Affection of Post-Core Materials on the Resultant Color of Lithium Disilicate Ceramic Restorations

Abstract:

Abstract. The purpose of the study was to evaluate the affection of post-core materials on the resultant color of lithium disilicate ceramic restorations. Twenty disk-shaped core-veneer specimens were prepared with IPS e.max Press and IPS e.max Ceram. Twenty-five substructure specimens were also prepared. Color measurements were performed for all specimens with each substructure by a calibrated spectrophotometer. Lab chromatic values were obtained. The chromatic aberration (△E) compared with dentine substructure was 1.33 for ziconia based combinations , 1.40 for resin based combinations, 4.37 for cobalt chromium alloy based combinations and 3.05 for gold metal alloy based combinations. The zirconia and resin post-core materials are recommended to form substructures for the lithium disilicate ceramic restorations. Cobalt chromium alloy and Gold metal alloy post-core materials are not recommended.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1761-1764
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1761
• Online since: June 2012
• Authors: Ting Sun, Long Quan Shao, Yan Liang Wang, Yuan Fu Yi, Bin Deng, Ning Wen
• Keywords: Core, Lithium Disilicate Ceramic, Post

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