I haven't tried it but according to Sirona web site you can export the design in open stl .
" Open interfaces With inLab you keep all your options open.
The inLab software allows you to receive, process and transmit the design data via open interfaces. This offers you maximum flexibility to your changing CAD/CAM requirements.
OPEN inEos Blue
Export of inEos Blue scanning data in the open STL format ready for processing on third-party CAD/CAM systems
OPEN Model
Export of model data processed on the inLab system in the open STL format
OPEN inLab
Export of inLab restoration data in standard STL format for processing in other CAD/CAM systems
OPEN 3Shape *
Import of 3Shape scanning data into the inLab software
Export of inEos Blue scanning data and digital impression data (Sirona Connect) in the 3Shape file format
OPEN GALILEOS Implant
Export of inLab restoration data ready for importing into the
GALILEOS Implant planning software
*OPEN 3Shape is not available in the US."