口腔医学研究

口腔医学研究 ›› 2026, Vol. 42 ›› Issue (8): 674-680.DOI: 10.13701/j.cnki.kqyxyj.2026.08.007

• 口腔修复学研究 • 上一篇    下一篇

氢氟酸蚀刻时间对二硅酸锂玻璃陶瓷修复体微观结构和剪切强度的影响

姜燕1,2, 陈炜翔3, 黄婷婷3, 唐思宇3, 张怡2,4, 张志升2,4, 左起亮2,5*   

  1. 1.厦门医学院附属口腔医院种植三科 福建 厦门 361008;
    2.厦门市口腔疾病诊疗重点实验室 福建 厦门 361008;
    3.厦门医学院口腔医学院 福建 厦门 361023;
    4.厦门医学院附属口腔医院修复二科 福建 厦门 361008;
    5.厦门医学院附属口腔医院修复一科 福建 厦门 361008
  • 收稿日期:2025-10-23 出版日期:2026-08-28 发布日期:2026-08-17
  • 通讯作者: *左起亮,E-mail:zuoqiliang1985@sina.com
  • 作者简介:姜燕(1988~ ),女,福建龙岩人,硕士,副主任医师,研究方向:口腔种植学及口腔材料学研究。
  • 基金资助:
    厦门市医疗卫生指导性项目(编号:3502Z20214ZD1274)

Influence of Hydrofluoric Acid Etching Duration on Microstructure and Shear Bond Strength of Lithium Disilicate Glass-ceramic Restorations

JIANG Yan1,2, CHEN Weixiang3, HUANG Tingting3, TANG Siyu3, ZHANG Yi2,4, ZHANG Zhisheng2,4, ZUO Qiliang2,5*   

  1. 1. Department of Implantology Ⅲ, Stomatological Hospital of Xiamen Medical College, Xiamen 361008, China;
    2. Xiamen Key Laboratory of Stomatological Disease Diagnosis and Treatment, Xiamen 361008, China;
    3. College of Stomatology, Xiamen Medical College, Xiamen 361023, China;
    4. Department of Prosthodontics Ⅱ, Stomatological Hospital of Xiamen Medical College, Xiamen 361008, China;
    5. Department of Prosthodontics Ⅰ, Stomatological Hospital of Xiamen Medical College, Xiamen 361008, China
  • Received:2025-10-23 Online:2026-08-28 Published:2026-08-17

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摘要： 目的: 探讨氢氟酸(hydrofluoric acid,HF)酸蚀时间对二硅酸锂玻璃陶瓷(lithium disilicate glass-ceramic,LDGC)在牙本质表面粘接强度的影响机制,为全瓷修复体粘接过程中的修复体处理流程改良提供参考。方法: 制备LDGC试件36片和陶瓷柱试件30个,并制备新鲜牛牙本质样本。采用接触角测量仪、白光干涉粗糙度仪和扫描电子显微镜(scanning electron microscope,SEM)分别对无酸蚀组(0 s)以及经5 s、10 s、20 s、40 s和60 s HF酸蚀处理的陶瓷试件的接触角、表面粗糙度和表面微观形貌进行检测。将陶瓷试件粘接于牛牙本质表面,运用万能试验机进行剪切粘接强度测试,体式显微镜下观察其断裂界面。结果: 在0~60 s内,随着酸蚀时间延长,接触角依次减小,HF 40 s组的接触角最小,为(24.0±0.2)°(P<0.05),粗糙度最大,为(205.91±0.52) nm(P<0.05)。SEM结果显示酸蚀时间延长陶瓷表面玻璃基质减少,酸蚀时间长于40 s后,陶瓷表面出现大孔径孔洞;HF 40 s组的剪切粘接强度最大,为(11.06±0.74) MPa,但附有牙本质的剥脱;HF 20 s组则为树脂粘接剂与牙本质的界面粘接失效。结论: 在60 s内,HF酸蚀时间的延长可增大LDGC的粗糙度、表面润湿性并获得稳定的粘接界面形貌。5%HF酸蚀处理LDGC界面20~40 s即可达到良好的粘结效果。

关键词: 氢氟酸, 酸蚀时间, 粘接界面, 二硅酸锂玻璃陶瓷, 剪切粘接强度

Abstract: Objective: To investigate the mechanism by which hydrofluoric acid (HF) etching time affects the bond strength between lithium disilicate glass-ceramic (LDGC) and dentin surfaces, and to provide a reference for optimizing the bonding process of all-ceramic restorations. Methods: Thirty-six LDGC sheets and thirty ceramic cylinder as well as fresh bovine dentin were prepared. Ceramic specimens were either left untreated (0 s) or etched with HF for 5 s, 10 s, 20 s, 40 s, or 60 s. The contact angle (CA), surface roughness, and surface micromorphology of the specimens were measured using a contact angle meter, white light interferometry, and scanning electron microscopy (SEM), respectively. The LDGC specimens were bonded to bovine dentin, and the shear bond strength (SBS) was tested using a universal testing machine. Fracture interfaces were observed under a stereo microscope. Results: During 60 s of etching time, the CA decreased with increasing etching time. The 40 s HF group showed the lowest CA, (24.0±0.2)°, and the highest surface roughness, (205.91±0.52) nm (P < 0.05). SEM revealed that glass matrix of ceramics gradually diminished with longer etching, and large pores appeared after etching for more than 40 s. The 40 s HF group exhibited the highest SBS, (11.06±0.74) MPa, although it was associated with dentin stripping. The 20 s HF group showed interfacial bond failure between the resin adhesive and dentin. Conclusion: Within 60 s, increasing HF etching time improves the surface roughness and wettability of LDGC, contributing to a more stable bonding interface. Etching the LDGC surface with 5% HF for 20 to 40 s can achieve optimal bonding performance.

Key words: hydrofluoric acid, etching time, bonding interface, lithium disilicate glass-ceramics, shear bond strength