Multimodal intraoral scanning systems

A multimodal scanning system for scanning an intraoral structure, the system comprising:

• an intraoral scanning wand having a distal end and a proximal end and comprising:
• a probe located at a distal end of the wand,
• a 3D surface scanner configured to project light out of a distal end of the probe and generate 3D surface data of the intraoral structure, and
• an OCT scanning system configured to project light out of the distal end of the probe and generate volumetric scan data;
• and
• a processor and memory comprising instructions that when executed cause the system to perform a method comprising:
• generating 3D surface scan data of an intraoral structure;
• generating volumetric scan data of the intraoral structure with the OCT scanning system;
• determining a location and orientation of the intraoral scanning wand with respect to the intraoral structure based on the 3D surface data of the intraoral structure,
• aligning the volumetric scan data with the 3D surface scan data based on the determined location and orientation;
• generating a three-dimensional volumetric model of a dentition based on the aligned and corrected volumetric scan data and the 3D surface scan data;
• and
• generating a dental treatment plan based on the three-dimensional volumetric model of the dentition.