不同材料桩核对IPS-Empress2全瓷冠颜色的影响
Influence of differ ent types of posts and cor es on color of IPS- Empr ess 2 crown
作者：李东方 杨静远 杨醒眉 杨柳 徐强 管红雨 万乾炳
Author：LI Dong- fang1，2, YANG Jing- yuan1, YANG Xing- mei1, YANG Liu1, XU Qiang1, GUAN Hong- yu1, WAN Qian- bing3
收稿日期：2007-10-25 年卷（期）页码：2007,25(05):450-
期刊名称：华西口腔医学杂志
Journal Name：West China Journal of Stomatology
关键字：口腔医学,教材建设,创新人才培养,氧化锆,桩核,颜色,
Key words：stomatology,textbookconstruction,innovativetalentcultivation,zirconium oxide,post and core,color,
基金项目：
国家教委回国留学人员科研启动基金资助项目[教外司留（2002）247]
中文摘要
目的研究不同材料桩核对IPS- Empress 2全瓷冠不同部位颜色的影响规律。方法制作全瓷桩核、氧化锆桩树脂核、金合金桩核、镀金镍铬合金桩核和镍铬合金桩核各3个，用PR- 650光谱扫描色度仪测量不同桩核背景下IPS- Empress 2全瓷冠唇面切1/3、中1/3和颈1/3的L*、a*、b*颜色参数，研究不同材料桩核对全瓷冠颜色的影响。结果全瓷桩核和镀金镍铬合金桩核背景的L*、a*、b*值均高于其他桩核背景，氧化锆桩树脂核背景的L*、a*值较高，b*值较低，金合金桩核背景的L*、a*、b*值较低，镍铬合金背景的L*、a*、b*值最低。结论应用IPS- Empress2全瓷冠修复根管治疗后的上前牙时，推荐使用全瓷桩核和氧化锆桩树脂核，也可以考虑使用镀金镍铬合金桩核或金合金桩核，不推荐使用镍铬合金桩核。
英文摘要
Objective To evaluate the influence of different types of posts and cores on the final color of the IPS- Emperss 2 crown. Methods Five types of posts and cores（Cerapost with Empress cosmo, Cerapost with composite resin, gilded Ni- Cr alloy, gold alloy and Ni- Cr alloy）were made. The shifts in color of three points of IPS- Empress 2 crown surface （cervical, middle and incisal）with different posts and cores was measured with a spectroradiometer （PR- 650）. Results The L* a* b* values of zirconium oxide and gilded Ni- Cr alloy posts and cores with ceramic crown were the highest. The L* a* values of zirconium oxide posts composite cores were higher while the b* values were lower. The L* a* b* values of Ni - Cr alloy were lower than that of gold alloy and were the lowest. Conclusion In combination with IPS- Empress 2 crown, zirconium oxide posts are suitable for routine use in the anterior dentition, and gilded Ni- Cr alloy and gold alloy posts and cores can be recommended for clinical practice. Ni- Cr alloy posts and cores can not be recommended for clinical practice.
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