RAC glaze powders and pastes are compatible with all dental ceramic materials.
The fluorescent version is especially suitable for zirconia and lithium silicate
restorations to provide excellent shade characteristics in all lighting conditions.
Perfect for Zirconia
Reduced Thermal Stress/ Perfect CTE Match
Superior Product to Ensure Enhanced Bonding
Perfect Coverage and Consistency
Outstanding Handling to ensure Smooth Surface Application
Compatible with all Dental Ceramic Materials
One Glaze for Multiple Uses
Ultimate High-Quality Finished Product Quality
20 Stains including A, B, C, D and 5 Gingival Shades
One Product for Multiple Applications
WHY IS THE CTE OF GLAZE IMPORTANT?
The coefficient of thermal expansion of the glazes matches perfectly with the coefficient of thermal expansion of zirconia.
The figure above displays the percentage of linear change of the two materials obtained from a dilatometric measurement during heating from 25ºC to about 500ºC. Dilatometry is a thermo-analytical method for measuring the shrinkage or expansion of materials over a controlled temperature regime. From the results above, the curve of the glaze is slightly under the curve of the zirconia. This means that during the glazing procedure, the zirconia material expands with the increase in temperature and the glaze melts, adhering to the surface of the restoration. During cooling the glaze material follows the same speed of contraction of the zirconia providing a final
glazed restoration free of thermal stress, improving mechanical bonding and eliminating the problem of delamination.
RAC glaze is the ideal material with this tailored CTE for zirconia and lithium silicate restorations.
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