23 September 2014 Illuminating light-dependent color shifts in core and veneer layers of dental all-ceramics
Author Affiliations +
The color of an object is perceived differently depending on the ambient light conditions. Since dental all-ceramic restorations are fabricated by building up several layers to reproduce the tooth shade, the optical properties of each layer should be optimized for successful shade reproduction. This study aimed to determine the separate contributions of the color shifts in each of the core and veneer layers of all-ceramics by switching the illuminating lights on the color shifts of layered ceramics. Specimens of seven kinds of core ceramics and the corresponding veneer ceramics for each core were fabricated with a layered thickness of 1.5 mm. A sintering ceramic was used as a reference core material. The Commission Internationale de l’Eclairage (CIE) color coordinates of core, veneer, and layered specimens were measured with a spectroradiometer under the CIE illuminant D65 (daylight), A (incandescent lamp), and F9 (fluorescent lamp) simulating lights. Color shifts of the layered specimens were primarily determined by the CIE a* shifts (D65 to A switch) or by the CIE b* shifts (D65 to F9 switch) of the veneer layer. The color coordinates shifts in the constituent layers differentially influenced those of the layered specimens by the kind of switched lights. Therefore, the optical properties of the constituent layers of all-ceramics should be controlled to reflect these findings.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Yong-Keun Lee, Yong-Keun Lee, Hyun-Suk Cha, Hyun-Suk Cha, Bin Yu, Bin Yu, } "Illuminating light-dependent color shifts in core and veneer layers of dental all-ceramics," Journal of Biomedical Optics 19(9), 095002 (23 September 2014). https://doi.org/10.1117/1.JBO.19.9.095002 . Submission:


Optimal control of real ambient LED lighting powering
Proceedings of SPIE (February 19 2015)
Luminaire development for hybrid solar lighting applications
Proceedings of SPIE (January 07 2004)
Quadrichromatic white solid state lamp with digital feedback
Proceedings of SPIE (January 25 2004)
Technology and design
Proceedings of SPIE (February 15 2005)
Lens design of street lamp for integrated high-power LED
Proceedings of SPIE (November 05 2010)
Street-lighting with LEDs
Proceedings of SPIE (September 23 2008)

Back to Top