In the past, porcelain crowns were always built upon a metal core, and if the gum tissue receded they would show an unsightly black line. Recent breakthroughs in adhesives, combined with the development of stronger porcelain materials, allow us to make crowns or partial crowns entirely out of porcelain.
The translucency of all-porcelain crowns mimics the look of a natural tooth. Without metal, the problem of the dark line is eliminated. All-porcelain crowns are placed just above the gum line, which is much healthier for you and your gum tissue.