中国组织工程研究

中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (29): 5371-5374.doi: 10.3969/j.issn. 2095-4344.2012.29. 011

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

着色氧化锆基底材料与其饰面瓷的结合性能

蒋 序   

  1. 济南市口腔医院，山东省济南市 250001
  • 收稿日期:2012-02-28 修回日期:2012-02-28 出版日期:2012-07-15 发布日期:2012-07-15
  • 作者简介:蒋序，女，1963年生，山东省济南市人，回族，2007年山东大学毕业，主治医师，主要从事口腔修复材料的研究。 342454619@ qq.com

Bond strength of colored zirconia core materials with veneering cermaics

Jiang Xu   

  1. Jinan Stomatology Hospital, Jinan 250001, Shandong Province, China
  • Received:2012-02-28 Revised:2012-02-28 Online:2012-07-15 Published:2012-07-15
  • About author:Jiang Xu, Attending physician, Jinan Stomatology Hospital, Jinan 250001, Shandong Province, China 342454619@qq.com

PDF

600

被引次数

3

摘要：

背景：基底冠和饰面瓷的结合破坏是全瓷修复体失败的最常见原因。有研究表明着色颗粒的添加会降低氧化锆基底材料与饰面瓷的结合强度，从而影响氧化锆修复体的成功率。
目的：测试4种着色氧化锆基底材料与其相应饰面瓷的抗剪切强度，并与未着色的氧化锆基底材料相对比，探讨着色颗粒的添加对氧化锆基底材料与饰面瓷结合强度的影响。
方法：将白色和着色的Lava Frame、IPS E.max Zircad、Vita In-Ceram Zirconia、Cercon Smart瓷块及相应的饰面瓷切削出直径7 mm，厚度3 mm的盘状试件(n=5)，按照各厂商要求进行喷砂、超声清洗备用。在基底材料的中央，以手工堆瓷法分别饰以各自厂家推荐的饰面瓷，用自制的模具控制饰瓷的体积(直径5 mm，厚度3 mm)，并在基底上烧结。
结果与结论：4种着色氧化锆基底试件的抗剪切强度与未着色氧化锆基底试件差异无显著性意义(P > 0.05)，提示着色颗粒的添加对氧化锆与饰面瓷结合强度无影响。氧化锆复合体发生结合界面破坏的比例以及抗剪切强度值由高至低是Lava、IPS E.max、Vita In-Ceram Zirconia、Cercon。激光共聚焦扫描显微镜观察试件断裂面的破坏模式为饰面瓷内聚破坏和结合界面附着破坏，主要破坏模式为饰面瓷内聚破坏，均未发生基底破坏。

关键词: 氧化锆, 着色, 基底, 饰面瓷, 抗剪切强度, 生物材料

Abstract:

BACKGROUND: Bond failure between the core and veneering ceramics is the most common cause of failure in all-ceramic restorations. Several studies have shown that the accession of colored granules can decrease the bond strength of zirconia cores materials with veneering ceramics, thereby influencing the success ratio of zirconia restorations.
OBJECTIVE: To test shear bond strength of four kinds of colored zirconia core materials and veneering ceramics, as well as to investigate the effect of colored granules on the bond strength of zirconia cores materials with veneering ceramics compared with white zirconia cores materials.
METHODS: White and colored Lava Frame, IPS E.max Zircad, Vita In-Ceram Zirconia, Cercon Smart zirconia blanks and their corresponding veneering ceramics were produced into disks with a diameter of 7 mm and a thickness of 3 mm following each manufacturers’ recommendations, such as spray sand and ultrasonic cleaning. At the center of core materials, the veneering ceramics each manufacturer recommended were veneered with handmade porcelain method. After that, the volume of veneering ceramics (with diameter of 5 mm, and thickness of 3 mm) was controlled by homemade stencils and sintered.
RESULTS AND CONCLUSION: The shear bond strength between four kinds of colored zirconia based combinations and white zirconia based combinations had no significant difference (P > 0.05).These showed that the accession of colored granules had no influence on the bond strength between zirconia and veneering ceramics. The proportions of failures at the zironia-ceramic combinations interface and shear bond strength values from high to low were Lava, IPS E.max, Vita In-Ceram Zirconia and Cercon, respectively. Focal laser scanning microscope showed that the failure mode of combinations at fractured surface was cohesive failure within the veneering ceramics and interface adhesion failure. Besides, the major failure was cohesive failure within the veneering ceramics rather than core failure.

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