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目的定性分析不同基底材料与饰面瓷之间化学结合的方式。方法本研究于2011年3—9月在大连市口腔医院和大连交通大学完成。以上颌侧切牙为模型,选用镍铬(Ni-Cr)合金、氧化锆、金钯(Au-Pd)合金、压铸瓷、钴铬(Co-Cr)合金、混合Au-Pd合金6种基底材料,按照厂家的操作要求在不同基底材料上烧结饰面瓷。然后用扫描电镜观察各基底材料与饰面瓷界面,并用能谱分析仪进行元素分析。结果 Ni-Cr合金、氧化锆、Au-Pd合金、Co-Cr合金、混合Au-Pd合金5种基底与饰面瓷之间均发生了程度不同的元素扩散,扩散范围约1～2μm。随着远离界面,扩散元素含量逐渐降低直至消失。压铸瓷基底在实验条件下未明显观察到饰面瓷与压铸瓷的结合界面。结论 Ni-Cr合金、氧化锆、Au-Pd合金、Co-Cr合金、混合Au-Pd合金及压铸瓷基底在和饰面瓷的烧结过程中均发生了化学结合。
Objective To qualitatively analyze the ways of chemical bonding between different base materials and veneer porcelain. Methods This study was performed in Dalian Stomatological Hospital and Dalian Jiaotong University from March to September in 2011. The maxillary lateral incisors were selected as the model and six kinds of base materials (Ni-Cr), zirconium oxide, Au-Pd alloy, die-casting porcelain, Co-Cr alloy and mixed Au- , In accordance with the operation of the manufacturer’s requirements in the sintering of porcelain on different substrate materials. Then, the interface between each base material and the veneer was observed with a scanning electron microscope, and the elemental analysis was conducted with an energy spectrum analyzer. Results The element diffusion of Ni-Cr alloy, zirconia, Au-Pd alloy, Co-Cr alloy and mixed Au-Pd alloy all differed to some extent. With the distance from the interface, the diffusion element content gradually decreased until it disappeared. Die-casting porcelain substrate in the experimental conditions did not significantly observed the porcelain and die-casting porcelain bonding interface. Conclusion Ni-Cr alloy, zirconia, Au-Pd alloy, Co-Cr alloy, mixed Au-Pd alloy and die-casting porcelain substrate all chemically bonded with the porcelain during the sintering process.