GC America has introduced GC Initial Zr-FS, a new feldspar-based zirconium veneering ceramic.
For more translucency and transparency in all-ceramic work, GC America has expanded its GC Initial ceramic range with a new zirconium veneering ceramic.
GC Initial Zr-FS contains a high level of feldspar. With its optimized crystalline structure and lower glass content, the ceramic provides light reflection and dynamics comparable to natural teeth. At the same time, it is matched to the CTE of high-strength zirconium frameworks.
The new system, which is compatible with GC Initial Zr materials, follows GC's ceramic concept, "One build-up technique--one color system." This is to ensure more clarity and cost-effectiveness in the laboratory.
With GC Initial Zr-FS, the dental care company has added another esthetic and functional highlight to its all-ceramic range--the ultra-pure feldspars in the new veneering ceramic make it possible to achieve opalescent light refraction and natural translucency. At the same time, the feldspars enhance the stability and durability of the zirconium material.
High light conductivity and perfect fit on copings
As the coefficient of thermal expansion is matched to that of zirconium (CTE: 9.4), the veneer ceramic is suited to frameworks fabricated by CAM and CAD/CAM techniques and can safely be processed even without prolonged cooling.
This not only saves time, but also protects work from stress cracks and fracturing. In addition, the firing temperature of 810 degrees Celsius in the first dentine firing offers optimal bonding strength and an even crystalline texture for a durable ceramic structure.
Another advantage is that the wettability of GC Initial Zr-FS affords bonding to the different zirconium frameworks--whether green, sintered or HIP-ed. Even when thicker layers are applied, the sensitive marginal areas still fit well onto the crown coping after firing.
More efficiency and esthetics thanks to low glass content
Not only does the high level of feldspars offer lifelike esthetics in the new zirconium-ceramic, but the three GC Initial Zr-FS Frame modifiers lessen the brightness of the framework material. This reinforces the fluorescent effect of the eventual restoration.
The complementary effect materials and stains in the system can also be used to create individual color nuances quickly and simply.
The simplified handling of GC Initial Zr-FS is equally impressive. Given low firing shrinkage and good stability, the antagonist-friendly material can be built up or modeled simply and conveniently. Because of its low glass content, grinding and polishing poses no problems for dental technicians.
The new feldspar-containing zirconium veneering ceramic GC Initial Zr-FS, which is compatible with the existing GC Initial Zr materials, is now available in a basic set (set includes 16 dentine shades, three frame modifiers and opaque dentines) and a more comprehensive advanced set (set includes INside and shoulder materials).
In addition, there is a special INvivo/INsitu set with various effect materials for internal and external coloring.
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