Ivoclar Vivadent Zenostar - Manual (Page 17)

17
Stain infiltration and drying
If Zenostar restorations are infiltrated with colouring liquids such as
Zenostar Color Zr prior to being sintered, they need to dry before they can
undergo further processing. It is essential to observe the following notes
when using colouring liquids
The restoration must be free of all traces of dust and milling residue.
The colouring liquids must not be contaminated.
If cloudy, the colouring liquids must no longer be used. Contaminated
liquids change colour or spoil more quickly.
Do not decant or store colouring liquids in metal containers.
Use a metal-free clean brush to apply Zenostar Color Zr Liquids/colouring
solutions to the restoration.
Before they are sintered, the restorations must be sufficiently dry. If not,
damage to the furnace and/or restoration may ensue.
Restorations may be dried either using an infrared light or a drying cabinet.
The drying time depends on the temperature and the size of the restoration. With lower temperatures, drying takes longer. Large
restorations also take longer to dry.
Drying temperatures higher than 140°C (284°F) may lead to defects. Refer to the table below for recommended drying times.
Drying times for Zenostar in relation to restoration size and drying temperature
Temperature ˜70°C (˜158°F) Temperature ˜140°C (˜284°F)
Single tooth restorationsn ≥15 min. 5-10 min.
Restorations with 2-4 units ≥40 min. ≥25 min.
Restorations with 5 units and more ≥50 min. ≥25 min.
Please refer to pages 29 for detailed instructions regarding the use of the Zenostar Color Zr colouring liquids.