The 3D dental objects are:
Plaster object 
Impression object 
Triple tray impression object 
Appliance: Radiological guide object 
Before acquiring an image, check that you have:
Reset the unit rotative arm to the start position.
Accessed the Acquisition Interface.
For information on accessing the Acquisition Interface, see Accessing the Acquisition Interface.
3D Object Acquisition Interface Overview
Acquiring Images of Plaster Objects
Acquiring Images of Impression Objects