华西口腔医学杂志

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不同处理方法对瓷表面微观形貌的影响

台银霞1  朱宪春1  闫森1  刘畅2  张娴1  史学明1   

  1. 1.吉林大学口腔医院 正畸科, 长春 130021; 2.长春市口腔医院 正畸科, 长春 130000
  • 出版日期:2013-02-01 发布日期:2013-02-01
  • 通讯作者: 朱宪春,Tel:0431-88796023
  • 作者简介: 台银霞(1984—),女,吉林人,住院医师,硕士
  • 基金资助:

    吉林省卫生厅科技计划基金资助项目(2009Z006)

Influence of different surface treatments on porcelain surface topography

 Tai Yinxia1, Zhu Xianchun1, Yan Sen1, Liu Chang2, Zhang Xian1, Shi Xueming1   

  1. 1. Dept. of Orthodontics, Stomatological Hospital of Jilin University, Changchun 130021, China; 2. Dept. of Orthodontics, Changchun Stomatological Hospital, Changchun 130000, China
  • Online:2013-02-01 Published:2013-02-01

摘要:

目的  研究不同瓷表面处理方法对瓷表面微观形貌的影响。方法  制备6组金属烤瓷试样,分别在瓷表面进行如下处理:A组不作处理(对照组),B组采用质量分数9.6%氢氟酸(HF)酸蚀,C组用金刚砂车针与HF联合处理, D、E、F组分别用0.75、1.05、1.45 W的Nd: YAG激光与HF联合处理。处理后的试件用扫描电子显微镜(SEM)观察, 观察其表面形貌的变化。结果  经不同处理后瓷表面的微观形貌不同;E组经1.05 W的Nd: YAG激光与HF联合处理,瓷表面可见网格形裂纹,裂纹的侧壁及底部布满类圆形小孔,裂纹内壁圆钝,并且观察到直径约为20 μm的圆形弹坑样结构,其内壁附有直径为1~5 μm不等的圆形隐窝,形成倒凹结构。结论 能量参数为1.05 W的Nd: YAG激光与9.6%HF联合处理瓷面后可使瓷面均匀粗化,是一种有效的瓷表面处理方法。

关键词: 表面处理, 扫描电子显微镜, 氢氟酸, Nd: YAG激光

Abstract:

Objective To evaluate the influence of different surface treatments on porcelain surface topography. Methods  Metal ceramic prostheses in 6 groups were treated according to the different surface treatment methods, and the surface topography was observed through scanning electron microscope(SEM). Group A was the control one (untreated), group B was etched by 9.6% hydrofluoric acid(HF), group C was deglazed by grinding and then etched by 9.6% HF, group D was treated with Nd: YAG laser irradiation(0.75 W) and HF etching, group E was treated with Nd: YAG laser irradiation(1.05 W) and HF etching, and group F was treated with laser irradiation(1.45 W) and HF etching. Results  Surface topography was different in different groups. A lot of inerratic cracks with the shapes of rhombuses and grid, and crater with a shape of circle were observed on the ceramic surface after treatment with energy
parameters of 1.05 W Nd: YAG laser irradiation and 9.6% HF etching(group E). Surface topography showed a lot of concaves on the inner wall of the cracks, and the concaves with diameter of 1-5 μm could be observed on the inner wall of the holes, which had a diameter of 20 μm under SEM. Conclusion The use of Nd: YAG laser irradiation with the energy parameters of 1.05 W and the HF with a concentration of 9.6% can evenly coarsen the porcelain surface, that is an effective surface treatment method.

Key words:  surface treatment, scanning electron microscope, hydrofluoric acid, Nd: YAG laser