Introduction
When using Asiga DentaModel resin, you may notice a thin blue layer forming on the film at the bottom of your tray if the resin has been sitting unused for an extended time. This can seem alarming, but it is a normal occurrence related to the resin’s formulation.
Why the Blue Layer Appears
Asiga DentaModel resin contains pigments and photoinitiators that give the material its characteristic color and enable it to cure under light. When the resin remains undisturbed in a tray, heavier pigments can settle and form a thin film on the tray’s film or membrane. In DentaModel, this sediment often appears as a bluish tint on the film. This is not a leak or contamination—just separated dye resting on the surface.
Impact on Printing
The presence of this blue layer does not mean the tray or resin is damaged. However, pigment separation can lead to slightly inconsistent color or cure if the resin is used without mixing. The resin itself remains usable, and the tray remains functional. The blue film can be gently wiped away if needed, but it does not usually affect print quality once the resin is properly mixed.
What to Do
Mix the Resin: Before printing, always stir or gently swirl the resin in the tray to reincorporate separated pigments. Use a clean, resin-compatible spatula or filter the resin back into its bottle, shake it well, and pour it back into the tray.
Remove or Store Unused Resin: If you do not plan to print for more than a day or two, empty the resin from the tray, filter it, and store it in a sealed container. Long-term exposure to light and air can contribute to pigment separation and polymerization.
Clean the Tray Film: If a visible film remains on the tray’s membrane, carefully wipe it with a lint-free cloth and an appropriate cleaning solution (consult Asiga’s official guidelines). Do not use abrasive materials or harsh solvents that could damage the film.
Avoid Prolonged Idle Time: Resin is best used within a reasonable timeframe. Avoid leaving it in the tray for extended periods, especially in direct light or high temperatures.
Conclusion
The blue layer you may see on the film of an Asiga DentaModel tray after the resin sits idle is simply separated pigment settling on the membrane. It is not a defect and does not indicate a problem with the tray or resin. By mixing the resin before use and following proper storage and cleaning practices, you can continue to achieve reliable prints without worrying about the blue film.