Regarding Denture Scan Data from SIRONA / Cerec-Systems:
You can directly save as .STL, if you have a dongle from Sirona for this added functionality.
If you do not have the possibility to save as .STL, then please send us the .cdt-file instead. CDT-files can be created with all software versions up to Cerec 3.8. If you have a newer version: save the original .rst-file as .dxd from within your newer version. The .dxd-file then can be imported into Cerec 3.8 (or older). Then from there: "Save as...... .cdt".