Ivoclar Vivadent PS Empress CAD Chairside - Manual (Page 14)

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Intra-oral imaging
To prepare for the optical imaging, OptraGate ® is placed to facilitate access to the
treatment field. OptraGate is a clinical auxiliary device that retracts lips and cheeks
during dental treatment. It enables a full view of the treatment field, facilitates the
accessibility, and improves the moisture control in the oral cavity.
The IPS ® Contrast Spray Chairside is used to achieve optimum recordings for
CAD/CAM restorations. The IPS Contrast Spray Chairside balances out the
different optical properties of the natural tooth (dentin and enamel) and
thus permits optimum impressions using a camera. With the atomizing
nozzle, an optimum covering layer with a detailed representation of the
edges is achieved easily and efficiently with only a short spray discharge.
Angled atomizing heads are available for the spray.
Milling
In order to mill the restoration, IPS Empress CAD Blocks are selected in accordance
with the corresponding clinical situation. The clinical situation not only determines
the selection of the block in the required shade and translucency, but also the size
of the block used. Once the desired block has been selected, it is mounted in the
CAM unit and the restoration is milled.
Several options are available to finish and complete the restorations. Please refer
to the Chapter "Fabrication of IPS Empress CAD Restorations" for detailed
descriptions of the individual working steps of the various processing methods.