Ivoclar Vivadent IPS Empress CAD Labside - Manual (Page 39)

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Firing of leucite-reinforced glass-ceramic restorations
– Always use the honey-comb firing tray to fire the restorations.
- Support inlays, onlays, and partial crowns with a firing pillow and place them on the honey-comb firing tray.
- Place veneers as well as anterior and posterior crowns on metal pins and position them on the honey-comb firing tray.
- As an alternative to the firing pillow and to better secure the restoration on the metal pins (particularly with veneers), a
small amount of IPS Object Fix may also be used.
- The firing temperatures must be observed at all times. Increasing the firing temperature will result in severe vitrification
between the framework and the veneering ceramic, which may lead to crack formation later on.
- Depending on the working habits, the glaze and stain firing procedures may also be conducted with a temperature
increase rate of 60 °C/108 °F per minute.
- If a vacuum pump is available, the stain and glaze firing procedures may also be carried out with a vacuum in place.
- Restorations supported with a firing pillow on the honey-comb tray are exposed to less heat due to their lower position
in the firing chamber. In order to achieve a true-to-nature gloss nonetheless, it is recommended to extend the holding
time from 1 minute to 2 minutes.
- The firing parameters specified in this Instructions for Use are coordinated with the Ivoclar Vivadent ceramic furnaces
(tolerance range ±10 °C/18°F).
– If furnaces other than those from Ivoclar Vivadent are used, temperature adjustments may be necessary.
Firing parameters
– These firing parameters represent standard values applicable to the ceramic furnaces from Ivoclar Vivadent. The
temperatures indicated also apply to furnaces of older generations, e.g. P20, P90, P95, P80, P100, P200. If one of these
furnaces is used, however, the temperatures may deviate by ± 10°C/18°F, depending on the age and type of the heating
muffle..
– If a non-Ivoclar Vivadent furnace is used, temperature corrections may be necessary.
– Regional differences in the power supply or the operation of several electronic devices by means of the same circuit
may render adjustments of the firing and press temperatures necessary.