The software tested were Invesalius, ITK-Snap, 3D Slicer and Seg3D.  Invesalius was the most accurate software for 3D rendering of the dentition with a volumetric bias (Mimics) ranging from 4,59 mm3 to 85,79 mm3; instead, ITK-SNAP showed the higher volumetric bias, ranging from 30,22 mm3 to 319,83 mm3. 
Invesalius
The software tested were Invesalius, ITK-Snap, 3D Slicer and Seg3D.  Invesalius was the most accurate software for 3D rendering of the dentition with a volumetric bias (Mimics) ranging from 4,59 mm3 to 85,79 mm3; instead, ITK-SNAP showed the higher volumetric bias, ranging from 30,22 mm3 to 319,83 mm3. 
ITK-Snap
The software tested were Invesalius, ITK-Snap, 3D Slicer and Seg3D. 
3D Slicer
The software tested were Invesalius, ITK-Snap, 3D Slicer and Seg3D. 
Seg3D
Each tooth model was also manually segmented (Mimics software) and set as the gold standard (GS) reference of the investigation.  Invesalius was the most accurate software for 3D rendering of the dentition with a volumetric bias (Mimics) ranging from 4,59 mm3 to 85,79 mm3; instead, ITK-SNAP showed the higher volumetric bias, ranging from 30,22 mm3 to 319,83 mm3. 
Mimics