Systems and methods for selecting and marking a location on a dental aligner

A system for marking a dental aligner comprising:

• a processing circuit comprising at least one processor and a memory storing instructions that, when executed by the at least one processor, causes the processing circuit to:
• receive a digital model corresponding to a dental aligner, the digital model including a dental arch comprising a plurality of teeth;
• determine whether a section of teeth on a right side or a left side of the dental arch includes flatter occlusal surfaces and select the section with the flatter occlusal surfaces;
• identify flat surfaces on the teeth of the selected section that are flat relative to other surfaces on the teeth of the selected section;
• and
• determine a line of best fit between the flat surfaces;
• and
• a marking system configured to mark the dental aligner with a marking based on the line of best fit.

A memory storing instructions that, when executed by a processor, cause a system to:

• receive a digital model corresponding to a dental aligner, the digital model including a dental arch comprising a plurality of teeth;
• determine whether a section of teeth on a right side or a left side of the dental arch includes flatter occlusal surfaces and select the section with the flatter occlusal surfaces;
• identify surfaces on the teeth of the selected section that are flat relative to other surfaces on the teeth of the selected section;
• determine a line of best fit between the flat surfaces;
• and
• provide the line of best fit to a marking system configured to mark the dental aligner with a marking based on the line of best fit.