Influence of different types of posts and cores on color of IPS-Empress 2 crown.
- Author:
Dong-fang LI
1
;
Jing-yuan YANG
;
Xing-mei YANG
;
Liu YANG
;
Qiang XU
;
Hong-yu GUAN
;
Qian-bing WAN
Author Information
- Publication Type:Journal Article
- MeSH: Color; Composite Resins; Crowns; Dental Porcelain; Humans; Lithium Compounds; Post and Core Technique; Zirconium
- From: West China Journal of Stomatology 2007;25(5):450-453
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the influence of different types of posts and cores on the final color of the IPS-Emperss 2 crown.
METHODSFive 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).
RESULTSThe 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.
CONCLUSIONIn 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.
