Influence of repeated sintering on the color of two brands of porcelain-fused-to-titanium / 华西口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the influence of repeated sintering on the color of two porcelain-fused-to-titanium, and the differences between the two porcelains.</p><p><b>METHODS</b>Thirty samples were prepared and sintered for 9 times. The color of samples were measured following sintering 1, 3, 5, 7, 9 times by ShadeEye NCC colorimeter according to two brands of porcelains with CIE1976L*a*b* color system, and calculated relevant chrome, chromatism and hue, and statistical analysis.</p><p><b>RESULTS</b>When two brands of porcelains were sintered 5 times, the color parameters had no significant change and sintered continuely, the color parameters of L* and a* had obvious changes, but can't be observed by eyes.</p><p><b>CONCLUSION</b>The color parameters of titanium-porcelains have no significant change after repeated sintering.</p>