Chromatic behavior of porcelain fired on titanium.
OBJECTIVE
To investigate the chromatic changes of 3 porcelains after firing on titanium.


METHODS
Thirty-six veneer crowns were obtained by firing 3 different porcelains to titanium: Ti22 (Noritake), Triceram (Esprident), and Vitatitankeramik (Vita). A single shade was used for each porcelain. Besides the titanium-porcelain specimens, 3 titanium-free controls (one for each porcelain) were obtained. A spectrophotometer was used to measure the color of porcelain facings of the veneer crowns and the porcelain controls. Once the chromatic digital values were recorded, the color differences between the titanium-porcelain samples and the corresponding porcelain controls were computed. The results were statistically analyzed.


RESULTS
The least chromatic difference was observed for Ti22 porcelain, and the greatest difference for Triceram porcelain. Regarding the direction of the chromatic alteration after firing on titanium, very significant differences were found between the porcelains.


CONCLUSIONS
Perceivable differences were found between the shade of the porcelain fired to titanium and that of the same porcelain fired alone. No significant differences were found between the 3 porcelains regarding the total chromatic modification.
Lakatos
Sorin
S
Department of Prostheses Technology and Dental Materials, Timişodra, Romania. sorin26@rdslink.ro
Lakatos
Carmen
C
Rominu
Mihai
M
Floriţa
Zeno
Z
D003442:Crowns; D003735:Dental Casting Technique; D003776:Dental Porcelain; D016876:Metal Ceramic Alloys; D017797:Prosthesis Coloring; D013053:Spectrophotometry; D014025:Titanium
D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; D014025:Titanium