Li, Dong-fang, Yang, Jing-yuan, Yang, Xing-mei, Yang, Liu, Xu, Qiang, Guan, Hong-yu, and Wan, Qian-bing (2007) Influence of different types of posts and cores on color of IPS-Empress 2 crown. West China Journal of Stomatology, 25 (5). 1000-1182(2007) 05-0450-04. pp. 450-453.

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Abstract

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.

Item ID:	18196
Item Type:	Article (Non-Refereed Research)
ISSN:	1000-1182
Keywords:	zinc oxide, core, code, color, post and core
Additional Information:	Text in Chinese. Original Title: 不同材料桩核对IPS-Empress 2 全瓷冠颜色的影响。 Original abstract/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- Empress 2 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。
Date Deposited:	19 Oct 2011 06:31
FoR Codes:	11 MEDICAL AND HEALTH SCIENCES > 1105 Dentistry > 110501 Dental Materials and Equipment @ 100%
SEO Codes:	92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920402 Dental Health @ 100%
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