[Color stability of porcelain-fused-to-titanium restorations after repeated firings].
OBJECTIVE
To study the effect of repeated firings on color of porcelain-fused-to-titanium restorations.


METHODS
Twenty standard porcelain-fused-to-titanium specimens were made with Dentsply DETREY TiBond C3 and Dentaurum rematitan Til. Then they were fired 1, 2, 4, 7, and 10 times. Color measurement was done after each firing.


RESULTS
Most of the color parameters had no significant difference after firing except for a* and Hab. All the color difference among groups were smaller than 1.0 (deltaE < 1.0).


CONCLUSIONS
Repeated firings will not affect the color stability of porcelain-fused-to-titanium restorations.
Wu
Xiao-min
XM
Department of Dentistry, PUMC Hospital, CAMS and PUMC, Beijing 100730, China. wuxm1966@yahoo.com
Zhou
Zheng
Z
D003116:Color / Q000592:standards; D003776:Dental Porcelain; D003779:Denture Design; D006801:Humans; D016876:Metal Ceramic Alloys; D017797:Prosthesis Coloring / Q000379:methods*; D014025:Titanium
D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; D014025:Titanium