B,and 299.0 nm and 374.0 nm in Group C. SEM observation revealed no obvious pores on the surface of Group A,whereas exposed needle-like crystalline structures accompanied by fine intercrystalline gaps were observed in Group B. In Group C,deep pits and extensive exposure of crystalline structures were observed. The SBS of Group C[(9.16 ± 1.24)MPa]was significantly higher than that of Group A[(4.47 ± 1.08)MPa] and Group B[(5.59 ± 1.17)MPa],with statistically significant differences(q = 10.830 and 8.226,respectively;both P < 0.001). There was no statistically significant difference between Group A and Group B(q = 2.604,P = 0.175).Failure mode analysis showed that all specimens in Group A exhibited adhesive failure,whereas Group B was characterized predominantly by adhesive failure[70%(7/10)],and Group C was characterized predominantly by mixed failure[90%(9/10)]. Conclusion    A lithium disilicate coating combined with air abrasion and acid etching treatment can produce a roughened zirconia surface,significantly enhance the bond strength between zirconia and resin cement,and improve the failure mode of the bonding interface.

Key words: lithium disilicate coating, sand-blasting, surface modification, bond strength, zirconia

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