Processing CT scan of dental impression

A digital impression processing system for creating a digital model from a CT scan of a physical dental impression, comprising:

• a processor;
• a computer-readable storage medium comprising instructions executable by the processor to perform steps comprising:
• receiving a volumetric density file of a CT scanned dental impression;
• selecting an iso-value of density for the volumetric density file to provide one or more voxels;
• generating one or more digital surface points in a 3D point cloud for each of one or more voxels;
• selecting a subset of digital surface points from the one or more digital surface points to provide a reduced 3D point cloud;
• selecting a criteria of digital surface optimization on the subset of digital surface points;
• moving one or more digital surface points to satisfy the criteria of optimum digital surface selection;
• and
• generating a digital surface mesh for the reduced 3D point cloud.

A non-transitory computer readable medium storing executable computer program instructions for creating a digital model from a CT scan of a physical dental impression, the computer program instructions comprising instructions for:

• receiving a volumetric density file of a CT scanned dental impression;
• selecting an iso-value of density for the volumetric density file to provide one or more voxels;
• generating one or more digital surface points in a 3D point cloud for each of one or more voxels;
• selecting a subset of digital surface points from the one or more digital surface points to provide a reduced 3D point cloud;
• selecting a criteria of digital surface optimization on the subset of digital surface points;
• moving one or more digital surface points to satisfy the criteria of optimum digital surface selection;
• and
• generating a digital surface mesh for the reduced 3D point cloud.